u.s. geological - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd...

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DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY Preliminary analytical results and sample locality map for rock samples collected in 1985 and 1986, Port Moller and Stepovak Bay quadrangles, Alaska by 4 Frederic H. wilsonl, Ellen E. ~arrisl, and E.A. ~aile~l Open file Report 87-497 This report is preliminary and has not been reviewed for conformity with U.S. Geolog&cal Survey editorial standards' and stratigraphic nomenclature. 1. 4200 University Dr., Anchorage, Alaska 99508-4667

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Page 1: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000

DEPARTMENT OF THE INTERIOR

U.S. GEOLOGICAL SURVEY

Preliminary ana ly t i ca l r e s u l t s and sample l o c a l i t y map for rock samples c o l l e c t e d i n 1985 and 1986, Port Moller

and Stepovak Bay quadrangles, Alaska

by 4

Frederic H . w i l s o n l , E l l e n E . ~ a r r i s l , and E.A. ~ a i l e ~ l

Open f i l e R e p o r t 87-497

T h i s r e p o r t is p r e l i m i n a r y and has n o t b e e n reviewed for c o n f o r m i t y with U.S. Geolog&cal S u r v e y e d i t o r i a l s tandards' and s t r a t i g r a p h i c

n o m e n c l a t u r e .

1 . 4200 U n i v e r s i t y D r . , Anchorage, Alaska 99508-4667

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C o n t e n t s

I n t r o d u c t i o n . . . . . . . . . . . . . . . . . . . . . . . . p . 1

A n a l y t i c a l m e t h o d s . . . . . . . . . . . . . . . . . . p . 1

Explanation o f r e s u l t s . . . . , . . . . . . . . . p . 2

R e f e r e n c e s c i t e d . . . .................p. 3

ILLUSTRATIONS

Figure 1, I n d e x map s h o w i n g l o c a t i o n o f P o r t Moller, S t e p o v a k ; Bay and Sirneonof I s l a n d q u a d r a n g l e s , Alaska . . . . . . . . . . . . . . . . . . . . . . . . . . p . 5

Plate 1 . Sample l o c a t i o n map, Port M o l l e r , and S t e p o v a k Bay, q u a d r a n g l e s , Alaska

TABLES

T a b l e 1 . Sample c o d i n g u s e d for rock s a m p l e s , , p , 4

Table 2. Lower l i m i t of d e t e r m i n a t i o n f o r re spec t ive e l e m e n t s . . . . . . . . . . . . - . . . . . . . . . . . p . 4

C

APPENDIX

Append ix 1 , A n a l y t i c a l r e s u l t s , r o c k g e o c h e m i s t r y . . ............ a f t e r p . 5

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P r e l i m i n a r y a n a l y t i c a l r e s u l t s and sample locality map f o r r o c k s a m p l e s c o l l e c t e d i n 1985 a n d 1986, P o r t M o l l e r

a n d S t e p o v a k Bay q u a d r a n g l e s , A l a s k a

Frederic H. W i l s o n , E l l e n E. Harr is , a n d E.A. B a i l e y

I n t r o d u c t i o n

T h e a c c o m p a n y i n g map and t a b l e s show s a m p l e l o c a t i o n s a n d l i s t c h e m i c a l a n a l y s e s o f 459 r o c k s a m p l e s t h a t were c o l l e c t e d i n 1985 and 1986 i n c o n j u n c t i o n w i t h g e o l o g i c mapp ing i n t h e P o r t M o l l e r , S t e p o v a k B a y , a n d S imeonof I s l a n d q u a d r a n g l e s . T h i s work was c o n d u c t e d u n d e r the a u s p i c e s o f t h e A l a s k a M i n e r a l R e s o u r c e Assessment P r o g r a m (AMRAP). T h i s r e p o r t is p r e l i m i n a r y a n d i s i n t e n d e d t o make thPs d a t a a v a i l a b l e i n a t i m e l y a n d e x p e d i t i o u s m a n n e r . T h i s r e p o r t is a compan ion t o A n g e l o n i a n d o t h e r s (1985) a n d t o g e t h e r t h e y contain the c o m p l e t e d a t a f r o m a l l s a m p l e s c o l l e c t e d t h r o u g h 1986 f o r t h e P o r t M o l l e r AMRAP,

An a t t e m p t was made t o o b t a i n a d e t a i l e d s a m p l i n g o f a l l r o c k t y p e s , however s a m p l e s c o l l e c t e d f r o m areas o f e x p o s e d r o c k a l t e r a t i o n t e n d t o b e o v e r - r e p r e s e n t e d . T h e s a m p l e s c o l l e c t e d a r e p r i m a r i l y s i n g l e g r a b s a m p l e s t h o u g h a f e w c o m p o s i t e s a m p l e s were c o l l e c t e d . S a m p l e l o c a t i o n s are shown o n P l a t e 1; a s i n 1 9 8 2 t o

w 1984, few s a m p l e s were c o l l e c t e d i n t h e n o r t h w e s t p a r t o f the P o r t M o l l e r q u a d r a n g l e because t h i s l o w l a n d area is m a n t l e d by u n c o n s o l i d a t e d Q u a t e r n a r y d e p o s i t s . No samples were c o l l e c t e d i n t h e area a r o u n d the P a v l o f g r o u p o f v o l c a n o e s .

S a m p l e d a t a i s c o d e d by s a m p l e t y p e a n d s o u r c e , by r o c k t i p e ' % a n d name, t h e o u t c r o p f o r m , a n d t h e 1 : 6 3 , 3 6 0 q u a d r a n g l e f r o m w h i c h

t h e sample wae collected. They are a l s o c o d e d t o i n d i c a t e - w h e t h e r t h e s a m p l e i s n b a c k g r o u n d n o r " m i n e r a l i z e d * , a n d w h e t h e r t h e c o l l e c t i o n is f o r a p r i m a r y , r e s a m p l e , r e p l i c a t e a n a l y s i s , o r i s a c o l l e c t i o n f o r r e a n a l y s i s . ;Sample c o d i n g a s u s e d i n a p p e n d i x 1 I s shown i n t a b l e $1.

,SP ,a * 'W

-Gth" , < &ax.?'&Y*r* S a m p l e s were c o l l e c t e d by t h e f o l l o w i n g i n v e s t i g a t o r s , w i t h

t h e i r r e s p e c t i v e two l e t t e r i d e n t i f y i n g c o d e shown i n p a r e n t h e s e s : L i n d a M. A n g e l o n i ( A I ) , James E. Case ( C E ) , R o b e r t L. D e t t e r m a n ( D T ) , S t e p h a n i e 2 . G a j e w s k i (GS), J o h n W. Miller ( J M ) , F l o r e n c e R . Weber (AWR, W R ) , F r e d e r i c H. W i l s o n (WS), and M. E l i z a b e t h Y o u n t ( Y B ) . T h e s e i d e n t i f y i n g c o d e s a r e u s e d o n P l a t e 1 a n d fn A p p e n d i x 1 1. 4 -

'sz A n a l y t i c a l m e t h o d s

T h e s a m p l e s were a n a l y z e d f o r 31 elements w i t h a DC-arc e m 2 s s i o n s p e c t r o g r a p h u s i n g a s i x - s t e p , s e m i q u a n t i t a t i v e m e t h o d described by G r i m e s a n d M a r a n z i n o (1968). I n a d d i t i o n , a t o m i c

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a b s o r p t i o n s p e c t r o p h o t o m e t r y was u s e d t o d e t e r m i n e a n t i m o n y , a r s e n i c , b i s m u t h , cadmium a n d z i n c . A n a l y s e s f o r b o t h e m i s s i o n s p e c t r o g r a p h a n d a t o m i c a b s o r p t i o n ( A A i n t a b l e 2 a n d a p p e n d i x 1 ) a re i n p a r t s p e r m i l l i o n , e x c e p t f o r F e , Mg, Ca, a n d T i w h i c h a r e r e p o r t e d i n p e r c e n t . No samples had d e t e c t a b l e c o n c e n t r a t i o n s o f e i t h e r g o l d (Au) or t h o r i u m ( T h ) ; t h e s e e l e m e n t s a re n o t shown i n a p p e n d i x 1. A n a l y s t s w e r e : E.A. B a i l e y , J . L . J o n e s , R.M. O ' L e a r y , J . L . Ryder, J . D . Hof fman , B.F. A r b o g a s t , a n d C.D. T a y l o r .

T h e s e m i q u a n t i t a t i v e e m i s s i o n s p e c t r o g r a p h i c a n a l y s e s a r e r e p o r t e d i n s i x s t e p s p e r order o f magnitude. T h e s e s t e p s a re t h e a p p r o x i m a t e m i d p o i n t s o f t h e c l a s s i n t e r v a l s shown be low:

, R e p o r t e d v a l u e 1.0

.& 1.5 2.0 3.0 5"O 7.0

C l a s s i n t e r v a l 0.83 --- 1.2 1 . 2 --- 1.8 1.8 --- 2.6 2 .6 --- 3.8 3.8 --- 5 . 6 5.6 --- 8.3

M a t o o k a a n d Grfaes (1976) evaluated t h e p r e c i s i o n of s e m i q u a n t i t a t i v e e m i s s i o n s p e c t r o g r a p h i c a n a l y s e s ; r e p e a t i b i l i t y bf a d e t e r m i n a t i o n w i t h i n p l u s a n d m i n u s o n e a n d t w o r e p o r t e d values i s a p p r o x i m a t e l y 83 a n d 96 p e r c e n t r e s p e c t i v e l y . Analyses d o n e by AA are n o t r e p o r t e d on a s i x s t e p scale; the quantitative values r e f l ec t b o t h t h e h i g h e r p r e c i s i o n a n d l o w e r d e t e r m i n a t i o n l i m i t s of t h i s m e t h o d .

E x p l a n a t i o n of r e s u l t s

As i n A n g e l o n i a n d o t h e r s ( 1 9 8 5 ) . t h e p r e l i m i n a r y n a t u r e gf t h i s r e p o r t p r e c l u d e s d i s c u s s i o n o f e a c h a n o m a l o u s e a m p l e , o r e v e n a d i s c u s s i o n of how a n o m a l y l e v e l s a r e d e t e r m i n e d . N o n e t h e l e s s , a few areas s a m p l e d i n 1985 a n d 1986 y i e l d e d s a m p l e s t h a t were c l e a r l y a n o m a l o u s i n some e l e m e n t s of economic i n t e r e s t . One o f t h e s e , a n area o f E o c e n e t o O l i g o c e n e s a n d s t o n e a n d s i l t s t o n e c u t by a d i k e swarm, l i e s s o u t h of Mud B a y a n d n o r t h w e s t o f D o r e n o i Bay i n t h e P o r t M o l l e r (PM) C-2 1:63,360 q u a d r a n g l e . T h e s e r o c k s c o n t a i n a number of v e i n s w i t h m a s s i v e g a l e n a . S a m p l e s f r o m t h i s area i n c l u d e 85WS 281-285 a n d t h e s e a re a n o m a l o u s i n Ag, A s , B i , Cd, C u , P b , S b , S n , a n d Zn.

A s e c o n d area o f a n o m a l o u s s a m p l e s a l s o lies i n t h e PM C-2 q u a d r a n g l e . T h e s e s a m p l e s , 85YB 737 a n d 85DT 3 4 6 a n d 3 4 7 , were c o l l e c t e d from a n area of h i g h l y a l t e r e d a n d e s i t e ( ? ) flows west of D o r e n o i Bay. T h e samples a r e f r o m r u b b l e on t h e r i d g e a n d i n c l u d e v e i n ma te r i a l . T h e a n o m a l o u s e l e m e n t s i n c l u d e Ag, A s , Cd , Cu , Mo, P b , S b , S n , a n d Zn ,

E T h e t h i r d a r e a w e h a v e c h o s e n t o h i g h l i g h t i s a b r o a d a r e a of

Zn a n o m a l i e s t h a t c o v e r s much of the c e n t r a l p o r t i o n o f t h e PM C-3 1 : 6 3 , 3 6 0 q u a d r a n g l e . These s a m p l e s a re g e n e r a l l y b l a c k s i l t s t o n e

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or mudstone, yet the anomalous zinc levels are somewhat higher than expected for this rock type. This area lies off the west end of a generally northeast to southwest belt of plutons with associated hydrothermal alteration which includes the Pyramid porphyry copper deposit (Armstrong and others, 1976).

The emphasis given here to these three locations is not meant to imply restriction of anomalous geochemical values to these areas or the three previously mentioned in Angeloni and others (1985). They are noted to guide the reader to locations where rocks containing anomalous concentrations of elements are abundant. More detailed analysis of the sample data with respect to the local geologic relations is required to evaluate the significance of the mineralization at these and other locations.

References cited

Armstrong, R.L'., Harakal, J.E., and Hollister, V.F., 1976, Age determination of late Cenozoic porphyry copper deposits of t h e . North American Cordillera: Institute of Mining and Metallurgical Transactions, Section B, v . 85, p . 2 3 9 - 2 4 4 .

Angeloni, L.M., Wilson, F.H., and Sutley, Steven, 1985, Map and tables showing preliminary rock geochemical data, Port Moller, Stepovak Bay and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Open-file Report 85-470, 179 p., 1 plate, ecale 1:250,000.

.Grimes, D.J., and Maranzin0,A.P.. 1968, Direct-current arc and alternating-current spark emission spectrographic field methods for the semiquantitative analysis of geologic materials: U.S. Geological Survey Circular 591, 6 p .

Matooka, J.M., and Grimes, D.J. , 1976, Analytical precision of 'one- sixth order semiquantitative spectrographic analysis: U.S. Geological Survey Circular 738, 25 p.

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Table 1 Sample coding used for rock samples

Sample t y p e Sample source Rock class A Single (grab) A Outcrop or rubble B Sedimentary B Composite B Mine C Metamorphic

C Dump or prospect D Igneous D Float: E Unconsolidated G Other Y Other

Quad FC3 (Type of collection) FC4 (Class of sample) A to D and A Primary sampling A Background (major) 1 to 6 B Resampling B Background (minor) depending C Replicate sample C Atypical ( v e r y minor) on 1:63,360 D Reanalpis D Atypical (mineralized) sheet. E Other

Form A Bed A B Mass B C Foliated C D Pluton D E Dike or sill E F Extrusive F G Vein G H Fault H I Other I

Rock type Feldspathic sandstone J ~ i t h i c sandstone K Sandstone L Shale or mudstone M Siltstone N Conglomerate 0 Chert P Argillite Q Limestone Z

Basalt Volcanic breccia Andesite i

Tuff Quartz diorite Granodiorite Quartz monzonite Diorite Other

Table 2 Lower limit of determination for respective elements (All anaJyses are by emission spectrography unless otherwise noted; AA indicates

atomic-absorption spectrophotometry)

Element Limit Element Limit Element Limit Element Limit Fe 0.1 Ba 30 La 20 Sn 10

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Semple Lat. tong. Sample number tYPe

Ssmple Rock source class

Quad. FC3 FC4 Form Rock t Y Pe

A A F L A D G Z A D G Z A D I Z A A F L A D I Z A A F L A D G Z A D F L A D F L

A D F L A A D Z A D F Z A C I Z A B E L A A F L A C l Z A B F Z A A F Z A A F Z

A A F Z A D F L A A F L A A F L A A F L A A F L A h F L A A R A , : * I A A A C

A A A E A B A C A A A C A A A C A A A Z A A A D A B A C A B A C A A F L A A F L

A A F L A D G Z A A F L A A F L A A F L h A F L A A A D

A A A Z A A A E A A - , A A

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000000000 00 0 0 000 00000000 0000000000 O d O O 0 0 0 0

U ., ,??,??,??? 8 o o o o o m ? o ??99?9?9° .as.. . . . . o o o o o ~ m y . . . . 00.0. . 000.0 0 0 0 0

m Cr-ddrrcrMrrM 2 . . . Z . . . .

dd HH --- d wd-H- - - - - d m H d r r d - d d ---- - - d m v v v v v v v V V V V V V V V V V V W V V V V v v

a000000000 000 000000 O O O O O O 0 O O O O O O O O O O O Q O 0 0 0 0 0 0 0 0 0 0

m 999990993? 999X999999 90??0??9?0 qoq?qq?o?q q???qooo?F . . . O O ~ O O ~ O ~ O O O O O O O O O O O O 0 & 0 0 6 n m e 0 d O ~ Q O O O O O O O O ~ O ~ O ~ O O O ~ n f i -ono -~n - c d - m - d u ~ m * + m - d - - d n n + w m - n + n o ~ n w c r - ~ m m ~ o ~ a m

r* - V V V V V V V V V cr Vcrrr V c, N

0000000000 O O O Q O O O O O O 0000000000 aou50000000 O ~ O O O Q O O d O H m m w m ~ ~ m m ~ n m m m m m n ~ m y ? n f i n h m m m f i - h k u o ~ n v ~ m n t n m 1-0 m n r - f i - r ~ m n rl r . . . . . . . r . ...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . w 0

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0 000000 000 0 0 O o O 0000 000 O ~ O O O O O O O O 0 O O O O O O O O I( 0 2 .,==?????? 9??=??2?2? ?=????=??? ??0°9????9 . . 9,??999?99

2 O - O O O ~ or-- -- U-I n U-I O Q O O ono g~moooooo- n ~ ~ ~ m o o o o o r* N-0- CY V NYIN- Ndn U-INYICINPI

N c*e-FImCY

0 0 0000 00000 0000000000 0000000000 000000000 c qqSqqqq?XX X8888ooooo . . . . . . . ooooqooooe . . . . oooooooooo . . . . . . . . . . Sqqqqqqaqq . x O O O O O O O O O ~ oooeo0oooo ooooo66ddG o o o ~ o o o o o o o ~ o ~ o O o d o o i

o v t c a o o m 0 m o o ~ o 0 n o o m o o o ~ m o o o o o o ~ o O O O O ~ O O ~ O O o n ~ o ~ ~ o o o ~ cr)dVrClO 2-zg v o n oo -on n m o w o n n o o w o n n a o o o w o o m h h n h n w o

rl NCI CIH MN - C I ~ m m u n ~ m - m - - m + H rr

0000000000 O O O O O O O Q O O 0000000000 0000000000 0000000000

3 ?0999????9 999?9?9??9 999999999? 9999999999 999999999? v 060omooo00 ~ o o o o o ~ o o o O O O O O O O ~ ~ O o o m o m o o o o o omooooooom -e.~mm~omm-w h m m h h m -N- h - ~ r n m ~ m m - w m+ m - o m n n w m v ~ ~ - m m o n m - - - - M d - UCI

O O O O O O O O O ~ O O O O O O O ~ O O O O O O ~ o o o oooooooooo o oooooooa k ?0°9999?49 99??9?9?9, 99?99?2999 9499999999 9,9??99??? u O ~ ~ Q O O O O O O 000000000 oooooo 000 O O O O O Q Q O O O Q O Q O O O O ~ O

O N - N ~ ~ ~ ~ N O N ~ - + r n - ~ d - - ~ - ~ m t n - 2-2 m ~ d ~ n ~ - ~ ~ - m m m H N ~ C Y O O Y I O W I V H Vl V V V V V V V - N d V YIN -

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* 00 O O O O O O O 00000 000 0 Q O O o O o a 0 O O O O O d O O 0 O O O O O O O O O O O 7 993949999? , 49999,993 ?,9999?999 ?9???49?9? 9999??9?00 . . e O n zzwtnnoo o n n m n n n m N N- h m w 4

m n o n m o n o o n o o m o o n o o o o o o o a o m o m r )

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nnanoonooo e d n d n n o o m ~ m 0 0 0 0 0 0 n a o O ~ O O O O O ~ O O o o o n ~ n o o ~ o - w d - ~ h - n n m r ) r - m ~ d d m - + d a N m m ~ w d m n ~ ~ ) - A N ~ N N N N ~ d ~ ~ m d m - w m

V V V V V

0000000 00 000000 000 O O O O O m O O O O O O O O O O O O O O 000e000000 4939999S99 999999.999 8 999999994? 9999944999 ~ ? ? ~ c = ? ? o ~ o * O Q O O O Q O O O O o o o ~ ~ e o o ~ o oooooooooo oooooooooo O O O O O O O ~ O ~ O m ~ o ~ o n O m O O u + n o o m o n ~ o 0000000000 O D ~ O O O ~ O O ~ O F O O O O O ~ O O N H NUNmNHC4 N H m m M d - - c + N N N m m W - N m N m- W - N + - - d N W d N N W - N U

0000000 00 0000000000 O O O O O O O Q O O O O O O O O O O O O 0000000000

0 ???9?9???? 999999499? 999993949? 999999999? 9??99????9 rn ~ m m o o m o o o o ~ m o n o a - 0 0 0 Q O O O O O ~ O O O ~ o n a o e a o a o o n n o o o o m m o m- mf l -mNmm NHN W N -4- m m O n m N - m d m m- m N N H - N m rn - d m - N r l - -

0000000000 0000000000 0000000000 O O O O O O d O O O O O O O O O O O O O

f ~ 0 ~ 0 ~ 0 * 0 ~ 0 0 ~ ~ 0 0 ~ 0 0 O O o a 0 0 ~ 0 ooogoqoqqq q q q q q q q q q o q q o o o q q ~ q q . . . . . . . . . . . * . . . * . -

a ~ a o o o d o o d o o o o o o ~ o o ~ o O O O O ~ ~ O O O O o o o o m o o o n d o ~ o ~ ~ ~ o o o o - N H N m N - m - - - - -O -dm- - - - N - - * * m * 4 0 N a - m - m m w 3 3 - r l - - N - m - N - V v v v - v v - V V V V - V V V V V

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Sample number

51 85CE219 52 8XE220 53 8-221 54 85CEZ22 55 8SCE223 56 85CE22b 57 85CE225 58 85CE226 59 85CE227 60 85x1

61 85DG10B 62 85DG11 63 85DCtlB 64 85DC12 65 85DC13 66 85x14 67 85DGfbB 68 85DG15 69 85DG15B 70 85DG16

71 85DG17 72 85DG18A 73 85DG188 71 85DGiSC 75 85DG19 <

76 85DG2 77 85DG208 78 85DGZOC 79 85DC3 80 85lX4A

81 85DCOB 82 85DG5 83 8 5 W 8b 85DG7 85 85x8 86 85x9 87 85DT299 88 85DT300 89 85DT301 90 85DT302

91 85DT303 92 85DT308 93 85DT309 96 85DT311 95 85DT313 96 85DT314 97 85DT315 98 85DT316 99 85DT317 100 85DT318

kt. kng . Sample type

551630 1605127 A 5517111605031 A 551723 1605030 A SSL738 IW5QX1 A 5 5 1 W 1605008 A 531816 1602730 A 551826 1602725 A 551803 IM2734 A 551853 lm711 A 551600 1- A

553500 1605101 A 553809 1W3#? A 552409 1603902 A 553824 1603721 A 553807 1603713 A 553446 1603452 A 553086 1603452 A 551636 1603701 A 551636 1603701 A 551645 1603701 A

551654 1603704 A 551654 1603629 A 551656 1E43629 A 551654 1603629 A 551647 1603400 A 551514 1603941 A 552457 1601023 A 552457 1601023 A 551550 1603925 A 551549 1603917 A

551549 1603917 A 551544 1603858 A 551538 1603855 A 551530 1603833 A 551546 I603845 A 551602 1603842 A 55x16 1603018 A 555051 1603036 A 555101 1603035 A 555108 1603039 A

555108 1603039 A 555111 1600512 A 555715 1002129 A 552410 160Q102 A 553904 1605535 A 553916 1605541 A 553932 1605531 ' A 553941 1605531 A 553954 1605530 A 5 5 6 W 1605532 A

Sample Rock Quad. FC3 source class

Forla Rock trpe

E J F L F K F K A B F J F J F J F J F , L

4

A E A E A F A c A C

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00000000 O O O O O O O 000 0000 O O O O O oooooo oo oooooooooo yy?9y??m 0 ey????,??: ? ~ ~ ~ , ~ m y q ~ ::?y?O 09 0 0 0 0 " ~ 0 0 " 0 . . . . . . . . . . U * Z . . rn d u - H - - m d m .40-u-- u-- mWM.4 m M - 4 - m d - ~ ~ ~ = = ~ u -WM-d -d .x - - V V V V V + I V V V V V V V V v v V V V V V V V V V

O O O O O 000 0000000000 0000000000 0000000000 0 O 0 O O O O O O O 9??9???939 9943999499 9999499399 9949994999 999999939?

m 0000000000 0000000000 O O O O O 0 O O O O O O O O O O Q O O O 0000000000 ooooooonao o o o o o o o m o o o ~ o o o o o o o m o o ~ o o o o o m ~ O O O O ~ O O O O O - n n o - - ~ r n d w m r n - d r n m ~ m ~ m n a - m n ~ - w m ~ ~ d m n m n m m w ~ - h r ) m * h m n o a

0000 90000 O O O O Q O O O 0 0 0000000000 O O O Q O O O O O Q O a 0 O o O O O O O

m g 9???.9??4? ?3???94?03 0.999499999 999499949? 9????99?99

O O O O ~ O O ~ O O o o ~ o a n o a d n O O O O O O O ~ O O O O O ~ O O O ~ ~ O n ~ o o a ~ ~ o o o ~ ~ N + ~ W H ~ H M m m d d ~ u ~ u m - -+--I-MOO-- - u d u ~ w d d + ~ d n d d m r n o o d o . V V V V V V V V V V V N W V V V V V V m~ u

~ O O 0 O O O O Q O 0 0 ~ 0 0 0 0 4 0 0 O O O 0 O O O O O O 0 0 0 0 O O O O O O O O O O O O O O O O w o w m o o o k - , o o o m ~ o m 0 9 9 e y 9 0 0 ~ 0 0 ~ ~ ~ 0 6 rn . . . . . . . . . . . . . . . . . . . . . . . . . ? ~ ? u l ~ o . ~ ? y ~ O w o O ~ O N ~ I n o . . . . . . . . . . V N d - ~ d A - m w N dm-- - - VlN-mUb-- O m H A m d W N m O O O 0 mr- - YI

NrYN N

000000000 0 0000000000 O O O O O O O O O O O O O Q O O O O O O O O O O C d Q O C Q " ~ ~ ~ ? 0 ~ ~ ~ 0 ~ 0 " 0 ~ C ~ ~ ~ 0 0 O O O O O O O O O O 0000000-0- m 0 0 0 0 m q q o * Y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L u7I-lnnnCUmmmwF7 R O"-l-m"-lNrlVl k-,NNmV,NrlN&nm "hedhnN0 P c h O h r r m m r . -

3

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e . . . . .' Z 0~00000000 0000000000 OOOOOOOOOO OOOOOOOOQO OOOOOOOOOO 0000000000 OOOOO0OOOO 0000000000 0000000000 0000000QaO* O A O O O ~ O ~ ~ O r - ~ m o m m m m g o o n m o a o o m n o n ~ ~ m m m n m w ~ m m o m o m o n ~ o o - d d - - d d m - 4 - 4 H d H - dH-d - H d H " d M d d NMu7 - -N

Page 14: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000

00 QO 00 0000 00 oa 0000 00 00 oo 00 00 00 oooooo oooo 00 00 0000 00

L. 9 9 9 9 9 9 9 3 9 9 90 00 yo0900 . . . . . . . 999499799? 9900999099 . . ???om oa?ye?y

N OOOOOOOOOO 0000000000 000Q000000 OOOOOOOOOO 00000e000O womoonmmn- 0o-w ooow-m n-a-hmo-mw w w - - w ~ w m ~ m N- om 00-I---- e - w - FbN -H- e - -3

00 00000 0 0 0

0 0

C ZEaSPL*~E - -as 0

N O0 q??'??=XxE= ===zZ%=Etfc z = . a S Z X Z Z .as= 00 00000

00000 0 0 0

R:: wm,,, 0 0 0 N N

V V V V V V N

V V

8000008000 ~ o O O O O O O O O 0000000@00 00 0000000 0000000000 * .????? .9?9 ?????????? 999999999? ??8.??????? 999??9°990

n o o n o n o m o ~ moo-noonnn nnonoooonn nnnoomoooo onoon0inoG U ~ W ~ A - M M A ~ ~-m.u-wrn--+ U - - M N - ~ ~ - - , + - - * ~ - n - - w d + ~ w d m d d ~ h

V v v v V

000 OOOOOO OOOOOOOOOO OOOOOOOOOO 00000 0000 O D O O O O O Q ~ O 9 9 9 8 9 ? q q q ? :?qqqqq?qq ??qqeq??e? ?q?qq??q?e q?q?qqq??? OOOQOOOOOO 0000000000 0000000000 0000000000 0000000000

e- n o m ~ o o m o o a 0+hooomnm0 o ~ n o o o o o n o e n o o n + ~ m n n mooma-oomm H d m H - N W N w H N N-NM N N WN-NW-- --*He a NCY-d 4 P I H

0000000000 0000000C00 OOOOOOCOOO 00000~0000 O O O O O S O 0 O O n

4999999999 ?0~0~0~.3?~0~4~ ? ? o . y o . ~ ? ~ ~ y o ~ ~ o ~ o ~ o ~ o ~ ~ ~ o ~ w ~ 0 0 0 000C"C" . . . . . . . . f . ~-~~~~~~~ =~~~~~~~~~ CJ~~~J~~~~~ ~~~~~~~~~~ 2 g~~~~~~~~ V V V V V V V V V V V V V V V V V V V V V V V V

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Sample number

Long. Sample Sample Rock Quad. FC3 FCb Form type source class

Rock t Y Pe

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O O O O O 0 0 0 0000000000 000000000 qqqoo 0 0 0 o o f l o o m o m ~ o qqoqqoaoo O O O O o O O e O 000000000 . . . . . . . . . . . u . E * Z . . . . . Z 2 . 0q?w.qqooq qqq??ooqo . . a a d W e 4 r ) M - U d r)r)--dr)+-dd HNr)-+--u- . . 2

- 4 r ) w d d r ) u - - - d r ) - w H d - V v v v v V V V V V V V V V V V V v V V V V

0000000 00 O O O O O O O 0 0 O 0000000000 O O O O O O O O Q O 0 0 0 0 0 0 0 ~ 0 a

a 9999999899 ??904?9?00 . . . . . 0004999999 E O ~ ? ~ ~ ~ ? ~ ? 9990999999 m 00000000 O O O ~ O O O O O O oooooooooo O ~ O O O O O O O O O D O ~ O O O O O O 000000008Z O O O O O Q O O O O O O O ~ O I C + ~ O N ~ O O O O O O O O O oooooooooo m r - m h m m m n m w ~ m h n n n h ~ w i a - r ) h m r ) n r- m m n m m m n m + ~ m m m m b n m m o - r) el

O O O O O O O O O O O O O O O O 0 0 O O 0000000000 0000000000 0000000000

m 3?4?3??9?9 9999?9?9?? 9999999399 9999499999 999399999? 00000000 0000000000 ~ 0 0 0 0 0 0 0 0 0 a O O O O O O O O O 0000000000 w h n m n w h m Z 2 o h o ~ m m w m n n - o - - m d & m m + N w - m m - w m m m N m w m d w w m - - ,

-r) r) N c-4 V V v V

O O O O O O O 0 * q q q o o o 0 0 2

0

I O O O Q O O (R N N N W m N

0 0

* N N m

- Nr) C) N IC O W d C ? * . .

m m N N N V N C Y N N C Y N N - N ~ ~ o . T ) - N - N N - ~

W O O O O O O O O O O O O O O E O C O O O O O C O O O Q O O O O O O C C O O O O O C 03 000000 M o q 3 m o o o q q q q q q q q o q q q q o o o o o o G o o w 0 0 0 0 0 ~ 0 0 0 ~ qccGqoooG0 P, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k. m m - - m m , u - * m UlUlmvrm-MIntnm wtmmwtmmmUl" lh ".firnU-,vrVtNvrNrn u-lNOu-,U-i~v,~~rn

Page 17: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000

000 000000 000000000 00000 000 2 y?q,o?yy?q 40~0~993900 ? ~ 4 0 0 000 O O O O O 0 0 O O O O Q O 0 O O O

'2 . . . Z . . . r 2 . O9999,9,? 99???99??9 -00 m h - 0 0 0 O o O h 0 0 0 0 m h o b o m h w w

NN - m a m N b H U ~ N N H Fl A- r*-d A ~ Q O O - n m n m o o o o w o ~ o

mVhNCYCUmnCYP)

0 0000 000 0

0 0 0 0

0 ~==sx====Z= zsesxPPz8;a -r z=zx=zq?q? ??e=Zz==X= x=X .= .=ezr: E vl VImVIo 0 l n m - .C

VI m V V V V V ) O V V V V

rl -

0000000000 0000000000 0000000000 0000000000 0000000000

a ? O O O O ~ ? ? ? ~ . . . . qqqqqqqqqq qqqqqqqqqq qqqqqqqqqq qqqqqqqqqq

v 000a000000 0 0 0 0 0 0 m m m ~ n o m 0 0 0 0 0 0 m m o l n 0 0 0 0 m o o O Y 0 0 m 0 0 m m 0 W ~ N V V I ~ - W V I N ~ m ~ h 0 ~ 0 d - m d b mo.-r-oo- m ~ m b m ~ - d n w - I - N - o ~ ~ - - ~ r l H +I d C Y d cY

O O O O O Q O O O O O O Q O O O O O O O O O O O O O O O O 000000000 O G O O O O O Q O O

0 9?9?99???3 3999999499 9??09??99, ,999999999 9 9 9 9 9 9 9 9 9 9 v O O O ~ O Q O O O O 0 0 0 0 0 0 ~ ~ 0 a I - O O ~ Q ~ O O O o ~ o o o ~ ~ t . m ~ m o o m o o a o o

H H M V ~ N W ~ ~ ~ ~ mNlUNN#n- -mV N - a W Nan- w d e ? N N c IC firlMNNCC(N

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0000000000 0000000000 0 0 O 0 0 0 0 0 0 0 0000000000 0000000000

b ???QeC!?F?? 0 90??0005? ?eq??qqq?? ??q?q??qo 0 ? O O Q O ? q q q ? . . . . . . . . . . .

N 0000000000 0000000000 O O 0 O O O O O O O O O O O Q O O O O O 0000000000 O O O Q ~ - I - ~ ~ - O O 0 0 0 ~ h m h o ~ o r - ~ ~ t - - ~ O O ~ O O - u ' h b r - h h - m h nnnont-onoo - r , r * m N N N- r r r r r, w H -rr- N Ncr- u r, d-

O O O O Q O Q O O O O O O O O O O O O O 0000000000 0000000000 0 0 0 0 0 0 0 0 Q O ~ ? ? ? o ? ? ? ? ? ? ~ ~ ? ~ ? ? ~ ~ ~ 9 ? 5 ? 9 ? ? ? 2 ~ ~ ? ~ ? ? ~ ? o ~ ? oooooooooo . . . . . . . . . . O O Q O ~ O O O O O o o o o o o o o ~ o o 0 o ~ o o o o o o o o o o o o o d ~ m ~ a o o o o o o o o

r o m o - o o n n n n o m n o o w o o n n I - o n o o o n m o o O m n n o o n m o w o o o n ~ m n o ~ m ~ - r , N N r , m m R r4umwm--- r, W N N r , - N N w--r lNW -Hr, N m m - M w w N - ~

000 O O Q O O O

993,994999 oooooddodo O O O O v r O O O O O r,r,r,(crlrrNVlr)N

v V

W O O O W O O O O O O O O O t O O O O O t O O O O O O O O 3000000000 O O O O Q O O O O O O O O O Q O O O O O O O O O O G O O O t 5 O O q t O D q q O O O O O O O O O O . . . . . . . . . . . . . . - . . . - . . . . . . . . . . . . . . . 0000099094 . . . . .

a o c m n n a o n o n o ~ o o ~ o o o o s 2 0 3 0 0 0000 - 0 0 n 0 ~ 0 m o ~ 1 o ~ o o o o o o ~ m .--,NFI-"-4-N- mF8rJ--P-,-3-- - - - - " d - m m - - - - - - - - w - r ,cu- . " -w-4- -

V V v v v V V V V V v v

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SampI e number

151 85JH768B 152 8UPI769 153 BUM770 154 85JM771 155 85511772 1% 8UPn72C 157 853M773 158 8WU7738 159 85JM773C 160 8UM774

161 85JH775 162 SUM776 163 85JH777 164 8UM7778 165 8UM778 166 BUM779 167 85JM780 IbR 85JH781 169 85JH7818 170 BUM782

171 85JH782B 172 85JM783 173 855N7838 174 BWH784 175 85JH785 176 8UM786 177 85JM787 178 85JM788 179 85JM788H 180 85JM789

181 85JM790 1 82 8UM79 1 183 85JH792 181 8534793 185 85JM79t 186 85JM795 187 85JM796 188 85JH797 189 85JM798 190 8UH799

I91 R5JM800 192 85JM801 193 R5JMM2 194 A5JM802R I95 85JM803 196 85JMB03B 197 85JH806 198 85JH805 199 RSJMR(16 200 85JM807

Lat. Long. Sample t Y F'e

A A A A A A A A A A

A A A A A A A A A A

Sample Rock Quad. FC3 FCL source clase

A B D - 3 A A A B D - 3 A A A B P 3 A A B D - 3 A A A B EL3 A A A B B - 3 A A A B G 3 A A A D G 3 A A A B G 3 A A A B G 3 A A

A C G 3 A A A C C-3 A A h C G 3 A A A C G 3 A A A D b 3 A A A B b 3 A A A B 3 - 3 A A A F 0 - 3 A A A 8 B 3 A A A B B - 3 A A

Form Rock t?W

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0000000000 0000 0 00 000E)000000 00000 000 000000000 qqqqqoomom oooo o qq m o n o o m o o m o . . . . . . . . . . 0 . . . . . Y 9 9 9 ? , , 9 ? 9 2 0.999900~0. . . a - w - d - - N d d - :ii2==:==-- - - . 4 d - - - w w H - - H & d wm.4 Hd-H+,----

V V V w v v V v V V v V V V V V V

00000 0 0 0000000000 O O O O O O O O O O 0 00000000 0000000000

rn 999498X980 q q q o o o ~ o ~ o . . . . . . . qqqqqqqqqq q X q q q q q q o q qqqqqqoooo . . . .

m O O O O O O O O O ~ o ~ o o o o o o o o O O O ~ O O O O O O O ~ O O O O O O ~ O 0000000000 0 0 0 0 0 m 0 0 0 0 0 0 0 9 W 0 0 - 0 0 ~ 0 0 0 0 0 0 0 0 0 O O h O O O O O O O a O V b O 0 O O w O O w w n - ~ m h n m a - -on N- mm - - ~ N N O O O ~ ~ m u o m m m o m m -- m v l w ~ mm

H rlN r* rl

0000000000 O O O O O O O O O O 0 0 0 0 0 0 0 0 m 0 0 ~ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O 0 0 0 n o O O ~ O 0 ~ O m u i a w . y ~ q ~ ? ~ y ? ? 0 " " 0 0 " " 0 0 ~ N 0 0 d m 0 0 0 ~ 0 O ~ O O m O O a h o . . . . . . . . . . . . . . . I . . . . . . . . . . . . . . . . . . . . . . .

0 VlOcurvrvN cu - - -wms-bab-d - mvl - V ~ m d d - O R rn ~ c m m N N ~ rn -

O O O O O O O O O O 0000000000 0000000300 C O 0 0 0 0 3 0 0 0 O O C O C O O O C O N qqOo~qqOOOO 0 0 0 0 0 0 ~ 0 m 0 O O O O O O O O O G 0 0 0 0 0 0 ~ 0 0 3 w 0 0 q q O o O O G 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L - r - ~ r ~ - ~ m m m ~ m m m m m m m - o - ~ N N O ~ ~ N O - - N m m m m m h m - m ~ m m m m m m m m ~ m

CI

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0000 $00 00 0000000000 0000000 00 0000000 00 000 O O d O O - ??a*: .??,O? ~ ~ - ? = ? ? y ~ y?eo3qo 00 c)?TyyyE,?? y y 3 , ~ ~ Q ~ O sz '2 . . . Z 2 g g Z z - g gg hng~~n~~g-fi I-oo0000 2~ o m 0 0 o o l n 00 horn o o o n m cymcyplnm U ~ ~ ~ ~ N N N M m ~ N.+ ~ N H H -

0 0 0 0 0 80" 0 aE=pL=.eq?qZ= =Prrx====;cz rZEq?%=..x. = = z r % Z ~ l s r = Z Z s c z Z Z % 2 = z x n m m

v v v m n no v v v-

0000000000 0000000000 O Q O O O O O Q O O O O O O O ~ O O O O O O O O O O O O O O

0 ye???????? 999999999? ~ q 9 y ? y ~ ~ o ? ?ca?qy?c??ey o o O ? ~ y ? o ~ y . . . u I - O ~ ~ O O O ~ ~ O ~ ~ ~ O O O O ~ O O I - o o o o o o o v r v ) ~ o r - o m o o l n o m o O ~ O O ~ O O O O O m m r l U r 4 N I n r n O d V N N N - N a n u m + - v , d r ) m d I n l r , m m m

x V m u ff i x m u2 ffi W ( P m O r . r * ~ N ~ ) m o u m \ ~ l c r - w m o w ~ ~ ~ m r ) v m w ~ - m m m 0 - r u m u \ n w + m c r O - w t w r ~ m v m m r - 4 * * -h* - - - t - r - - r - l c * - r - m w m m a c o ~ ~ o ~ m ~ ~ r n r n m c o m o m m m m m m m m oooocooooo a ~ - l c w f - h l c r c r - + - r - f - h p c t . y c l c l c ~ - h t - f - t .b - t .~ l f i r -~ I.I.~-P-P-P-P-I.~-P. ~ ~ m m i ~ ) ~ ~ m m m m r n E zrrZzrrzzr X E ~ X Z Z T X ~ ~ Z E Z Z E Z ~ ~ Z ~ E Z Z X X E X Z ~ ~ TZEEEZZZZE

7-I-47777777 7377777777 3777777773 777-I773717 77-1-I777-I7-I m .~lm.nu)mmmv(nm urrrrmv,m,nmn.n,n m m n c , m m , n m m m m~nlnu-tmmmmmu. m m m m m m m m l n w .

m w & w f f i a m m m c a m m m r n c o m m m a w c o m i c w ~ m w w m m a m ~ m ~ a ~ w c o r n ~ r n m r n ~ ~ w ~ ~ a c c

Page 22: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000

000000 0000 0000000000 0000000000 0000000000 00 00 000000 09390~0,9990. ~O?O?OOO 09 b . . . . . . . 9999999999 y999?099?? ~ ? ? ~ O O O O O O . . . . . . N 000000 0000 0000000000 0000000000 0000000000 00 00 OOOOOO - -oh m w w m h o e ~ o m n m n n o w h o m n m o e o n m mmhonfioooh oo o w 0-00-h

El -CI - - - r r r l - -3 - - Nrld H*C. - C.d

0 0 0 0

9399 ooom tunmrr

Page 23: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000

Sample number

201 85JM808 202 BUM809 203 8SURlOO 206 85K4113 205 85V11116 206 85YR117 207 85WR118 208 85UR119 209 85VR120 ' ' 200 85WR121

201 85VR122 202 85WR123 203 85VR126 204 85WRI 25 205 85VR126 206 85WR127 207 85VRlZB 208 85VR130 209 85K4131 220 851JR132

221 85tlR13h 222 85WR81 223 85WS276 224 85US277 225 8SWS278A 226 85WS278B 227 85US279 228 85WS280h 229 85WS28OB 230 05YS281A

Lat. Long. Sample Sample Rock Quad. trpe source class

Rock tYP'=

A A B G Z A A Y C - 2 B A B G 2 A A D C-2 A A B C - 2 A A B C 2 B A D C - 2 A A B G Z A A B C - 2 A D D G Z

A D D G 2 A D D G Z A D C G Z A D C G Z

% A A B D-2 A D B - 2 A A D 8-2 A A D B - 2 A A D B . 2 A A Y B - 2

Page 24: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000

0 000000 0 O O O O O O O O O O O O O O O O O O O O O O O O O O O O O 000000 00

??99?O 993199999? 993999999? ,???999??9 ?99'?99,,99 01 .Z * Z . a H rnHM.4,- ,+uu-d,-m, -.".,w,, ,,,, d,,,, ,,,, ,,,,-d H- V V V V V V V V V V V V V V V V V V V

O Q O O O O O O O O O O O O O O O 0000000000 m . . . . 4????????? ? ~ o o ? ? ~ ~ o o . . . . m O O O O O O O O O 0000000000 0000000000 0000000000 0000000000 00e0ao00hg 0000000000 0 0 o o O o o ~ o o m m o o o o o o o o o o o o o o o a m o

w m n n - ~ n n rn m r - o m m n m n m m - m m m o o m m ~ m r o o o ~ m - m o o o h n n n n n - d

0000000000 O O O O Q ~ O O O O O O O O O O O O C O O N O O O O O O O O O O O G O O O O O O w 0 0 0 m m O O m m O 1-000-0-000 O n ~ O m O o O o n 0 0 ~ 0 0 0 0 0 ~ m m O m m o 0 0 o m n m . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x W N N M -3 -- -N- m e4-m ---m-mNNm- r4 N N - N m d - t 4 4 d W N m -

0000000000 0000000000 O O Q O O O O O O O 0000000000 O O O O O O O O C O H 3 0 0 0 O O ~ O W O O q O O O * ? O O q q O O O O O O O G O O O O O O O O O O Q O OqOOOqC?qWm*. U . . . . . . . . . . . . . . . . . . . . * . . . . . . . . . . . . . . . . . . b m m m m - m n - m m m n e n - o - n n m n m n m o o m - o n r - m m m m o h e m m m m m ~ m m i - - m -

d- - -

Page 25: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000

O O O O O O O O O O O O O O O O O O O O 0000000000 0 O O O 0 O O d O O O O O O O O O O O O

c 999999909? 9999009999 999599999? yy??900?9q . . 9399999999 ar 000000 d o e O O O O ~ ~ O O O O o o o o o o o ~ o o o o o o o o o o o o ~ 3 0 0 0 0 0 0 0 0 0 ~ P g g g g 8 z E 8 g PgP88gOg8P 0000000000 0 0 0 0 0 W 0 0 0 0 0000000000

- N - N m ( ? N -d 44 -" ~ = " ~ ~ ~ " " g ~ ~ g ~ = ~ g ~ ~ = ~ " g " ~ ~ " 2 g " " '

n n

Page 26: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000

0000000000 G O O O O O O O O d 0000000000 O 00000000 O O O O G O O O O 0 ~ ~ 0 0 0 0 0 0 0 ~ ~ qqqqqooooq qqqqqqqqqq 0 0.qooqqqq ~ q q o ~ q o ~ o o o o

L. . . . . . . . . . . . Z - . . . . . N 0000000000 0000000000 0000000000 0 O O O O O O O O 0000000000

~ m m m m n o o n o ~ O ~ O O ~ O O O I - O O O O O ~ ~ O ~ ~ O O a ~ ~ O I - O I - O O v ~ f i ~ m h b m a n ~ n CI - -HN m - - m 3 ~ e - - - w - w M -- - -3 4 - N m u-

* O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O 0 00000000 0000000000 < ???0?99?99 ~ ? ~ ~ ? c J ~ ? Q ~ 9999399999 ~ , ? C J $ ? O ? ? O oqy??ooG39?

I . . . . E m m o ~ o o o u ~ o u ~ ooaooootnno O O ~ O O O O W O O o o o o o o m m o m o u i n o o m m 0 0 N w t - h o m m - w m o m 0 0 d t 4 w t n d n 4 e w r n h ~ d m n o e w a o n ~ ~ r n r n m w ~ o s n m m m s m n n

d 4 N 3-H- 3 m- 3- N N - N

0 0 0 00 00 000 00000 0 8 00 0 09990 0 o 0 00

e =?Z?==?=?? zz??=999zz = = = a . *= - * - * 9 ? ~ = - 2 ===a?=??== N 0 0 0 0 0 00 000 00000 0 0 00 0

00000 0 0 00 0 0 06

0 00 2 s N N I Y 00 000 NN NNN NCYWIYCY (Y N CIIN N

0 00 N NN

V V V V V V V V V V V v v V V V V V V I I

oooooooooo ~ o o o o o o o a o o o ~ o o 0 0 ~ 0 0 o O O Q O O O O O o o o ~ o o o o o o * 999999999? 9??99?9??? 999994999? 499993999? ???99??49° .O

O ~ O O O O ~ O O O ~ o o o ~ t n o o o o o o o o o o ~ u - ~ o n oo00ooooom o o o ~ n o ~ o o ~ o e J - m N u m m w I Y N .-lNNHNMnNNN N N I Y m h m N d m d n - m - I Y m N m m d N P 4 N m H m N N d d O

v V V ' .

C 0000000 0000000000 Q Q O O O O O O O O 0 O O O O O O O Q O O O O O O O O O O N ooe99998XX . . ? ? ? ? o ? ? y q ~ 9999999999 o 99999939 o o ~ ~ ? o o ? p ~ .

as . . . . 0000000000 0000000000 0000000000 0 O O O O Q O O O O 0 0 0 0 ~ 0 Q O O O

P m o m o n 0 0 0 0 0 m 0 0 0 0 n O n o m o 0 o o m 0 0 O o O g ~~~~~g~~ t 3 ~ g ~ ~ g g ~ ~ ~ g M A M N - m - N N m N m N a - 3 H w w . H - - N d m N N N 4

0, 0000000000 0000000000 0000000000 0 00000000 0000000000

h ? o ? ~ ~ ~ o ? ? ~ 9 ? ~ 9 ~ ? 0 ? ~ ~ o o ? ~ q ~ ? 9 q ~ o ?0999??9 9 9 9 9 9 0 0 9 9 9 ~ . . ' 2 . . .

m aooaooooom oooooooooo oooooooooo 0 o o o o o o o a O O O O O O O O O O ~ 0000000000 m 0 0 0 0 0 0 Q 0 0 O O O O O O O O O O O 00000000 00Q00000Vl0N u ~ m m h ~ t n - m m m - - o d m n m a n m n m w m m - w m t n v t n m m n m c m n m m w m m m o m m - n

V v - v

000000 O C O O 0 0 0 0 Q O 0 3 0 0

G O O 0 0 0

* * ' Z ' L X Z Z z z N U U

0 - o o o ~ o o o d u-l O a O l n N m m r r

O N C v

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Sample Let. Long. Sample number type

Sample Rock Quad. FC3 source class

Rock t J P @

2 J K M n Z M n 2 2

Z 2 1 2 J z 1 .I e N

P z E E E 1 B J B z 1 J 1 1 K 1 C Ii J It

2 2 M 1 K K t D 1 A

A Y A-2 A A Y A-2 A A D B - 2 A Y 8 - 2 A A D B Z A A D B - 3 A h D B 3 A A D B-3 A A B G 3 A A D M A

Page 28: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000

o 0 0 0 o o a a oooooao oo oaa o 0 0 0 0 0 0 mmun 0 0 O m o ? ? 000000 0 a 9=919~??"" . . 99??'?3'?z99 zziidat===. =zizz

M - H - m + d H - - m w d - d - - -- - z z z ??????=? - . 4 d w d - d

v V v v v v v v V V V v v v w v

0 0 0 ~ 0 0 0 0 b 3 0 O O O O O O O O O O C O O O O O O O O O d 0 0 0 e I O O C C O O O O O O G O C O O W Y q u n m O O - m - N 0 - 0 0 n O Q 0 0 0 0 0 m n n 0 0 0 0 0 ~ q o o O q ~ - ~ c o 0 0 0 0 ~ ~ ~ v l o m 00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

X ovld - M 4 - - 4 W N 0 - N C U N - - - N N N e I N f i r 4 C . I - N N N 1?F1-- N--N

Page 29: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000

000 o w 0 o o o o o o O O P o o o o o o o o o o 000 0 0 a o o c o ~ o o 0 3 0 g ?9?, ,9??, , q q q o o o . . . z c o o . . . o o o o o o o o o o . . . . . . . . . . ?0,0,,,0.0 . Z 00 . . ~ ~ ? 0 0 0 000. * . . Z . . z - zmrc ~ O I - ~ O O 0 0 0 O O O ~ O O ~ O O - G O - m m 00 o ~ a m a o 00- - -N- m m ~ ~ m m m m m m ~ m m V - 0 0 O W - V - N m~ - -- -

O O O O o O O O Q O 0000000000 O O O O O O O O O Q O O O O O O O O O O O O o O a O O O O O

c 999999999? 00?000?9?9 . . . . . q?q????qqq ??ooo??qqq . . . q?q?oqq?oe r 0 0 o a o 0 0 0 ~ o O O O ~ O O O O O O oooooooooo O Q O O O O O O O O ooa0d0oado.

O O Q ~ O ~ O O O O o o o m ~ o o o m o 0 0 0 0 0 o o ~ o ~ 0 0 0 - ~ O O O O O O O ~ O O O O O O O m m m - a c o r n - o m h m u o m o m m o o o t n m n t n ~ m t n m a - m o w m m o n m m m q o - g o o * 3- d -a N d - -34- N NVI - N d - M - m e .m - d W H-4-d- m rn

0000000000 0000000000 0000000000 0000000000 0 0 O 0 Q 0 0 0 0 0 0000000000

a . . . . . . . . . . 999590?9~?9 999999939? C ~ ~ ~ ~ ? ~ O O O O . . . . ?qqqqo.q?q? U O O O ~ O O O D ~ ~ O O ~ O O O O C O O O O O O O O O O Q O 0 0 0 0 0 0 0 m 0 0 0 0 l . 0 o o m 0 0 I - ~ O m v - m W - v t n m - m h - m C m O O m - r - b & 0 0 0 h O O m O m m h v m O m m - -o n o

4- 3 (rl C I - - - N - - - C I C - N

000 O W 0 0 000000 000 0000000000 O O O O O 0 0 0 0 0 0 0 0 0 0 0

999,9?99,, 0 000 0000

9 9 9 9 9 9 , 9 9 9 999999999? 9 9 ? 9 ? , 3 , 9 9 999,?9,9?9 - N r 4 d m - - 0 0 0 0 0 m 00- O O O O O O O O O O 0 0 0 0 0 0 0 0 0 0 2 32 000

crmCy3f i - v

234 m 0 m I n m v l 0 0 0 m NvlrnFIN m V N -d r * -d - - 22 "0 0 - P

V l m v - -

Page 30: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000
Page 31: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000

Sample number

301 85YR705C 302 85YB706 303 8SYB707B 304 85YB708 305 85'38710 306 85YB710B 307 85YB711 UIB 85YB712 309 8SY0713 310 B5YB7lS ! 1 311 85YB716 312 85Y8717 313 85YB718 314 85YB719A 315 8SYB719B 316 8SY8719C 317 BSYB720 318 BSYR721 319 8518722 320 85YB723

321 85YB724 322 85YB725A 323 8518725B 326 8518726 325 85YB727

Lat . Long. Sample type

Sample Rock source class

Quad, FC3 FCI

G2 A C D-2 A A b 2 A B D-1 A A D-I A B D-1 A B D-2 A A D-1 A C D-1 A A B-1 A A

Page 32: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000

0000000 0 0 O O O O O O 00 000 0 0 0 0 000000 0 o o o o ooooo U . .

d--HHdH d m - m U W H d C + 4 H U - d M - 4 U M C I m H H d - H m W d -4-4-

V V V V V V Y V v V V V V V w V V V v

0000000000 0000000000 0000000000 000000 000 000000000

9399999999 0099993?99 999999900? 090 . . . . . . 8ooo939999 rn . . . . .= m 00000000 0 0000000000 0000000000 000000 000 0000000D00

o o o o o o 0 v r 8 0 o o o o m o n o o o o o o o ~ o o o o o o m o o o o m o o o o m o o o o o o o d m n n o m n w n m n n m h r - d u - i o - m m h ~ o n ~ o m n W M - N O W m m nh m - o o m w -

N u YI CY YI -d n A

v r o o o o v r o d d o r r r lmr*Hr le l r l ( r ld

V V v v V

0 vr 5: 00 g

Ovl 00 2 Z r s 6 Z % Z ~ ~ p P;E& .E%%IXZ Z r r Z X Z Z .ZZ f C Z r 2 . Z Z *az ZZZZZZZEfC2Z 4 0 V

V o v v 0 N

W 0 0 0 0 0 0 0 0 0 0 0 0 0 V b m O Q 0 0 O O O O O O O O O O 0000-00000 n d - - m m c n m d n n ~ n n o o + f i m n ~ m l n v ~ n ~ ~ n - h v l m n m w o n o a m m . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . l- 0 - -

0000000000 O O O O O O O O O O O O O O O O O N N O O C O D N O N O O Q 00 00 000030 w D ~ O O W O O O ~ O a o o t - o n 0 0 m - m O O q q n ? q q q O O O o O o o o O o m o o o o o v r o m c m . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . r O d m r l N-rn N NNN N N N d 3 3 - N - N V - WN-NVp-jVm-m d N -7 d N - m d r i

Page 33: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000

O Q O O O O O O O O 0000000000 Q O O O O O ~ Q P O o o o e ~ o o o e o e ~ o o o o o o 0 o??oe????q ???o???o?o ~ o o o o o o ? ? ? qqqoqoqqqq 8 q q q q q q o q o E . . . . . . . . . .,

E O O O ~ O O O O O O ~ a o d o o o d o d oooooooooo o o o ~ o o o o o o ~ O O O O O O O O O 0000000000 O O O O O Q O O O O 0 0 0 0 o O 0 - N O 0 0 0 0 0 0 n 0 m 0 0a00000000 ; O O ~ O O ~ ~ ~ O O o m u ~ ~ o o o o ~ o m o o o ~ n o o ~n z = * z ~ z z - g ~ ~ ~ r - ~ o a - ~ n o N N W N ~ - W - M W d - w ~ n n m in n H

. A - N

O O O O O O O O O O 0000000000 O O O O O O O O O O O O O O O O O O O O d 0 O O O O O C O O

2 ?=????????? 933999999? ?99?999??9 9?9?999??9 ??9??99?99 U O O O O O O O O O O 0 0 0 0 m 0 a 0 0 0 I n O O O O O O O O O O O O O O O O O O O O O O O O O O O O O

mrnrnNmb9-0 -m m N N c l - - o m - N @ r n O O u m h N r n d - m 0 - 0 0 4 N N O O m w N m O N m N N CI -1 N"4 - Y)" d - ..*+.. CI

d ,C+,"

C 0000000000 O O O a 0 o O C O O 0 O O O O C O 0 0000 O 0 0 O O O O O O O O O O

0 ~ ? q c * q o . ~ ~ y q ?O.O~O o*o.o.~o.o 0~0~90~990 . z z q qqqo o o o qqqooooooo

' 2 .z .% - . . . . . . . u 3000000000 O O O C ~ ~ O O O O m m t n c a a o o 0 0 3 0 o g 2 o o ~ o o o o ~ o o h m h h l - m N b e m N N W m V V m h N - - d C I h N ~ n m Fl - O N - In - r l - x f l l nN*Nr l

4 = a 0 E l 0 u --- rJ"

C o c o c o o 00 N - - N --- NN

0 F1 Q 0 m 0 - C

I . * Z . - ~ z r a : x z a . X L - * X L x r x z z z z z z z z 1 : z z . P O U

- *

Page 34: U.S. GEOLOGICAL - pubs.dggsalaskagov.uspubs.dggsalaskagov.us/webpubs/usgs/of/text/of87-0497.pdfd wd-H---- -dmHdrrd-dd ---- --dm vvvvvvv VV VV VVV V VV V WV VV V v v a000000000 000

0000000000 0000000000 0000000000 0000 00000 0000000000 9499999999 ~ q ~ 0 0 0 0 0 0 0 qqqqqqqqqq qqqqzqqqq0 0000000000 I" . . . . . . . . . . . . . . . . . . N 00000 0000 0000000000 0000000000 0000 00000 OOO O O O O O O O

~ ~ ~ ~ ~ g = n - n nnno-nnnon rrrnoor-no* -01-0 nooon oonnoooono

rl -- N- -N- - - - w * - M d H d - - M - - -

4 OOO0OOogOO 0000000000 00000000 0 000000 000 OO0O O O O O O O * q?????? .?? ~???9~0000 qqqoqqqo q qqqqqq,qqq q q q q q q o o o o I . . . . ' Z . . . . a oonnnqnnon nonoonomon noooooon 0 nnnooo aoo o o m m m m o a o o N m m n ~ ~ - ~ r - e * m h m ~ - m m - n n ~ - h d m h m m - v o N - C Y ~ O ~ m m w ~ ~ ~ - ~ ~ Q o w . +

W --d * H - -0 4 U - N A

00 o o o 000 000 o o 0 0 0

0 0 0 0 00000000 00000000 c . r ; ? ? ~ ~ ; = r c . r . . a=a9xr???= ?94z9==za. ===4?9=?%9 = z . . . . . . . .

N 00 0 0 0 000 000 0 0 000 0 0 0

00000000 0 000 000 0 N NCYN EINN (Y N

00000000 v v v v v v v v v v v v v v m v v v v v v C Y W F P e Y N N C Y N

0000000 800 OOOOOO0OOO OOOOOOOOOO 0000000000 0000000000 9994a.99.99 4499999999 ?99??9???9 ?9?9??9??? ?99??99?00 . . 0000000000 0000000000 0000000000 000e000000 0e00o00000

P 0000nOnOnn oonnnn0000 aOnom0nnoO n n 0 0 n 0 ~ 0 0 e n0n000aooo m w m - N n -EIm N m m m - w - N m N ~ w N m

OOOOOOOO00 0000000000 0000000000 000000 000 0000000000 I" ????~?0:?? 9?999?0000 . . . . ??q??qqq?q qqq??q,qqq q q q q q q q q q q rn ooooo ~ O O O O O O O ~ O O O O O ooooooo0oo oooooo ooo O ~ O O O O O O ~ ~

OQOO 0000000000 0000000000 000000 000 0000000000 nxnxnf,,,, H,n-,nmm~n NNmo,nn,om n,n,oo ,,, ,m++,N,,,EI- v v V u d d.4 V

0000000000 0000006000 0000000000 O O O O O Q 000 O O O O 00000

P. O Q O O S O E O O O SOOOOrn&OOO 00~0Ofiu100 0 O Q O O t O X O 0 0 u? 0 0 0 ~ 0 ~ 0 0 0 .----N-w-mN H--N-- - -N- --m-,-.--m-4 ----a- m m - - --- .-,dm-- V V V V V V V v V V V V V E I V V V V

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Sample number

Lat. Long. Sample Sample Rock type source class

55LIb7 16Q17M A A B 5521581611910 1 A D 552312 1611940 A A B 554112 1603020 A A B 5W49 1603034 A A B 554250 1603405 1 A D 554113 1603236 A A 3 554143 1603236 1 A D 551017 1603701 A A B 5539301603851 A A B

553908 1603908 A A 8 5540021603921 A A B 55hO10 1W3935 A A B 554710 1603301 A A D 555512 1592010 A A B 555528 1592040 A A B 555648 1591820 A A B 555639 1591833 A A 8 555630 1591847 A A B 555240 1595830 A A D

555245 1595839 A A B 555b051594I52 A A D 551106 1602935 A A B 551116 1602935 A A D 553957 1603238 A A D 553951 1603640 A A D 556120 16U3910 A A B 554706 1603225 A A B 554744 1603352 A A B 554813 1M3625 A A B

551355 1601558 A A B ~ 5 5 6 ~ 0 i ~ 9 m 5 A A B 555650 1592005 A A D 555630 1592005 A A B 555213 1603308 A A B 553948 1605510 A A B 555240 1595718 A A B 551719 1603541 A A B 555738 I600247 A A D 555738 1600247 A A 0

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