l eg nd · 2019. 10. 30. · 2016: geology of th etomy' sa rriv – l np d a(p f n s1 2h /08 e...
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!G
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SouthBrook
T om m y'sArm River
RockyPon d
MooseBrook
Kn ifePon d
L oonPon d South
L oon Pon d
L oon Pon dWest
RustPon d
O'Brien 'sShowin g
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Barne ysHill
G re e nP oint
HallHill
JohnsonLookout
Rowse llHill
S ugarloafHill
W e st P ond Hill
W olf He ad
South Brook
AnthonyPond
BolognaPond
CampPond
ClearysPond
DeerPond
ExtremityPond
FourthPond
FoxPond
GhostPond
Gumm
y Broo
k
GummyPond
IslandPond
LittleSandyPond
MuskratSteady
RockyPond
SandyPond
SidePond
SkiPond
South Brook
SouthWest Pond
SpotPond
TroutPond
SouthBroo k
Aspen Brook
Barne
ysBro
ok
Burnt BerryPond
Loon Brook
Loon
Pond
Moose
Brook
MoosePond
RiverheadBrook
Salmon Brook
SaundersPond
South
Pond
SpringCove
UndergroundBrook
Upper BurntBerry Pond
West
Brook
West
Pond
Wolf Cove
Eaton Point
Saunde
rs
B
rook
West Bottom
Halls
Bay
Tommy's
A
rm
River
Arm
River
Tommy's
C:LuC:Lu?
e O :FLd
e O :FLd
e O :FLg
e O :FLg
e O :FLgd
e O :FLgd
e O :FLgd
e O :HHg
e O :HHg
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e O :HMg
e O :HMge O :HMg
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e O :HMg
O :RCb
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e O :Rgb1
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e O :Rphw
e O :Rphw
e O :Rspr
e O :Rwbu
e O :Rwb1
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e O :Rwb3
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e O :Rwb3
e O :Rwb3
lO -e S :S Hm
lO :S Ag
lO :S Ag
lO :S Ag
lO :S Ag
mO :BHHCs
mO :BHHCs
m O :BHHCv
m O :BP hs
mO :BP pg
m O :CBv1mO :CBv2
mO :CCRs
m O :CCRs
mO :CCRs
mO :CCRs
mO :CCRs
mO :CCRs
mO :CCRs
m O :CCRs
mO :CCRs
mO :CCRsm O :CCRs
mO :CCRs
m O :CCv1
m O :CCv1
mO :CCv2
mO :CCv2
mO :CCv2
mO :CCv2
mO :CCv2
mO :CCv2
mO :G Bg
m O :G Bg
mO :G Bg
mO :G Bg
m O :G Bg
m O :G Bg
m O :G Bg
mO :G Bg
mO :Rgi
m O :Rgi
mO :Rgi
m O :Rgi
m O :Rgi
m O :W P mm O :W P u
m O :W P u
S :HIrpdr
S :HIrpg
S :HIrpgS :S S
S :S S
e O :HHg
S :S S
e O :HHg
e O :HHg
m O :W P u
m O :W P u
m O :Rgi
m O :Rgi
S :S V m1
e O :Rwb2 mO :CCRs mO :Rgi
m O :BP s
mO :BP s
mO :BP s
lO -e S :S Hm
mO :W P u
mO :W P u
mO :BHHCs
m O :W P m
m O :W P m
mO :W P u
m O :CCRs
e O :Rdb3
e O :Rdb2
e O :Rdb2
e O :HMg
e O :HMg
e O :HMg
e O :HHs
e O :HHge O :HHg
m O :CCv1
mO :CCv1
e O :HHg
e O :FLg
e O :Rdb3
e O :Rdb3mO :CCv1
mO :CCv1
mO :CCv2
mO :CCv2
mO :CCv1
mO :CCRs
m O :CCv1
mO :CCv1
lO -e S :S Hm
e O :Rwb2
e O :Rdb3
e O :Rwb1
e O :FLg e O :Rdb2e O :Rdb2e O :Rdb2
e O :Rdb2
e O :Rdb2
e O :Rwb1
e O :Rdb3
e O :FLgd
e O :Rdb3
e O :Rdb2
mO :BHHCv
lO -e S :S Hmm O :CCRs
mO :CCRs
mO :CCv1
mO :CCv2
49o19' N 49o19' N
49o27' N 49o27' N
56o23' W 55o56' W
56o23' W 55o55' W
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0 2 4 6km
MAP 2016-01O P EN FILE N FLD/3268
GEOL OGY OF T HE T OMMY 'S ARM RIV ER – L OON POND AREA(PART S OF NT S 12H/08 AND NT S 02E/05), CENT RAL NEWFOU NDL AND;ROBERT 'S ARM V OL CANIC BEL T AND ADJACENT ROCKS: MAP 1 OF 3
S cale 1:25 000
NEWFOUNDLAND
12G
1K1L11I
1N1M11P11O
12B 12A 2D 2C
2F2E12H
12I 2L
2M12P
47o
48o
49o
50o
58o 56o 54o
51o
54o56o58o
51o
47o
48o
49o
50o
0 150Kilom e tre s
INDEX MAP
G e ology by B.H. O 'Brie n, P.G e o.P re lim inary G IS /digital cartography by M. Clarke (2013) and P. De sve aux (2014).Final G IS /digital cartography by N .A. S taple ton.G e ological fie ld assistance by C. P e nne ll (2002, 2003), B. S parrow (2005) and J. S quire s (2006).Lithoge oche mical support studie s by K. S arioglu (2007) and D. W alsh (2008).Base map in digital format publishe d at G e om atics Canada, Earth S cie nce s S e ctor, N atural Re source sCanada, O ttaw a.Ele vations in m e tre s above m e an se a le ve l. Contour Inte rval for N T S 12H/08 is 10 m e tre s. Contour Inte rvalfor N T S 02E/05 is 15 m e tre s.U nive rsal T ransve rse Me rcator proje ction (U T M) Zone 21.N orth Am e rican Datum (N AD) 1927.Approximate magne tic de clination (2015) at ce ntre of map 19o33' w e st, changing by 0o11' e ast pe r ye ar.O pe n File N FLD/3268Copie s of this map may be obtaine d from the G e oscie nce P ublication and Information S e ction, G e ologicalS urve y, De partm e nt of N atural Re source s, G ove rnm e nt of N e w foundland and Labrador, P.O . Box 8700, S t.John's, N L, Canada A1B 4J6 [[email protected]].De partm e ntal w e bsite : http://www.nr.gov.nl.ca/nr/G e ological S urve y w e bsite : http://www.nr.gov.nl.ca/nr/mine s/ge oscie nce /re ports_mapsT his map is subje ct to re vision and modification. S ymbols for be dding and se le cte d minor structure s are notplotte d dire ctly at the e xposure location.P ublishe d 2016.Recom m en ded CitationO 'Brie n, B.H.2016: G e ology of the Tommy's Arm Rive r – Loon P ond are a (parts of N T S 12H/08 and N T S 02E/05), ce ntralN e w foundland; Robe rt's Arm V olcanic Be lt and Adjace nt Rocks: Map 1 of 3. S cale 1:25 000. G ove rnm e nt ofN e w foundland and Labrador, De partm e nt of N atural Re source s, G e ological S urve y, Map 2016-01, O pe n FileN FLD/3268.Accompanying ge ological note s, re fe re nce list, and the comple te le ge nd of the map units comprising theRobe rt's Arm volcanic be lt and adjace nt rocks are available with this ope n file map.NoteO pe n File re ports and maps issue d by the G e ological S urve y Division of the N e w foundland and LabradorDe partm e nt of N atural Re source s are made available for public use without be ing formally e dite d or pe e rre vie w e d. T he y are base d upon pre liminary data and e valuation.T he purchase r agre e s not to provide a digital re production or copy of this product to a third party. De rivativeproducts should acknowle dge the source of the data.Disclaim erT he G e ological S urve y, a division of the De partm e nt of N atural Re source s (the “authors and publishe rs"),re tain the sole right to the original data and information found in any product produce d. T he authors andpublishe rs assum e no le gal liability or re sponsibility for any alte rations, change s or misre pre se ntations madeby third partie s with re spe ct to the se products or the original data. Furthe rmore , the G e ological S urve yassum e s no liability with re spe ct to digital re productions or copie s of original products or for de rivativeproducts made by third partie s. P le ase consult with the G e ological S urve y in orde r to e nsure originality andcorre ctne ss of data and/or products.
56°0'
56°0'
56°5'
56°5'
56°10'
56°10'
56°15'
56°15'
56°20'
56°20'
49°25' 49°25'
49°20' 49°20'
49°15' 49°15'
49°10' 49°10'
49°5' 49°5'
Map 1 of 3
REGIONALGEOL OGY
T his inse t displays re gionalge ological patte rns andre lative position of maps inthis O pe n File se rie s. S e eindividual maps for le ge nd.0 5
km
L EGENDAn e xte nde d le ge nd de scribing the characte ristics of e ach of the map units is available with this ope n file map; the O pe n File num be r is the sam e .
m O:GB Arc-related m afic sill com plex (youn ger WildBight sequen ce)G um my W ate rs intrusive suite
L ate Middle OrdovicianCatam aran Brook structural tract (CBT )m O:CB Joes L ake division
L ate Middle Ordovician ?Burn t Pon d structural tract (BPT )Sops Head Com plex (in part)m O:BHHC Burton s Harb our – Herrin g Cove division
Middle Ordovician ?Burn t Pon d structural tract (BPT )m O:BP Julies Harb our division
RO CKS FO RMED IN T HE IAP ET U SO CEANStratified rock un its from the ExploitsSub zon e of the Dun n age Z on eREG IO N ALLY METAMO RP HO S ED RO CKS(S Y N -S ILU RIAN EV EN T )MIDDL E ORDOV ICIANW ILD BIG HT G RO U P (uppe r part)m O:WP Arc-related turb idites (youn ger Wild Bightsequen ce)P e nnys Brook Formation (middle and uppe r divisions)
P RE-MIDDLE S ILU RIAN MARIN EO V ERS T EP S EQU EN CESREG IO N ALLY METAMO RP HO S ED RO CKS(S Y N -S ILU RIAN EV EN T )L AT E ORDOV ICIANS HO AL ARM FO RMAT IO NlO:SA T ran sgressive high-stan d sedim en tary cover(post-arc)
RO CKS O F T HE RO BERT ’S ARMV O LCAN IC BELTEARL Y ORDOV ICIAN–L AT EORDOV ICIANStratified rock un its from the Mid-Iapetan realm of the Dun n age Z on eREG IO N ALLY METAMO RP HO S ED RO CKS(LAT E O RDO V ICIAN -EARLY S ILU RIAN AN DYO U N G ER EV EN T )MIDDL E AND L AT E ORDOV ICIANRobe rt’s Arm volcanic be lt (southe ast part)L ate Ordovician –Early Silurian ?Burn t Pon d structural tract (BPT )lO-eS:SH Sops Head Com plex (in part)
Julie s Harbour phyllitic m e taturbiditem O :BP s
Julie s Harbour hornfe lsic schistm O :BP hs
Julie s Harbour migm atitic paragne issm O :BP pg
Burtons Harbour siltstonem O :BHHCs
He rring Cove basaltm O :BHHCv
Joe s Lake basaltic ande sitem O :CBv1
Joe s Lake basaltic and rhyolitic tuffsm O :CBv2
Tommys Arm Bridge mélangelO -e S :S Hm
G ummy Brook gabbrom O :G Bg
S hoal Arm Brook wackem O :W P m
S ops Arm Brook argillitem O :W P u
G ummy P ond shalelO :S Ag
Stratified rock un its n ot in cluded in theRob ert’s Arm volcan ic b eltP RE-CARBO N IFERO U S T ERRES T RIALO V ERS T EP S EQU EN CEREG IO N ALLY METAMO RP HO S ED RO CKS(S ILU RIAN O R YO U N G ER EV EN T )EARL Y –MIDDL E SIL U RIANS P RIN G DALE G RO U P (low e r part)S:S V olcan osedim en tary b asin fill (Kin gs Brooksequen ce)
SIL U RIAN?HO DG ES HILL IN T RU S IV E S U IT ES:HI Post-m etam orphic pluton ic suite in the Rob ert’sArm volcan ic b elt
Pluton ic rock un its n ot in cluded in theRob ert’s Arm volcan ic b eltMID P ALEO ZO IC IN T RU S IO N SU N METAMO RP HO S ED IN T RU S IV E RO CKS
Kings Brook sandstoneS :S S
Kings Brook basaltS :S V m1
Rocky P ond graniteS :HIrpg
Rocky P ond dioriteS :HIrpdr
eO:Rwb West L ake Brook division
eO:Rsp Starkes Pon d division
O:R Rob ert's Arm accreted terran esO:Rc Ordovician calc-alkalin e volcan ic an d alliedsedim en tary rocks
Middle Ordovician ?South Brook structural tract (SBT )m O:Rgi Black Gull Islan d division
L ate Early OrdovicianGullb ridge structural tract (GT )eO:R Rob ert’s Arm un its in the Dawes Pon d–Great GullL ake–L oon Pon d areaeO:Rph Powderhouse division
eO:Rgb Gull Brook Bridge division
eO:Rdb Dawes Pon d Brook division
Pluton ic un its coeval with rocks of theRob ert’s Arm volcan ic b eltREG IO N ALLY METAMO RP HO S ED IN T RU S IV ERO CKS (S Y N -O RDO V ICIAN AN D LAT ER EV EN T S )L AT E EARL Y ORDOV ICIAN?eO:F Pre-tecton ic in trusion s in the n orthwest part of theRob ert’s Arm volcan ic b elt
RO CKS O F T HE EAS T ERN O P HIO LIT EBELTPluton ic rock un its older than theRob ert’s Arm volcan ic b eltREG IO N ALLY METAMO RP HO S EDIN T RU S IV E RO CKS (S Y N -O RDO V ICIAN AN DLAT ER EV EN T S )EARL Y ORDOV ICIANeO:H Metam orphosed in trusion s in rocks of the Easternophiolite b elteO:HM Man sfield Cove Com plex
De e r P ond sandy wackem O :CCRs
De e r P ond rhyolite tuffm O :CCv2
De e r P ond thole iitic basaltm O :CCv1
P ow de rhouse tufface ous wackee O :Rphw
G ull Brook Bridge tuff and jaspe ritee O :Rgb3
G ull Brook Bridge pumice ous wackee O :Rgb2
G ull Brook Bridge basaltic ande sitee O :Rgb1
Daw e s P ond Brook calc-alkalic pillow bre cciae O :Rdb3
Daw e s P ond Brook rhyodacite and aquage ne tuffe O :Rdb2
Daw e s P ond Brook rhyolite tuff and re d mudstonee O :Rdb1
Daw e s P ond Brook rhyolite bre cciae O :Rdbf
Daw e s P ond Brook unse parate de O :Rdbu
W e st Lake Brook basaltic ande sitee O :Rwb3
W e st Lake Brook arc thole iitee O :Rwb2
W e st Lake Brook high-alumina basalte O :Rwb1
W e st Lake Brook unse parate de O :Rwbu
S tarke s P ond bande d rhyolitee O :Rspr
Mud P ond T e rraneO :RCm
Boot Harbour T e rraneO :RCb
Loon P ond granitee O :FLg
Loon P ond granodioritee O :FLgd
Loon P ond dioritee O :FLd
granodiorite - tonalitee O :HMg
Stratified rock un its from the Notre Dam eSub zon e of the Dun n age Z on eREG IO N ALLY METAMO RP HO S ED RO CKS(O RDO V ICIAN AN D S ILU RIAN EV EN T S )EARL Y AND MIDDL E ORDOV ICIANRobe rt’s Arm volcanic be lt (northw e st part)L ate Middle OrdovicianCrescen t Com posite structural tract (CCT )m O:CC Deer Pon d division
Black G ull Island pillow e d thole iitem O :Rgi
RO CKS O F T HE W ES T ERN N O T RE DAMEBAY V O LCAN IC BELTStratified un its older than the rocks of theRob ert’s Arm volcan ic b eltREG IO N ALLY METAMO RP HO S ED RO CKS(CAMBRO -O RDO V ICIAN EV EN T S )L AT E CAMBRIAN OR OL DER?C:? oldest con stituen t of the Western Notre Dam e Bayvolcan ic b eltC:L L ushs Bight Group
basaltic tuffC:Lu?
pillow e d basaltC:Lu
eO:HH Hall Hill Com plex
quartz dioritee O :HHs
bande d m e tagabbroe O :HHg
SY MBOL SMajor StructuresAxial T race of Early Form ed Folds
Axial T race of L ate Form ed Folds
U pright syncline or synform; plunge dire ction indicate d by single arrow on axial trace(variably plunging to ve rtical) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O ve rturne d anticline or antiform; tick on axial trace indicate s dip dire ction of axial surface ;plunge dire ction indicate d by single arrow (subhorizontal to re cline d) . . . . . . . . . . . . . . . . . . . . .
O ve rturne d syncline or synform; tick on axial trace indicate s dip dire ction of axial surface ;plunge dire ction indicate d by single arrow (subhorizontal to re cline d) . . . . . . . . . . . . . . . . . . . . .
U pright anticline or antiform; plunge dire ction indicate d by single arrow on axial trace . . . . . . . .
U pright syncline or synform; plunge dire ction indicate d by single arrow on axial trace . . . . . . . .
O ve rturne d anticline or antiform; tick on axial trace indicate s dip dire ction of axial surface ;plunge dire ction indicate d by single arrow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O ve rturne d syncline or synform; tick on axial trace indicate s dip dire ction of axial surface ;plunge dire ction indicate d by single arrow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Late stage synform in klippe ; upright or ste e ply incline d asymm e trical;plunge dire ction indicate d by multiple arrows on axial trace . . . . . . . . . . . . . . . . . . . . . . . . . . . . >
U pright anticline or antiform; plunge dire ction indicate d by single arrow on axial trace(variably plunging to ve rtical) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
U pright syncline affe cting te rre strial ove rste p se que nce strata (ge ntle plunge dire ctionindicate d on axial trace ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
U pright anticline affe cting te rre strial ove rste p se que nce strata (ge ntle plunge dire ctionindicate d on axial trace ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Late stage antiform in fe nste r; upright or ste e ply incline d asymm e trical;plunge dire ction indicate d by multiple arrows on axial trace . . . . . . . . . . . . . . . . . . . . . . . . . . . . >
T ran sportation
U nknown road/trail . . . . . . . . . . . . . . . . . . . . . .
Abandone d re source road . . . . . . . . . . . . . . . .
Re source road . . . . . . . . . . . . . . . . . . . . . . . . .
U npave d public road . . . . . . . . . . . . . . . . . . . .
P ave d public road . . . . . . . . . . . . . . . . . . . . . .
T rans Canada Highway . . . . . . . . . . . . . . . . . .
Con tacts
T race of Early Form ed Faults
T race of L ate Form ed Faults
T ranscurre nt or late ral fault (sinistral strike -slip; approximate ) . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ductile re ve rse fault affe cting ove rste p se que nce strata (barbs drawn on hangingw all plate ;te e th indicate original fault dip; approxim ate ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Folde d thrust fault (barbs drawn on hangingw all plate ; te e th indicate pre se nt dire ctionof fault dip; approximate ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T race of L ate Stage Faults
S ynm e tamorphic re ve rse fault flanking fe nste r or klippe (transpare nt barbs drawn onhangingw all plate ; te e th indicate original fault dip; approxim ate ) . . . . . . . . . . . . . . . . . . . . . . . . .
S ynm e tamorphic re ve rse fault associate d w ith late form e d folds (white barbs drawn onhangingw all plate ; te e th indicate original fault dip; approxim ate ) . . . . . . . . . . . . . . . . . . . . . . . . .
Cordie rite -andalusite -m agne tite isograd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ." " "
Limit of ge ological mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intrusive contact, approximate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
S tratigraphic contact, approxim ate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
U nconformity, approximate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . !! !!
T ranscurre nt or late ral fault (de xtral strike -slip; approximate ) . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Geochem istry
Sam ple Station s
Min or Structures
Igne ous laye ring (tops known) . . . . . . . . . . . . . . . . . . . . . . . .
Joint (dire ction of dip indicate d) . . . . . . . . . . . . . . . . . . . . . . .
V e in (dire ction of dip indicate d) . . . . . . . . . . . . . . . . . . . . . . .
Me tamorphic foliation (ge ne ration unknown, 1st, 2nd) . . . . .
Fold axial surface (ge ne ration unknown) . . . . . . . . . . . . . . .
W -fold axis (ge ne ration unknown) . . . . . . . . . . . . . . . . . . . .
S -fold axis (ge ne ration unknown, 2nd) . . . . . . . . . . . . . . . . .
Fold axis (ge ne ration unknown, 1st, 2nd) . . . . . . . . . . . . . . .
Be dding (tops known, ove rturne d; tick for dip dire ction,dot for facing dire ction) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Be dding (tops unknown; tick for dip dire ction) . . . . . . . . . . . .
Mine ral occurre nce (m e tallic) . . . . . . . . . . . . . . . . . . . . . . . . .Ï
Lithoge oche m istry (W hole rock) sample site . . . . . . . . . . . . .!G
S . S w inde n and P. S acks (1986) . . . . . . . . . . . . . . . . . . . . . .?B. O 'Brie n (1996) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .?
B. O 'Brie n (2002) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .?