R. 100 W.

Tsb

Qcg

Qcg

Qcg

Qal

Qcg

Qcg

Qcg

Qls

Tsb

Qls

Qcg

Qal

Qcg

Qcg

Qls

Tsb

Qls

Qcg

QcgTsb

Qal

Qcg

Qls

Qcg

Qcg

Qcg

Qcg

Tsb

Qcg

Qls

Tsb

Qal

Qal

Qal

Qcg

Qls

Qls

Qls

Qal

Qls

Qal

Qls

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

Qcg

Qal

North Dakota Geological Survey24K: SdlB - sg

Cartographic Comp ilation: Elroy L. Kadrmas

102o 22' 30"

47o 45' 00"

102o 15' 00"

102o 15' 00"102o 22' 30"47o 37' 30" 47o 37' 30"

47o 45' 00"

Saddle Butte Quadrangle, North Dakota

Edward C. Murphy, State GeologistLynn D. Helms, Director Dept. of Mineral ResourcesSurface Geology

Saddle Butte Quadrangle, North Dakota(NEW TOWN SE) (PA

RSHALL SW

)(NEW TOWN SW)

(SADDLE BUTTE SW

) (TWIN BUTTES)

(STRI

NG B

UTTE

S)

(HAY FLAT)

(RAU

B NW

)

Edward C. Murphy2007

MN13o

1970 Magnetic North Declinat ion at Center of Sheet

Contour Interval 20 FeetUSGS 7.5 Minu te Topog raphic Map1927 No rth American Datum NGVD 1929

Road Layer Rectified to 200 3 NAIP D igital Orthoph oto

Stand ard Parallels 47o 37' 30" and 47o 45' 00"Lambert Co nformal Conic Projection

Geologic Symbols

Other Features

Unpaved Road

Known contact between two geologic units.

EXPLANATION

Qal

PLEISTOCENECOLEHARBOR GROUP

RECENT/PLEISTOCENE

OAHE FORMATION

AlluviumBrownish gray to black sand, silt, c lay, and lenses of gravel; flood-plain deposits a long recent drainages. Includes lower terracedeposits. Typically less than 50 feet thick.

Landslide DepositsQls

Variable mixture of stra ta and deposits that have slid to the base of steep slopes.

Glacial DepositsQcgGrayish brown, sandy, siltly, bouldery clay with lenses of sand andgravel (glacial t ill). May occasionally include thick deposits ofglacial outwash.

RECENTQUATERNARY SYSTEM

T. 1 49 N.

T. 1 48 N.

TERTIARY SYSTEM

PALEOCENE

SENTINEL BUTTE FORMATIONTsb

Alternating beds of grayish brown to gray sandstone, siltstone,mudstone, claystone, and lignite.

0 0.5 1Miles

1:24,000Scale

Water

R. 90 W.R. 91 W.

R. 91 W.R. 92 W.