R. 100 W.

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

Qls

Qls

Qcg

Qcg

Qls

Tgv

Qc

Qls

Qc

Qls

Qal

Tsb

Qls

Qcg

Qls

Qls

Qls

Qls

Qc

Qal

Qcg

Qls

Qal

Qls

Qc

Qc

Qc

Qls

Tsb

Qc

Qcg

Qls

Qc

Qls

Qsc

Qls

Qls

Qls

Qls

Qls

Qls

Qls

Qcg

Qls

Qal

Qls

Qls

Qsc

Qls

Qls

Qls

Qcg

Qls

Qal

Qls

Qcg

Qls

Qls

Qc

Qls

Qls

Qls

QlsQls

Qls

Qls

Qls

Qc

Qcg

Qls

Qls

QlsQls

Qal

Qal

Qal

Qal

Qls

Qls

Qls

Qls

Qls

Qal

Qls

Qls

Qal

Qcg

Qcg

Qal

Qcg

Qls

Qls

Qls

Qal

Qal

Qal

Qcg

Qls

Qls

Tsb

Qls

Qcg

Qls

Qal

Qc

Qls

Qal

Qls

Tsb

Qal

Qls

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

Tsb

TsbTsb

Tsb

Tsb

Tsb

North Dakota Geological Survey24K: SdlB SW - sg

Cartographic Comp ilation: Elroy L. Kadrmas

102o 30' 00"

47o 37' 00"

102o 22' 30"

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

47o 37' 30"

Saddle Butte SW Quadrangle, North Dakota

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

Saddle Butte SW Quadrangle, North Dakota(STRING BUTTES) (SA

DDLE BUTTE)(MANDAREE NE)

(DUNN CENTER NE) (HALLIDAY NE)

(MAN

DARE

E SE

)

(HALLIDAY NW)

(HAY

FLAT

)

Edward C. Murphy2007

MN13o 30'

1970 Magnetic North Declinat ion at Center of Sheet

0 0.5 1Miles

1:24,000Scale

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 30' 00" and 47o 37' 30"Lambert Co nformal Conic Projection

T. 1 48 N.

T. 1 47 N.

T. 1 47 N.

T. 1 46 N.

EXPLANATION

Qal

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.

RECENT

QUATERNARY SYSTEM

R. 92 W.R. 93 W.

Qc ColluviumPoorly sorted mixture of sand, silt, clay, and gravel forming apronsat the base of steep slopes.

Geologic Symbols

Other Features

Unpaved Road

Known contact between two geologic units.Approximate contact between two geologic units.

Water

Paved Road

PLEISTOCENECOLEHARBOR GROUP

RECENT/PLEISTOCENELandslide 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.

Glacial ChannelsQscGenerally contains 50 to 200 feet of sand and gravel, silt, clay,and til l (meltwater-channel fill). Overlain by Recent alluvium (Qal)of variable thickness. This map unit was created to distinguishbetween these very thick channel fil l deposits and the moderateto thin deposits mapped as Qal.

TERTIARY SYSTEMEOCENE/PALEOCENE

GOLDEN VALLEY FORMATIONTgv

Alternating beds of yellowish brown to brown, micaceoussandstone, siltstone, mudstone, claystone, and lignite.

Camels Butte Member

Brightly colored, kaolinitic claystone, mudstone, and sandstone,typically overlain by a thin silicious bed (silcrete) or lignite.

Bear Den Member

PALEOCENE

SENTINEL BUTTE FORMATIONTsb

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