24K: SdlB SW - sg Surface Geology24K: SdlB SW - sg Cartographic Compilation: Elroy L. Kadrmas 102o...

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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 Qls Qls Qls Qls Qls Qc Qcg Qls Qls Qls Qls 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 Tsb Tsb Tsb Tsb Tsb North Dakota Geological Survey 24K: SdlB SW - sg Cartographic Compilation: Elroy L. Kadrmas 102 o 30 ' 00 " 47 o 37 ' 00 " 102 o 22 ' 30 " 102 o 22 ' 30 " 102 o 30 ' 00 " 47 o 30 ' 00 " 47 o 30 ' 00 " 47 o 37 ' 30 " Saddle Butte SW Quadrangle, North Dakota Edward C. Murphy, State Geologist Lynn D. Helms, Director Dept. of Mineral Resources Surface Geology Saddle Butte SW Quadrangle, North Dakota (STRING BUTTES) (SADDLE BUTTE) (MANDAREE NE) (DUNN CENTER NE) (HALLIDAY NE) (MANDAREE SE) (HALLIDAY NW) (HA Y FLA T) Edward C. Murphy 2007 MN 13 o 30 ' 1970 Magnetic North Declination at Center of Sheet 0 0.5 1 Miles 1:24,000 Scale Contour Interval 20 Feet USGS 7.5 M inu te Topog raphi c M ap 1927 North American Datum NGVD 1929 Road Layer Rectified to 200 3 NAIP D igital Orthoph oto Stand ard Parallels 47 o 30 ' 00 " and 47 o 37 ' 30 " Lambert Conformal Conic Projection T. 1 48 N . T. 1 47 N . T. 1 47 N . T. 1 46 N . EXPLANATION Qal OAHE FORMATION Alluvium Brownish gray to black sand, silt, clay, and lenses of gravel; flood- plain deposits along recent drainages. Includes lower terrace deposits. Typically less than 50 feet thick. RECENT QUATERNARY SYSTEM R. 92 W. R. 93 W. Qc Colluvium Poorly sorted mixture of sand, silt, clay, and gravel forming aprons at 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 PLEISTOCENE COLEHARBOR GROUP RECENT/PLEISTOCENE Landslide Deposits Ql s Variable mixture of strata and deposits that have slid to the base of steep slopes. Glacial Deposits Qc g Grayish brown, sandy, siltly, bouldery clay with lenses of sand and gravel (glacial till). May occasionally include thick deposits of glacial outwash. Glacial Channels Qsc Generally contains 50 to 200 feet of sand and gravel, silt, clay, and till (meltwater-channel fill). Overlain by Recent alluvium (Qal) of variable thickness. This map unit was created to distinguish between these very thick channel fill deposits and the moderate to thin deposits mapped as Qal. TERTIARY SYSTEM EOCENE/PALEOCENE GOLDEN VALLEY FORMATION Tgv Alternating beds of yellowish brown to brown, micaceous sandstone, 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 FORMATION Tsb Alternating beds of grayish brown to gray sandstone, siltstone, mudstone, claystone, and lignite.

Transcript of 24K: SdlB SW - sg Surface Geology24K: SdlB SW - sg Cartographic Compilation: Elroy L. Kadrmas 102o...

Page 1: 24K: SdlB SW - sg Surface Geology24K: SdlB SW - sg Cartographic Compilation: Elroy L. Kadrmas 102o 30' 00" 47o '37 00" 102o '22 30" 102 30' 00" 102oo 22' 30" 47o 3 0' 000" 47o 3 '

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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.