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