Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls ( / 2 ( / 85 ( / 85 ( / 2 ( / 2 ( / 2 Cartographic Compilation: E. L. Kadrmas & S.S. Kranich 103 o 45 ' 00 " 48 o 15 ' 00 " 103 o 37 ' 30 " 103 o 37 ' 30 " 103 o 45 ' 00 " 48 o 07 ' 30 " 48 o 07 ' 30 " 48 o 15 ' 00 " Areas of Landslides Williston West Quadrangle, North Dakota (OTTER TAIL CREEK) (BLACKTAIL CREEK) (BONETRAILL SE) (TR EN TON ) (WILLISTON SE) (TR EN TON N E) (WILLISTON SW) (WILLISTON EAST) North Dakota Geological Survey 24K: Wlst W - l Edward C. Murphy, State Geologist Lynn D. Helms, Director Dept. of Mineral Resources Geologic Symbols Known contact between two geologic units. UNIT DESCRIPTIONS QUATERNARY SYSTEM RECENT/PLEISTOCENE Geology Undifferentiated T. 1 55 N . T. 1 54 N . R. 101 W. R. 102 W. MN 1976 Magnetic North Declination at Center of Sheet 14 o Williston West Quadrangle, North Dakota Edward C. Murphy 2012 Variable mixture of strata and deposits that have slid to the base of steep slopes. Landslide Deposits Qls Landslides identified on this quadrangle were mapped from stereo pairs, black and white 1:20,000 scale aerial photographs flown between 6-21-58 and 9-7-58. As a result these maps can be used to identify areas that are vulnerable to slope failure, but are not an up to date assessment of all landslides for the area. Other Features Unpaved Road Paved Road US Highway ( / 2 0 0.5 1 Miles 1:24,000 Scale Standard Parallels 48 o 07 ' 30 " an d 48 o 15 ' 00 " USGS 7.5 Min ute Topo graph ic Map Co ntour Interval 1 0 Feet Lambert Conformal Conic Projection 1927 North American Datum NGVD 1929 Road Layer Rectified to 2003 NAIP Digital Orthophoto