areas of landslides robinson lake quadrangle, …24k: rbsl - l edward c. murphy, state geologist...
TRANSCRIPT
Qls
Qls
QlsQls
Qls
Qls
Qls
Qls
Qls
Qls
Qls
Qls
Qls
Qls
QlsQls
Qls
Qls
1804
1804
Cartographic Compilat ion: E. L. Kadrmas & S.S. Kran ich
102o 37' 30"
48o 15' 00"
102o 30' 00"
102o 30' 00"102o 37' 30"48o 07' 30" 48o 07' 30"
48o 15' 00"
Areas of LandslidesRobinson Lake Quadrangle, North Dakota
(ROSS) (STANLEY)(MANITOU)
(RAT LAKE SW) (BELDEN SW)
(RAT
LAK
E)
(RAT LAKE SE)
(SIKE
S DAM
)
North Dakota Geological Survey24K: RbsL - l
Edward C. Murphy, State GeologistLynn D. Helms, Director Dept. of Mineral Resources
Geologic Symbols
Known contact between two geologic units.
UNIT DESCRIPTIONS
QUATERNARY SYSTEM
RECENT/PLEISTOCENE
Geology Undifferentiated
T. 155 N.
T. 154 N.
MN
1981 Magnetic North Declinat ion at Center of Sheet
12o
R. 92 W.R. 93 W.
Other Features
Unpaved Road
State Highway1804
0 0.5 1Miles
1:24,000Scale
Stand ard Paral lels 4 8o 07' 30" an d 48o 15' 00"
USGS 7.5 Min ute Topo graph ic Map Co ntour Interval 2 0 Feet
Lambert Conformal Conic Projection1927 No rth American Datum NGVD 1929
Road Layer Rectified to 2 003 NAIP Digi tal Orth ophotoRobinson Lake Quadrangle, North Dakota
Edward C. Murphy2011
Variable mixture of strata and deposits that have slid to the base ofsteep slopes.
Landslide DepositsQls
Landslides identified on this quadrangle were mapped from stereopairs, black and white 1:20,000 scale aerial photographs flownbetween 6-6-58 and 9-7-58. As a result these maps can be usedto identify areas that are vulnerable to slope failure, but are not anup to date assessment of all landslides for the area.