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Maps
After the 1940s, state-based support for geologic mapping in Louisiana dwindled, essentially ending the initial period of modern geologic mapping in the state. Since then, the Louisiana Geological Survey had been unable to meet most routine requests for geologic maps from state agencies, developers, city planners and the public. Recently, the survey began a regular program for surface-geologic mapping with funding assistance from the STATEMAP component of the U.S. Geological Survey’s (USGS) National Cooperative Geologic Mapping Program. The Louisiana Geological Survey intends to compile surface geology maps in 1:100,000-scale quadrangle format for the entire state, beginning in south Louisiana. The primary tool will be source maps created during intermediate-scale mapping projects funded by the USGS in portions of the state above the coastal zone over the last 10 or so years. To date, the survey has produced the four 30-by-60-minute geologic quadrangles listed below. Two more, Crowley and Ponchatoula, are slated for production in the spring.
Baton Rouge 30x60 minute geologic quadrangle by P.V. Heinrich and W.J. Autin. 2000. Scale 1:100,000. One sheet 28 by 46 inches. $10.
De Ridder 30 X 60 minute geologic quadrangle by J. Snead, P.V. Heinrich and R.P. McCulloh. 2002. Scale 1:100,000. One sheet 27 by 46 inches. $10.
Ville Platte 30X60 minute geologic quadrangle by J. Snead, P.V. Heinrich, and R.P. McCulloh. 2002. Scale 1:100,000. One sheet 27 by 46 inches. $10.
Lake Charles 30X60 minute geologic quadrangle by P.V. Heinrich, J. Snead and R.P. McCulloh. 2002. Scale 1:100,000. One sheet 27 by 46 inches. $10.
To order these and other maps from the Louisiana Geological Survey,
write to LGS, P.O. Box G, Baton Rouge, LA 70893. Or call 225-578-8590.
U.S. Geological Survey
I-2719. MISSOURI. Geologic map of the Low Wassie quadrangle, Oregon and Shannon Counties, Missouri by R.E. Weems. 2002. Scale 1:24,000. One color sheet 54 by 40 inches. The Low Wassie quadrangle, in south-central Missouri, lies within the Salem Plateau astride the Current River-Eleven Point River divide, and includes part of the Mark Twain National Forest. This area is of special interest for its subsurface lead-ore potential. The map and text describe the surface geology (mostly Ordovician dolomite, Pleistocene loess and terrace deposits). Also included are structure contour maps of the base of the subsurface Cambrian units. Available for $7 from USGS Information Services.
I-2723. CALIFORNIA. Geologic map of the Lassen Peak, Chaos Crags, and Upper Hat Creek area, California by R.L. Christiansen, M.A. Clynne and L.J.P. Muffler. 2002. Scale 1:24,000. One color sheet 56 by 36 inches with 17-page text. Products of the youngest volcanism of the Lassen region are exposed in Lassen Volcanic National Park and its vicinity. The map delineates areas affected by the 1914 to 1917 eruptions of Lassen Peak and by the approximately 1,000-year-old volcanism associated with the Chaos Crags. An inset map at a scale of 1:2,500 shows geologic relations in the Lassen Peak summit area. Available for $7 from USGS Information Services.
HA-748. WYOMING. Potentiometric surfaces, altitudes of the tops, and hydrogeology of the Minnelusa and Madison aquifers, Black Hills area, Wyoming by T.T. Bartos, L.L. Hallberg and K.M. Ogle. Prepared in cooperation with the Wyoming State Engineer’s Office. 2002. Scale 1:100,000. Four color sheets 42 by 34 inches. Characteristics of the aquifers are described from earlier studies. Continuous water-level measurements at three locations with paired monitoring wells completed in both aquifers are examined. The relative age of groundwater samples collected from a selected number of wells completed in both aquifers is discussed. Available online, or for $14 from USGS Information Services.
MF-2390. COLORADO. Geologic map of the Dillon quadrangle, Summit and Grand Counties, Colorado by K.S. Kellogg. 2002. Scale 1:24,000. One color sheet 32 by 33 inches with 11-page text. Available free online, or for $20 from USGS Information Services.
MF-2395. WASHINGTON. Geologic map of the Battle Ground 7.5-minute quadrangle,
Clark County, Washington by K.A. Howard. 2002. Scale 1:24,000. One color
sheet 30 by 35 inches with 18-page text. Available at geopubs.wr.usgs.gov/map-
mf/mf2395, or for $20 from USGS Information Services.
I-2540-C. NEW JERSEY. Surficial geologic map of northern New Jersey by B.D. Stone, S.D. Stanford and R.W. Witte. 2002. Scale 1:100,000. Three color sheets that are 58 by 41 inches, 53 by 41 inches and 48 by 40 inches with 41-page text. Available for $14 from USGS Information Services.
I-2755. NEVADA. Geologic map of the Yucca Mountain region, Nye County, Nevada by C.J. Potter, R.P. Dickerson, D.S. Sweetkind, R.M. Drake II, E.M. Taylor, C.J. Fridrich, C.A. San Juan and W.C. Day. Prepared in cooperation with the U.S. Department of Energy, National Nuclear Security Administration. 2002. Scale 1:50,000. One color sheet 39 by 57 inches with 44-page text. Available for $7 from USGS Information Services.
To order USGS maps, contact USGS Information Services, P.O. Box 25286,
Denver, CO 80225. Phone: 888-ASK-USGS (888/275-8747).
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