Use of imaging in the 0.46-2.36 [micrometers] spectral region for alteration mapping in the Cuprite mining district, Nevada
Michael J. Abrams, R. P. Ashley, L. C. Rowan, Alexander F.H. Goetz, A.B. Kahle
1977, Open-File Report 77-585
Color composites of Landsat MSS ratio images that display variations in the intensity of ferric-iron absorption bands are highly effective for mapping limonitic altered rocks, but ineffective for mapping nonlimonitic altered rocks. Analysis of 0.45-2.5 ?m field and laboratory spectra shows that iron-deficient opalites in the Cuprite mining district, Nevada,...
Approximate areas of recharge to the Chicot and Evangeline aquifer systems in the Houston-Galveston area, Texas
R.K. Gabrysch
1977, Open-File Report 77-754
The purpose of this report is to show the general geographic areas of recharge to the Chicot and Evangeline aquifers in the Houston area, Texas (fig. 1). The areas of recharge shown on the map were determined by interpretations of subsurface hydrology, soil surveys of Harris County, and surface and...
Ground magnetic, E-mode VLF, and radiometric surveys at Phillips Mine-Camp Smith uranium prospect, Westchester and Putnam Counties, New York
David L. Campbell, Richard I. Grauch
1977, Open-File Report 77-780
No abstract available....
Hydrologic data for urban studies in the Dallas, Texas metropolitan area, 1975
B.B. Hampton, C.M. Wood
1977, Open-File Report 77-381
No abstract available....
Aeromagnetic map of parts of the Rome, Atlanta, and Phenix City 1° x 2° quadrangles, Georgia
Water Resources Division, U.S. Geological Survey
1977, Open-File Report 77-345
No abstract available....
Floodflow characteristics at proposed channel-relocation site on Mohawk River near Rome, New York
Thomas J. Zembrzuski, Bernard Dunn
1977, Open-File Report 77-328
Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Eagle Quadrangle, Alaska
Edward Huntington Cobb
1977, Open-File Report 77-845
These summaries of references are designed to aid in library research on metallic and nonmetallic (other than mineral fuels and construction materials) mineral occurrences in the Eagle quadrangle, Alaska. All references to reports of the Geological Survey, to most reports of the U.S. Bureau of Mines, and to most reports...
Stratigraphic and hydrogeologic framework of part of the coastal plain of Texas
E.T. Baker
1977, Open-File Report 77-712
The subsurface delineation of hydrogeologic units of Miocene and younger age and stratigraphic units of Paleocene to Holocene age establishes and interrelationship of these units statewide across much of the Coastal Plain of Texas. The 11 dip sections and 1 strike section, which extend from the land surface to 7...
Schlumberger electric soundings in the Charleston, S.C. earthquake area
David L. Campbell
1977, Open-File Report 77-617
No abstract available....
The Triassic Chitistone Limestone, Wrangell Mountains, Alaska: stressing detailed descriptions of sabkha facies and other rocks in lower parts of the Chitistone and their relations to Kennecott-type copper deposits
Augustus K. Armstrong, E. M. MacKevett
1977, Open-File Report 77-217
Recent investigations show that sabkha deposits were important in the genesis of Kennecott-type copper ore. Massive chalcocite-rich lodes at Kennecott and nearby deposits formed in the lower 110 meters of the Upper Triassic Chitistone Limestone. The Chitistone and superimposed Upper Triassic and Jurassic sedimentary rocks formed in a marine basin...
Bouguer gravity map of the northern Mississippi Embayment, parts of Missouri, Arkansas, Tennessee, Kentucky, and Illinois
T.G. Hildenbrand, C. P. Ervin, John Hendricks, Gordon R. Keller, L. D. McGinnis, R. G. Stearns
1977, Open-File Report 77-228
No abstract available....
Aeromagnetic map of the Salt Basin area, Texas
Water Resources Division, U.S. Geological Survey
1977, Open-File Report 77-231
Bouguer gravity map of the Mogollon-Santa Rita-Tyrone region, southwestern New Mexico
Gordon P. Eaton, D. L. Peterson, Michael Webring
1977, Open-File Report 77-650
No abstract available....
Analyses of native water, core material, and elutriate samples collected from the Atchafalaya River and Atchafalaya Bay
Charles R. Demas
1977, Open-File Report 77-769
During October and November 1976 the U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers, collected native water and core material from 14 sites along the Atchafalya River in Louisiana (from the head of Whiskey Bay Pilot Channel to American Pass) and 5 sites in Atchafalya Bay...
Aeromagnetic map of part of the southern Powder River basin, Wyoming
Joseph S. Duval, J. A. Pitkin, David L. Macke
1977, Open-File Report 77-621
Aeroradioactivity map of south-central North Carolina
Water Resources Division, U.S. Geological Survey
1977, Open-File Report 77-206
Mineral resources of the Chama-southern San Juan Mountains Wilderness Study Area, Mineral, Rio Grande, Archuleta, and Conejos counties, Colorado
Water Resources Division, U.S. Geological Survey
1977, Open-File Report 77-309
Aeroradioactivity map of part of southeastern Georgia
Coastal Plains Regional Commission, Water Resources Division, U.S. Geological Survey
1977, Open-File Report 77-97
Preliminary geologic map of the Emery West quadrangle, Emery and Sevier Counties, Utah
Philip T. Hayes, Joseph D. Sanchez
1977, Open-File Report 77-822
No abstract available. ...
U.S. Geological Survey programs of resource assessment, geologic environmental studies, and marine geology investigations of the continental margin adjacent to deep sea areas in the Atlantic and Gulf of Mexico
John Charles Behrendt
1977, Open-File Report 77-320
A computer program to calculate the resistivity and induced polarization response for a three-dimensional body in the presence of buried electrodes
Jeffrey J. Daniels
1977, Open-File Report 77-153
Three-dimensional induced polarization and resistivity modeling for buried electrode configurations can be achieved by adapting surface integral techniques for surface electrode configurations to buried electrodes. Modification of. the surface technique is accomplished by considering the additional mathematical terms required to express-the changes in the electrical potential and geometry caused by...
Aeromagnetic maps with geologic interpretations for the Tularosa Valley, south-central New Mexico
G. D. Bath
1977, Open-File Report 77-258
An aeromagnetic survey of the Tularosa Valley in south-central New Mexico has provided information on the igneous rocks that are buried beneath alluvium and colluvium. The data, compiled as residual magnetic anomalies, are shown on twelve maps at a scale of 1:62,500. Measurements of magnetic properties of samples collected in...
Application of remotely sensed land-use information to improve estimates of streamflow characteristics
Edward J. Pluhowski
1977, Open-File Report 77-632
Land-use data derived from high-altitude photography and satellite imagery are presented for 49 basins in Delaware, and eastern Maryland and Virginia. Based on 1:100,000 scale maps from high-altitude photography, basin land cover was extracted at the generalized Level I and the more detailed Level II classification categories. Level I land-use...
Carborne radiometric survey of the Nome area, Seward Peninsula, Alaska
Robert A. Brooks, Warren Irvin Finch
1977, Open-File Report 77-472
A carborne radiometric survey was made along the accessible roads in the Nome, Alaska, area. The background radiation was generally found to be low, about 40 cps, but higher radioactivity near granite was noted. No radioactive anomalies of a magnitude greater than three times the average background were encountered....
Hydrologic data for urban studies in the Austin, Texas, metropolitan area, 1975
K.L. Choffel, W.R. Roddy, R.N. Mitchell
1977, Open-File Report 76-885
No abstract available....
