Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

165656 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 5662, results 141526 - 141550

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Ground-water hydrology of prairie potholes in North Dakota
C. E. Sloan
1972, Professional Paper 585-C
Prairie potholes (sloughs) are water-holding depressions of glacial origin in the prairies of the Northern United States and southern Canada. Water is supplied to the potholes by precipitation on the water surface, basin runoff, and seepage inflow of ground water. Depleticn of pothole water results from evapotranspiration, overflow, and seepage...
Hydrologic investigations of prairie potholes in North Dakota, 1959-68
W. S. Eisenlohr Jr., editor(s)
1972, Professional Paper 585-A
A prairie pothole is a depression in the prau1e, capable of storing water, that is the result of glacial processes. Years ago, there were many hundreds of thousands of prairie potholes in the North-Central United States, but large numbers of them have been drained for agricultural use. This report is...
Tectonic map of Liberia based on geophysical and geological surveys
John Charles Behrendt, Cletus S. Wotorson
1972, Open-File Report 72-32
Interpretation of the results of aeromagnetic, total-gamma radioactivity, and gravity surveys combined with geologic data for Western Liberia from White and Leo (1969) and other geologic information allows the construction of a tectonic map of Liberia. The map approximately delineates the boundaries between the Liberian (ca. 2700 m.y.) province in...
Geological and geophysical investigations of an Apollo 9 photo anomaly near Point of Pines, Arizona
Calvin S. Bromfield, G. P. Eaton, D. L. Peterson, J.C. Ratte
1972, Open-File Report 72-51
An infrared photograph of southeastern Arizona, taken during the Apollo 9 multispectral terrain photography experiment in 1969, reveals a ringlike feature, some 3-4 miles (5-6 kin) in diameter, on the Natanes Plateau, 35 miles (56 kin) north of the town of Safford. Because the feature occurs in an area of...
Geology of Area A, Catak iron deposit, Egrigoz Mountains Kutahya Province, Turkey
Patrick James Barosh
1972, Open-File Report 72-23
The Catak iron deposit consist of magnetite-bearing lenses distributed along the northeast-trending contact of the north end of. the Egrigoz granitic massif in Kutahya Province. Area A is near the northeast end of the deposit and contains three main irregular magnetite lenses. A body of talc-silicate hornfels, almost surrounded by...
Metal provinces of Alaska
Allen L. Clark, H. C. Berg, E.H. Cobb, G.D. Eberlein, E.M. MacKevett Jr., T. P. Miller
1972, Open-File Report 72-69
Placer deposits of Alaska
Edward Huntington Cobb
1972, Open-File Report 72-71
Placer deposits, in addition to their intrinsic value, serve as indicators of areas of potential development of lode deposits. Any possibility that Alaska may again become an important source of metallic mineral commodities depends in part on an inventory of placer deposits and a knowledge of the geology of their...