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Depositional environment of Upper Cretaceous black sandstones of the Western Interior

Robert Stroud Houston, John F. Murphy

1977, Professional Paper 994-A

Movement of moisture in the unsaturated zone in a loess-mantled area, southwestern Kansas

Robert C. Prill

1977, Professional Paper 1021

A study of moisture movement associated with ponding near Garden City, Kansas, indicates that loess-manted areas have excellent potential for artificial recharge by water spreading. Infiltration stabilized at rates ranging from 0.7 to 2.2 feet (0.2 to 0.7 meter) per day reflecting changes in hydraulic conductivity of soil horizons. Results...

General geology and petrology of the Precambrian crystalline rocks, Park and Jefferson counties, Colorado

C. C. Hawley, Reinhard A. Wobus

1977, Professional Paper 608-B

An archaeological survey of the Watkins Field Investigations Installation, Section 17, T. 3 S., R. 65 W., Adams County, Colorado

Manton L. Botsford, Maria Botsford

1977, Open-File Report 77-772

Interpretation of electromagnetic soundings in the Raft River geothermal area, Idaho

Walter L. Anderson

1977, Open-File Report 77-557

Ordovician and Silurian graptolite succession in the Trail Creek area, central Idaho; a graptolite zone reference section

Claire Carter, Michael Churkin Jr.

1977, Professional Paper 1020

Calculation of gravity and magnetic anomalies along profiles with end corrections and inverse solutions for density and magnetization

John W. Cady

1977, Open-File Report 77-463

An equation derived for the vertical gravity field due to a body with polygonal cross section and finite strike length. The equations consists of the 2-dimensional equation of Talwani, Worzel, and Landisman (1959), with the addition of end corrections. Equations for the magnetic field due to a similar body were...

Chemical analyses of stream-sediment samples from the Table Mountain and Arctic quadrangles, northern Alaska

William Peters Brosge, H. N. Reiser

1977, Open-File Report 77-29

Otarioid seals of the Neogene

Charles Albert Repenning, Richard H. Tedford

1977, Professional Paper 992

Chemical analyses of 97 stream-sediment samples from the Coleen and Christian quadrangles, northern Alaska

William Peters Brosge, H. N. Reiser, Thomas E. Moore

1977, Open-File Report 77-458

Seismic refraction survey of the pre-Cretaceous basement surface near the inner edge of the coastal plain in Stafford and King George Counties, Virginia

Hans D. Ackermann, Muriel S. Grim

1977, Open-File Report 77-480

Effects of the catastrophic flood of December 1966, north rim area, eastern Grand Canyon, Arizona

Maurice E. Cooley, B. N. Aldridge, Robert C. Euler

1977, Professional Paper 980

Precipitation from the unusual storm of December 1966 was concentrated on highlands in northern Arizona, southwestern Utah , southern Nevada, and south-central California and caused widely scattered major floods in the four States. In Arizona the largest amount of precipitation was in the north rim area of eastern Grand Canyon,...

Calcic soils and calcretes in the southwestern United States

George Odell Bachman, Michael N. Machette

1977, Open-File Report 77-794

Secondary calcium carbonate of diverse origins, 'caliche' of many authors, is widespread in the southwestern United States. 'Caliche' includes various carbonates such as calcic soils and products of groundwater cementation. The term 'caliche' is generally avoided in this report in favor of such terms as calcrete, calcic soils, and pervasively...

Petroleum geology of the West Siberian Basin and a detailed description of the Samotlor oil field

James W. Clarke, O.W. Girard, James Peterson, Jack Rachlin

1977, Open-File Report 77-871

Background material for integrated marine navigation systems, marine gravimeters, and magnetometers/gradiometers

Robert Brune

1977, Open-File Report 77-648

Preliminary compilation of the bedrock geology of the land area of the Boston 2° sheet, Massachusetts, Connecticut, Rhode Island and New Hampshire

Patrick James Barosh, Richard J. Fahey, Maurice Henry Pease Jr.

1977, Open-File Report 77-285

No abstract available....

Chemical composition of Precambrian, Paleozoic, Mesozoic and Tertiary rocks from east-central Alaska

Earl E. Brabb, Bette R. Hamachi

1977, Open-File Report 77-631

The purpose of this report is to make available 108 analyses of a variety of igneous, sedimentary, and metamorphic rocks from east-central Alaska. The rocks were collected by the senior author, Michael Churkin, Jr., G. Donald Eberlein, Reuben J. Ross, Jr., and James Melik from 1960 to 1963....

Composite stratigraphic section of Tertiary volcanic rocks in Eldorado Mountains, Nevada

R. Ernest Anderson

1977, Open-File Report 77-483

Upper Ordovician and Silurian stratigraphy in Sequatchie Valley and parts of the adjacent valley and ridge, Tennessee

Robert C. Milici, Helmuth Wedow Jr.

1977, Professional Paper 996

Lithologic and geophysical logs of holes drilled in the Seminoe Dam SE and Pats Bottom quadrangles, Carbon County, Wyoming

L. F. Blanchard, Thomas J. Pike

1977, Open-File Report 77-119

Some observations that bear on the origin of porphyry copper deposits

Norman G. Banks, Norman J. Page

1977, Open-File Report 77-127

Magmatic behavior of Cu, S, Cl, F, and H₂O in igneous rocks associated with the Ray porphyry copper deposit, Arizona

Norman G. Banks

1977, Open-File Report 77-500

Geology of the Minturn 15-minute quadrangle, Eagle and Summit counties, Colorado

Ogden Linne Tweto, Thomas Seward Lovering

1977, Professional Paper 956

Density and porosity estimates from borehole gravity data in the Castle Pines #3, #2, and #1 water wells, Douglas County, Colorado

Keith A. Byerley, J. W. Schmoker

1977, Open-File Report 77-875

Borehole gravity surveys were carried out in the Castle Pines #3, #2, and #1 water wells using the U.S. Geological Survey-LaCoste and Romberg borehole gravity meter (McCulloh and others, 1967a; McCulloh and others, 1967b). The objectives were to estimate the density and porosity of the formations penetrated, and to determine...

Artificial recharge to a freshwater-sensitive brackish-water sand aquifer, Norfolk, Virginia

Donald L. Brown, William Dudley Silvey

1977, Professional Paper 939

Fresh water was injected into a brackish-water sand for storage and retrieval. The initial injection rate of 400 gpm decreased to 70 gpm during test 3. The specific capacity of the well decreased also, from 15.4 to 0.93 gpm. Current-meter surveys indicated uniform reduction in hydraulic conductivity of all contributing...