NOAA scientist explains shatter cone formation
Carl A. Posey, editor(s)
1972, Earthquake Information Bulletin (USGS) (4) 16-17
NEIC opens in Boulder
Carl A. Posey, editor(s)
1972, Earthquake Information Bulletin (USGS) (4) 12-15
Significant earthquakes of 1971
Carl A. Posey, editor(s)
1972, Earthquake Information Bulletin (USGS) (4) 12-15
The search for maximum magnitude
David M. Perkins
Carl A. Posey, editor(s)
1972, Earthquake Information Bulletin (USGS) (4) 18-22
Earthquakes: September-October 1971
Carl A. Posey, editor(s)
1972, Earthquake Information Bulletin (USGS) (4) 28-29
Radiochemical monitoring of water after the Cannikin event, Amchitka Island, Alaska, January 13-April 5 , 1972
L.J. Schroder, Wilbur C. Ballance
1972, Report
The U.S. Geological Survey collected 110 water samples from Amchitka Island, Alaska, between January 13 and April 5, 1972. Tritium determinations were made on all samples collected and gross alpha and gross beta/gamma determinations were made on 92 samples. The gross alpha and gross beta determinations when compared with previously...
Trends in ground-water levels in Wisconsin, 1967-1971
Robert M. Erickson
1972, Wisconsin Geological & Natural History Survey Information Circular 21
This report supplements the Wisconsin Geological and Natural History Survey, Information Circular No.9, "Trends in Ground-Water Levels in Wisconsin through 1966". It describes, by hydrographs, the ground-water level trends in Wisconsin for the period 1967-1971. All current observation wells with more than three years of record are included; records of...
Ground-water quality in Wisconsin through 1972
E.L. Skinner, C. L. R. Holt Jr.
1972, Wisconsin Geological & Natural History Survey Information Circular 22
Ground water, a plentiful and largely underdeveloped resource of Wisconsin, has good to excellent chemical quality in most places. This resource is readily available in most parts of the State for municipal, industrial, and rural uses. In 1970, about 0.5 billion gallons of ground water a day was pumped in...
Water resources of Lehigh County, Pennsylvania
Charles R. Wood, Herbert N. Flippo Jr., Joseph B. Lescinsky, James L. Barker
1972, Water Resource Report 31
Lehigh County occupies an area of 347 square miles in southeastern Pennsylvania. The northern part of Lehigh County is underlain by the Martinsburg Formation, which consists chiefly of shale and slate. The central part of the county, where most of the population centers are located and much of the urbanization...
Hydrology of the Martinsburg Formation in Lehigh and Northampton Counties, Pennsylvania
Charles W. Poth
1972, Water Resource Report 30
The Martinsburg Formation underlies the northern half of Lehigh and Northampton Counties, and is of Middle and LateOrdovician age. It is bounded on the south by older Ordovician limestone formations and on the north by a ridge-forming conglomerate of Silurian age. Recent mapping has supported a three-part division of the...
Evaporite deposits of Bogota area, Cordillera Oriental, Colombia
Donald H. McLaughlin Jr.
1972, American Association of Petroleum Geologists Bulletin (56) 2240-2259
Four evaporite-bearing stratigraphic zones are known in Cretaceous strata of the Cordillera Oriental of Colombia north and east of Bogota. The easternmost and oldest zone is probably of Berriasian to Valanginian age. The next oldest is probably late Barremian to early Aptian in age. The third appears to be Aptian....
Distribution of copper and other metals in gully sediments of part of Okanogan County, Washington
Kenneth F. Fox Jr., C. Dean Rinehart
1972, Bulletin 65
A geochemical exploration program aimed at determining regional patterns of metal distribution as well as pinpointing areas likely to contain undiscovered ore deposits was carried out in north-central Okanogan County, Washington. About 1,000 gully and stream sediment samples were collected from a rectangular area of about 800 square miles. The...
Geology and mineral deposits of the Loomis quadrangle, Okanogan County, Washington
C.D. Rinehart, K. F. Fox Jr.
1972, Bulletin 64
Hydrochemical study of the National Reactor Testing Station, Idaho
Robert Schoen
1972, Conference Paper, Hydrogeology: section 11 of the 24th International Geological Congress, Montreal 1972
Orbital-science investigation: Part C: photogrammetry of Apollo 15 photography
Sherman S.C. Wu, Francis J. Schafer, Raymond Jordan, Gary M. Nakata, James L. Derick
1972, Book chapter, Apollo 15 preliminary science report (NASA SP-289)
Mapping of large areas of the Moon by photogrammetric methods was not seriously considered until the Apollo 15 mission. In this mission, a mapping camera system and a 61-cm optical-bar high-resolution panoramic camera, as well as a laser altimeter, were used. The mapping camera system comprises a 7.6-cm metric terrain...
Orbital-science investigation: Part H: sketch map of the region around the candidate Littrow Apollo landing sites
M. H. Carr
1972, Book chapter, Apollo 15 preliminary science report (NASA SP-289)
The photograph in figure 25-59 and the corresponding map (fig. 25-60) show the geology of part of the lunar surface just east of the Littrow rilles at the eastern edge of Mare Serenitatis. The most striking feature of the region is the extremely low albedo of the area mapped as...
Preliminary geologic investigation of the Apollo 16 landing site
W.R. Muehlberger, R. M. Batson, E. L. Boudette, C.M. Duke, R. E. Eggleton, D. P. Elston, A. W. England, V. L. Freeman, M. H. Hait, T.A. Hall, J.W. Head, C. A. Hodges, H. E. Holt, E.D. Jackson, J.A. Jordan, K.B. Larson, D.J. Milton, V. S. Reed, J. J. Rennilson, G. G. Schaber, J.P. Schafer, L. T. Silver, D. Stuart-Alexander, R. L. Sutton, G.A. Swann, R.L. Tyner, G. E. Ulrich, H. G. Wilshire, E.W. Wolfe, J.W. Young
1972, Book chapter, Apollo 16 preliminary science report (NASA SP 315)
The Apollo 16 landing site in the lunar central highlands encompassed terra plains and adjacent mountainous areas of hilly and furrowed terra. These morphologic units, representing important terrane types in the lunar highlands, had been interpreted as volcanic on most premission geologic maps. However, it became apparent during the mission...
Orbital-science investigation: Part G: lineaments that are artifacts of lighting
Keith A. Howard, Bradley R. Larsen
1972, Book chapter, Apollo 15 preliminary science report (NASA SP-289)
Many Apollo 15 orbital photographs, particularly those taken at low Sun-elevation angles, reveal grid patterns of lineaments. In some circumstances, the grid pattern is present in areas where structural control seems unlikely. For example, in an oblique view (fig. 25-52), the ejecta blankets of two fresh impact craters seem to...
Ground-water conditions in the central Virgin River basin, Utah
R.M. Cordova, G. W. Sandberg, Wilson McConkie
1972, Technical Publication 40
Water-rights problems have occurred in the central Virgin River basin and are expected to increase as development of the water resources increases. The Utah State Engineer needs a basic knowledge of ground-water conditions and of the relation of ground water to surface water as a first step to understanding and...
Principal facts for gravity stations in the Bearpaw Mountains and vicinity, Montana
Donald L. Peterson, William L. Rambo
1972, Report
Observed gravity values, station locations, terrain corrections, and Bouguer gravity data are provided in tabular form for approximately 500 gravity observations in north-central Montana. These data were used in preparation of -- Peterson, Donald L. and Rambo, William L., 1967, Bouguer gravity anomaly map of the Bearpaw Mountains and vicinity,...
Photogeology: Part F: reinterpretations of the northern Nectaris Basin
Don E. Wilhelms
1972, Book chapter, Apollo 16 preliminary science report (NASA SP 315)
Geologic units of the Nectaris Basin rim have been interpreted as partly impact and partly volcanic in origin (refs. 29-4, 29-21, 29-35, 29-38, and 29-39). An exclusively volcanic origin was proposed for the material in the vicinity of the Apollo 16 landing site, slightly northwest of the Nectaris Basin (ref....
Photogeology: Part A: relative ages of some near-side and far-side terra plains based on Apollo 16 metric photography
Laurence A. Soderblom, Joseph M. Boyce
1972, Book chapter, Apollo 16 preliminary science report (NASA SP 315)
The materials of most light or terra plains predate the lunar maria and postdate the Imbrian event. In the vicinity of the Imbrium Basin, these materials have been called the Cayley Formation (ref. 29-3) but because of the subtle diversity of the terra plains over the near side, Whilhelms and...
Preliminary geologic investigation of the Apollo 15 landing site
G.A. Swann, N. G. Bailey, R. M. Batson, V. L. Freeman, M. H. Hait, J.W. Head, H. E. Holt, K. A. Howard, J.B. Irwin, K.B. Larson, W.R. Muehlberger, V. S. Reed, J. J. Rennilson, G. G. Schaber, D.R. Scott, L. T. Silver, R. L. Sutton, G. E. Ulrich, H. G. Wilshire, E.W. Wolfe
1972, Book chapter, Apollo 15 preliminary science report (NASA SP-289)
The Apollo 15 lunar module (LM) landed at longitude 03°39'20'' E, latitude 26°26'00'' N on the mare surface of Palus Putredinis on the eastern edge of the Imbrium Basin. The site is between the Apennine Mountain front and Hadley Rille. The objectives of the mission, in order of decreasing priority,...
Principal facts for gravity stations in Sulphur Springs Valley, Arizona
Donald L. Peterson
1972, Report
Observed gravity values, station locations, terrain corrections, and Bouguer gravity data are provided in tabular form for approximately 410 gravity observations in Sulphur Springs Valley, Arizona....
Orbital-science investigation: Part F: regional geology of Hadley Rille
Keith A. Howard, James W. Head
1972, Book chapter, Apollo 15 preliminary science report (NASA SP-289)
Study of the sinuous Hadley Rille (fig. 25-45) was a primary goal of the Apollo 15 mission. Local geology of the rille near the landing site is described in section 5 of this report. Preliminary study of orbital photography from Hasselblad, metric, and panoramic cameras makes possible a description of...