摘要:

Members of the Geophysical Research Group at Oregon State University have made 225 gravity measurements at key locations in an effort to establish six gravity lines extending eastward from the Oregon coast to beyond the Cascade Mountains. George P. Woollard provided an additional 1785 measurements, and Standard Oil Company of California provided 2900 measurements. The six gravity lines are nearly completed, but some individual stations and ties betwreen stations remain to be checked.A network of 31 gravity base stations has been joined together in Oregon. The base stations are used as gravity control points in the state.

ISSN:0002-8606    

DOI:10.1029/TR046i001p00222

年代:1965

数据来源: WILEY

摘要:

The California Division of Mines and Geology gravity program includes several local and regional surveys, the compilation of data for the preparation of gravity maps of the state, and the establishment of a statewide network of base stations. The regional surveys, which either are related to geologic mapping programs or are studies of particular mineral commodities, include projects in the following five areas:1. The Ione basin area in western Amador and Sacramento counties in the Sierra Nevada foothill belt. This survey is related to a study of commercial deposits of clay, sand, and lignite.2. The Clear Lake‐Geysers area, in Lake, Mendocino, and Sonoma counties, north of San Francisco. This survey is a part of a study of Quaternary structures, volcanism, and occurrences of natural steam in the northern Coast Ranges.3. Bridgeport Valley and Bodie Hills, including the Bodie and Masonic mining districts, in Mono County, north of Mono Lake.4. The Shoshone‐Tecopa area in Inyo and San Bernardino counties. This survey is a study of basin and range structures in this part of the Mojave Desert.5. The south San Francisco Bay area. This is a cooperative study of subsurface structure conducted for the California Department of Water Resour

ISSN:0002-8606    

DOI:10.1029/TR046i001p00223-2

年代:1965

数据来源: WILEY

摘要:

The area studied includes 40,000 square miles of the western part of southern California. Observations were also made on several offshore islands. The study includes the following natural provinces: the southern coast ranges, the southern San Joaquin Valley, the southern Sierra Nevada, the western Mojave Desert, the transverse ranges, the peninsular ranges, and the Western Colorado desert.There were 428 new gravity observations made, including 18 on the offshore islands. Values published by other workers in the area and approximately 500 unpublished oil company observations have also been compiled.

ISSN:0002-8606    

DOI:10.1029/TR046i001p00224

年代:1965

数据来源: WILEY

摘要:

The Hawaii Institute of Geophysics is currently engaged in three gravity programs in the Pacific area, a study of the Hawaiian Ridge, the Solomon Islands, and Samoa. The Institute is also participating in the Air Force Cambridge Research Center sponsored international pendulum gravity standardisation program. In two cases the Institute gravity program forms part of a broader program that is being shared by other agencies. On the Hawaiian Ridge the collaborating agencies are the U. S. Geological Survey and the U. S. Coast and Geodetic Survey. In the Solomon Island area, they are the Solomon Island Geological Survey, the University of Wisconsin, the University of Queensland, and the Army Map Service (Far East).

ISSN:0002-8606    

DOI:10.1029/TR046i001p00225

年代:1965

数据来源: WILEY

摘要:

Most of the gravity surveys by the U. S. Geological Survey in Arizona, Colorado, New Mexico, and Utah have been conducted in support of programs of regional geophysical investigations, geologic mapping, and water resource investigations initiated by the Geological Survey. Gravity data have also been obtained through cooperative programs with other Federal agencies, especially the Atomic Energy Commission, Bureau of Reclamation, and Advanced Research Projects Agency. Techniques of collection and reduction of the gravity data are similar to those described byOliver[1965] elsewhere in this symposium. Areas of published gravity coverage are shown in Figure 1 and are numerically keyed to the References. Areas of unpublished gravity coverage are listed in Table 1.

ISSN:0002-8606    

DOI:10.1029/TR046i001p00227

年代:1965

数据来源: WILEY

摘要:

The U. S. Geological Survey began gravity surveys in Alaska in 1958. About 700 observations were made along the highways and on the shores of major lakes in the area covered by the Copper River aeromagnetic survey. During the following years the gravity measurements were extended to include parts of the Alaska Range and Tanana Valley, and they have gradually evolved into a program designed to prepare a reconnaissance gravity map of the whole state within the next five years.Before the surveys began, published data from gravity surveys in Alaska consisted of records from (1) about 6000 stations obtained in a 26,000‐square‐mile area of northern Alaska, Naval Petroleum Reserve 4, by the U. S. Navy and by United Geophysical Corporation [Woolson, 1962]; (2) about 500 widely scattered stations observed by members of the University of Wisconsin [Thiel et al., 1958;Woollard et al., 1960]; (3) a few traverses near Prince William Sound by the Carnegie Institution of Washington [Tatel, 1956]; and (4) some control stations established by the U. S. Coast and Geodetic Survey [Rice, 1958]. Petroleum companies had already made surveys (unpublished) of the Bethel basin, Nushagak basin, Cook Inlet basin, Yakataga geosyncline, and some other possible petroleum ar

ISSN:0002-8606    

DOI:10.1029/TR046i001p00231

年代:1965

数据来源: WILEY

摘要:

Since July 1961 the Geophysical and Polar Research Center, University of Wisconsin, has been maintaining a program of gravity and magnetic observations from ice island Arlis 2. These data suggest that the consolidated ocean floor is covered by low‐density turbidity flows from off the continental slope. The turbidite veneer appears to thin away from the continental shelf. The gravity profiles seem to better reflect the surface topography of underlying consolidated material than the surface of the ocean bottom unconsolidated sediment

ISSN:0002-8606    

DOI:10.1029/TR046i001p00233

年代:1965

数据来源: WILEY

摘要:

At last it has happened! Here is a symposium with so many authors that only to list their names and the titles of their 61 articles would take more space than this journal normally allows for a whole review. One must admire the courage of the editors to tackle the job of getting such a mountain of material into print. The papers were presented at an international conference at Rice University in April 1963, as a part of the observances of Rice University's 50th anniversary, and they cover a multitude of aspects of environmental radioactivity. The papers are divided into three roughly equal parts: Sources, Techniques, and Measurements.

ISSN:0002-8606    

DOI:10.1029/TR046i001p00234

年代:1965

数据来源: WILEY

摘要:

Amstutz, G. C. (Ed.),Developments in Sedimeniology, vol. 2, Sedimentology and Ore Genesis, Proceedings of a Symposium held during the Sixth International Sedimentological Congress 1963, Delft, Holland, Elsevier Publishing Co., New York, London, and Amsterdam, 185 pp., 1964, $10.00.An International Directory of OceanographersNational Academy of Sciences‐National Research Council, Washington, D. C., 273 pp., 1964, $2.00 (available from NAS‐NRC Printing and Publishing Office, 2101 Constitution Avenue, N.W., Washington, D. C. 204

ISSN:0002-8606    

DOI:10.1029/TR046i001p00239

年代:1965

数据来源: WILEY

摘要:

The annual meeting of the Southeastern Section of the Geological Society of America is being jointly sponsored by Vanderbilt University and the Tennessee Department of Conservation, Division of Geology. Technical sessions will be held April 8 and 9. A pre‐convention field trip to Sequatchie Valley will be held April 7; field trips to Wells Creek Basin and to Central Tennessee will be conducted April 10. For details write J. Thomas Wilcox, Box 1805 —Station B, Vanderbilt University, Nashville, Tennessee.The second annual Oil Shale Symposium at the Colorado School of Mines, previously scheduled for April 29 and 30, will beheld on April 22 and 23, 1965. The symposium will cover technical, economic, and political aspects of oil shale developm

ISSN:0002-8606    

DOI:10.1029/TR046i001p00254

年代:1965

数据来源: WILEY