Southeast Alaska gravity base station network

Barnes, David F.

doi:10.3133/ofr7218

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…The difference plotted is for the station pair BL31 in Anchorage and CRDA at Cordova airport, but the symbols show which station pair was actually measured on that date and whose differences were later converted to the BL31-to-CRDA differences. The four-character station designations are those used in the USGS Alaskan gravity base station network reports (Barnes, 1968(Barnes, , 1972. From 1966 to the late 1980's, BL31 was the principal USGS gravity base at Anchorage airport where the gravity meter was read above USC&GS benchmark L31 at the base of a flagpole outside the post office.…”

Section: Cordova Gravity Changementioning

confidence: 99%

Lower Paleozoic deep-water facies of the Medfra area, central Alaska: A section in <i>Geologic studies in Alaska by the U.S. Geological Survey, 1997</i>

Dumoulin¹,

Bradley²,

Harris³

et al. 1999

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Cover. The Mint River is one of many drainages in the northwestern Seward Peninsula that provide surface runoff and sediment load into Lapp Lagoon and the Bering Sea. Recent geochemical studies (see article by Parnow and others, this volume) indicate that stream sediments collected from some drainages in this area contain anomalous concentrations of arsenic and tin, reflecting the presence of known tin-bearing granites and associated mineral deposits in this area. Although detrital arsenic and tin may be naturally entering the nearshore marine environment, the data suggest that solution transport of metals is extremely insignificant. This publication is also available online at: http://g ree nwood.c r.usgs.gov /pu b/ppa pers/p 1614/ Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government The eight papers that follow continue the series 1 of U.S. Geological Survey (USGS) reports on investigations in the geologic sciences in Alaska. The series presents new and sometimes preliminary findings that are of interest to earth scientists in academia, government, and industry; to land and resource managers; and to the general public. Reports presented in Geologic Studies in Alaska cover a broad spectrum of topics from all parts of the State ( fig. 1), which serves to emphasize the diversity of USGS efforts to meet the Nation's needs for earth-science information in Alaska. Library of Congress Cataloging-in-Publication DataThe papers in this volume are organized under the topics Resources, Geologic Framework, and Environment and Climate. Such an organization is intended to reflect the scope and objectives of USGS programs currently active in Alaska. Resource papers include one that presents detailed observations from a Mississippian Zn-Pb-Cu-Ag occurrence in the Brooks Range (Werdon). Mineralogic, chemical, and isotopic data provide the basis for a proposed relationship between this vein-breccia deposit and the shale-hosted massive sulfide deposit type, which includes the active Red Dog mine in the western Brooks Range. Also included under the topic of Resources is a paper that presents geochemical and isotopic data from the Greens Creek and Woewodski Island volcanogenic massive sulfide deposits in southeastern Alaska (Newberry and Brew). The depositional environment and sedimentological setting of Tertiary coal beds in the Matanuska and Susitna Valleys is the focus of a third paper under the topic of Resources (Flores and others).Geologic Framework studies provide background information that is the scientific basis for present and future studies of the environment, mineral and energy resources, paleoclimate, and hazards in Alaska. One paper presents the results of sedimentologic and paleontologic comparisons of lower Paleozoic, deep-water-facies rock units in central Alaska (Dumoulin and others). The authors show which of these units are likely to correlate with one another, suggest likely source regions, and provide a structural r...

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Section: Cordova Gravity Changementioning

confidence: 99%

Lower Paleozoic deep-water facies of the Medfra area, central Alaska: A section in <i>Geologic studies in Alaska by the U.S. Geological Survey, 1997</i>

Dumoulin¹,

Bradley²,

Harris³

et al. 1999

Professional Paper

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Land gravimetry

Strange¹

1975

Reviews of Geophysics

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Activities of the following U.S. government organizations are covered: National Geodetic Survey (NGS), U.S. Geological Survey (USGS), Air Force Cambridge Research Laboratories (AFCRL), Army Engineering Topographic Laboratory (ETL), and the various components of the Defense Mapping Agency (DMA). The DMA components covered include the DMA Topographic Center (DMATC), DMA Aerospace Center (DMAAC), DMAAC Geodetic Survey Squadron (DMAAC/GSS), DMA Inter‐American Geodetic Survey (IAGS), and the U.S. Navy Oceanographic Office (NAVOCEANO). In addition, activities of universities, state organizations, and private industry were covered when these were of special interest. However, no attempt was made to include all of the voluminous activities of all university and state groups. The bulk of the land gravity taken, after being adjusted to a common datum by the DMAAC, is placed in the U.S. Land Gravity Data Bank of the National Geodetic Survey of the National Oceanic and Atmospheric Administration (Washington, D.C.).

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Developments in Alaska in 1972

Harrison¹

1973

Bulletin

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Southeast Alaska gravity base station network

Cited by 3 publications

References 5 publications

Lower Paleozoic deep-water facies of the Medfra area, central Alaska: A section in <i>Geologic studies in Alaska by the U.S. Geological Survey, 1997</i>

Lower Paleozoic deep-water facies of the Medfra area, central Alaska: A section in <i>Geologic studies in Alaska by the U.S. Geological Survey, 1997</i>

Land gravimetry

Developments in Alaska in 1972

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