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Page 5039, results 125951 - 125975

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Not all publications have extents, not all extents are completely accurate
Ground-water levels in selected well fields and in west-central Florida, September 1980
D. K. Yobbi, L. R. Mills, W. M. Woodham
1980, Open-File Report 81-77
The water table in the surficial aquifer and the potentiometric surface of the Floridan aquifer in a 1,200-square-mile area in west-central Florida are mapped semiannually by the U.S. Geological Survey. Maps are based on water levels measured in wells each May to coincide with seasonal low levels and each September...
Hydrology of Jumper Creek Canal basin, Sumter County, Florida
Warren Anderson
1980, Open-File Report 80-208
In 1960, floods caused extensive damage to agribusiness in Jumper Creek Canal basin. In 1962, a plan was developed for a proposed project to reduce the threat of floods. In 1976, a study of the hydrology of the basin was proposed to help evaluate this plan and to serve as...
Flood-prone area maps of three sites along the Trans-Alaska Pipeline, Alaska
Robert D. Lamke, Stanley H. Jones
1980, Open-File Report 80-209
The Bureau of Land Management requested on May 3, 1979 that the U.S. Geological Survey determine the base (100-year) flood-plain limits at three sites (fig. 1) along the Trans-Alaska Pipeline System Highway (Haul Road) between the Yukon River and Prudhoe Bay in order to issue land-use permits. The Alaska Department...
Map data catalog
Water Resources Division, U.S. Geological Survey
1980, Report
The National Cartographic Information Center (NCIC) is the information branch of the National Mapping Program, U.S. Geological Survey. NCIC's mission is to help users gain better, faster, low-cost access to the cartographic holdings of Federal, State, and private agencies. This catalog tells how to order a wide range of mapping byproducts...
Trends in the distribution of recent foraminifera in San Francisco Bay
R.E. Arnal, P. J. Quinterno, T. J. Conomos, Ralph Gram
1980, Cushman Foundation Special Publication (19) 17-39
Much of the bathymetry of the southern part of San Francisco Bay reflects the drainage pattern of late Pleistocene streams. Holocene estuarine silt and clay cover most of the bay floor; relict eolian and deltaic sand occurs along the eastern shore; sandy patches are present in the main channel owing...
Coastal ocean dynamics
J. Allen, R. Beardsley, W. Brown, D.A. Cacchione, R. Davis, C. Friehe, W. Grant, Adriana Huyer, J. Irish, M. Janopaul, A. Williams, Clinton D. Winant
1980, Eos, Transactions, American Geophysical Union (64) 538-540
The main objective of the Coastal Ocean Dynamics Experiment (CODE) is to observe and describe the response of continental shelf waters to strong atmospheric forcing in a relatively simple geomorphological setting. In order to achieve this goal, CODE has been designed (1) to define the different space and time scales...
Coincident sediment slump/clathrate complexes on the U.S. Atlantic continental slope
George B. Carpenter
1980, Geo-Marine Letters (1) 29-32
High-resolution seismic reflection data recorded on the continental slope off the east coast of the United States have revealed instances of sediment mass movement (slumps) which appear to occur above clathrate accumulations. The slumping is believed to be related to the liberation of free gas by clathrate decomposition and consequent...
A survey of image processing developments in support of remote sensing
Brian P. Bauer
1980, Report
New algorithm developments for image processing (IP) will occur throughout the 1980's, resulting from evolution in computer hardware and sensors as well as continuing research. This report will describe the areas of algorithm development that are occurring in applications, research, and operational environments. Included is an overview of image processing...
Coastal zone studies: A holistic approach
James B. Johnston, Martha W. Young, Carolyn O. French
1980, Conference Paper, Balancing natural resources allocations : Transactions of the forty-fifth North American wildlife and natural resources conference
No abstract available....
New evidence for the age of the Quantico Formation of Virginia
Louis Pavlides, J. Pojeta Jr., M. Gordon Jr., R.L. Parsley, A.R. Bobyarchick
1980, Geology (8) 286-290
A new fossil locality within the Quantico Formation of the Virginia Piedmont in Dale City, Virginia, about 40 km south of Washington, D.C., has yielded crinoids and a cephalopod that re-establishes an age younger than Cambrian for this formation. On the basis of regional considerations and the work of investigators...
Composition and origin of phosphorite deposits of the Blake Plateau
Frank T. Manheim, R. M. Pratt, P.F. McFarlin
1980, Conference Paper, Marine phosphorites - Geochemistry, occurrence, genesis : Symposium at the 10th international congress on sedimentology, Jerusalem, July 1978, proceedings
An area of about 22 000 km2 on the N Blake Plateau contains an estimated 2 billion tonnes of phosphorite concretions, and about 1.2 billion tonnes of mixed ferromanganese-phosphorite pavement. The phosphorite consists primarily of carbonate-fluorapatite, some calcite, minor quartz and other minerals. Drilling and other evidence show that the phosphorite...
Neogene diatoms from Petersburg, Virginia
George W. Andrews
1980, Micropaleontology (26) 17-48
Sixty-two diatom taxa have been identified from a diatomaceous sandy clay that crops out near the outlet of Wilcox Lake, Petersburg. Virginia. These diatoms are mostly cosmopolitan marine forms, but some species suggest deposition in brackish water that had a freshwater inflow. The regional stratigraphy, as well as the pelecypods...