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The AAPG/Datapages Combined Publications Database

Showing 16,781 Results. Searched 196,121 documents.

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Deposition and Early Hydrologic Evolution of Westwater Canyon Wet Alluvial-Fan System: ABSTRACT

W. E. Galloway

AAPG Bulletin

...) The Westwater Canyon Member is one of several large, low-gradient alluvial fans that comprise the Morrison Formation in the Four Corners area. Morrison fans were...

1979

Mauch Chunk Alluvial Plain and Mud-Flat Sediments in Northern West Virginia: ABSTRACT

Mark W. Presley

AAPG Bulletin

... position reflects a gradient change from what were higher elevations on the east onto more level and tectonically stable areas of northwestern West...

1979

Shale Mineralogy of General Crude Oil and Department of Energy 1 Pleasant Bayou Geopressured-Geothermal Test Well, Brazoria County, Texas: ABSTRACT

Robert L. Freed

AAPG Bulletin

... clay in shallow samples and 70% in deeper samples. The top of the geopressured zone, occurring at a pore fluid pressure gradient of 0.465 psi/ft...

1980

Oxidation-Reduction in Oakville Sandstone of South Texas--Implications for Uranium Mineralization: ABSTRACT

Christopher D. Henry, William E. Galloway, Gary E. Smith

AAPG Bulletin

... superimposed reducing, sulfidic conditions on an otherwise normal Eh gradient or (2) where a sharp Eh gradient separates highly permeable oxidized...

1980

Coal Rank in Part of Western Kentucky Coalfield: ABSTRACT

James C. Hower, Zhicong Gong

AAPG Bulletin

.... Coals in a bore hole in a graben of the Rough Creek complex (Bordley quadrangle, Union County) display a variable rank gradient. Rank increases from...

1980

Deep-Sea Oxygen Isotope Record and Sea Level Fluctuations: ABSTRACT

Robert Douglas, Samuel Savin

AAPG Bulletin

... covered more than 50 × 106 sq km which maximized heat storage in the ocean. The planetary thermal gradient was low, with polar regions producing warm...

1981

Abnormally High-Pressured, Low-Permeability, Upper Cretaceous and Tertiary Gas Reservoirs, Northern Green River Basin, Wyoming: ABSTRACT

Ben E. Law, Charles W. Spencer

AAPG Bulletin

...: the generation of gas in low-permeability rocks. Pressure gradients in these wells exceed 0.8 psi/ft (18.1 kPa/m) and a maximum gradient of more than 0.9 psi/ft...

1981

Overview of Geothermal Exploration on Western Slopes of Mt. Hood, Oregon: ABSTRACT

H. Jack Meyer, John W. Hook

AAPG Bulletin

... stratigraphic, structural, and hydrologic information, as well as to establish the geothermal gradient. The initial 564-m observation well in the Old Maid Flat...

1981

Global Atmospheric Circulation in Mesozoic and Cenozoic: ABSTRACT

Judith Totman Parrish

AAPG Bulletin

... of paleogeography alone is qualitative and necessitates some assumptions about certain parameters, e.g., the equator-to-poles temperature gradient. However...

1981

Holocene Tepees and Stromatolites from Southern Australia and Their Paleohydrologic Significance: ABSTRACT

John Warren

AAPG Bulletin

... the hydraulic gradient between the dune and the salina is steep; meteoric-influenced ground water seeps into the salina margin. Waters driven...

1981

Exploration Applications of Temperatures Recorded on Log Headings: Theory, Data Analysis, and Examples: ABSTRACT

Stanton M. Ball

AAPG Bulletin

... gradient values; (2) creation of a geothermal gradient field areally; (3) vector analysis or contouring of created data; and (4) anomaly definition...

1981

Geotemperatures of North Sea Basins: Implications to Exploration: ABSTRACT

H. Carstens, B. Jepsen

AAPG Bulletin

... to the world average of 25°C/km. An updated, regional, present-day geothermal gradient map End_Page 1359------------------------------ of the whole North...

1981

Geothermal Energy Resources in Mid-Continent: ABSTRACT

Don W. Steeples

AAPG Bulletin

... geothermal gradient and heat flow measurements, but also includes programs in gravity, aeromagnetics, and geochemistry. This program will not discover any...

1981

Diagenesis and Secondary Porosity in Vicksburg Sandstones, McAllen Ranch Field, Hidalgo County, Texas: ABSTRACT

Marcia J. Klass, David G. Kersey, Robert R. Berg

AAPG Bulletin

...% to as much as 20% in the section from 9,642 to 12,586 ft (2,939 to 3,836 m). This increase is related to the abnormally high pressure gradient...

1981

Predication of Organic Maturation Levels: Scotian Shelf: ABSTRACT

D. R. Issler

AAPG Bulletin

... gradient of 2.66°C/100 m; correlation coefficient 0.97. A geothermal gradient map constructed from the corrected data shows that areas of thicker...

1982

Petroleum Origin: Heavy Rains, River Plume, Ocean Stratification: ABSTRACT

Martine Rossignol-Strick

AAPG Bulletin

... climates, even at high latitudes, were very rainy. The tropics had a monsoon and a dry season. The small hemispheric temperature gradient weakened...

1982

Stratigraphic Distribution of Hydrocarbons with Differing API Gravities in East Texas Basin: ABSTRACT

Rob Conti

AAPG Bulletin

... from sub-Clarksville reservoirs, showing the best-delineated high API-gravity gradient, represents one main trend. The oils from Woodbine and Paluxy...

1982

Carbonate Facies Patterns and Oil Shale Genesis in Eocene Green River Formation, Fossil Basin, Wyoming: ABSTRACT

H. Paul Buchheim

AAPG Bulletin

.... The "transgression-regression" of the hypolimnion over large areas of lake bottom was possible because of a low topographic gradient on the lake bottom...

1983

Experimental Low-Altitude Aeromagnetic Reconnaissance for Petroleum in Arctic National Wildlife Refuge, Alaska, Using Horizontal Gradients--A Progress Report: ABSTRACT

Terrence J. Donovan, John D. Hendricks, Alan A. Roberts, Patricia T. Eliason

AAPG Bulletin

... of the resultant horizontal gradient vector relative to the flight path. This calculation provides data for the unmeasured area between adjacent flight lines...

1983

Palo Duro Basin, An Exploration Frontier in the Texas Panhandle: ABSTRACT

Shirley P. Dutton

AAPG Bulletin

... for hydrocarbon production in the basin. The current geothermal gradient is relatively low, 1.1°F/100 ft (20°C/km), and it apparently has not been...

1983

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