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The AAPG/Datapages Combined Publications Database

Showing 17,474 Results. Searched 200,691 documents.

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AVO Analysis for Direct Hydrocarbon Detection in Field X in the Persian Gulf (Paper 5)

Mohammad Ali Riahi, Mohammad Emami Niri

Geological Society of Malaysia (GSM)

..., the linear regression analysis is applied to real data to determine the P-wave reflection coefficient (Rp) and Gradient (G) attributes for the seismic events...

2006

Abstract: Assessment of Shuttle Radar Topographic (SRTM) Elevation Data of Lojing and Hulu Langat, Peninsular Malaysia (Poster 6 (PS6))

Ng Tham Fatt

Geological Society of Malaysia (GSM)

... and terrains with slope gradient less than 10° compared to hilly terrains and terrains with slope gradient greater than 10°. The derived SRTM slope...

2007

Problems of Oil and Gas: Depth Zonality of Catagenesis in West Siberia, p. 11-13

A. N. Fomin, D. A. Dochkin

Petroleum Geology: A Digest of Russian Literature

... (gradient) of this change is variable by area in the basin. Four areas with different depth zonality of catagenesis are recognized: Yamal, Nadym-Pur, Pur...

2001

Bryozoan Ecology and Sedimentary Environments in Central Appalachian Upper Ordovician: ABSTRACT

Peter W. Bretsky

AAPG Bulletin

.... Generic diversity along the central Appalachian Upper Ordovician shoreline shows a sharp gradient from low diversity in the north to high diversity...

1968

Paleochannels: ABSTRACT

S. A. Schumm

AAPG Bulletin

...Paleochannels: ABSTRACT S. A. Schumm 1969 741 741 53 3. (March) The width (w), depth (d), meander wavelength (l), gradient (s), shape (w/d...

1969

Response of Streams to Structural Uplift: ABSTRACT

L. H. Lattman

AAPG Bulletin

... in lithology or in tributary streams. Decreases in gradient (such as upstream from a structure) result in increased channel width-depth ratio and increases...

1972

Depositional and Directional Features of Braided-Meandering Stream: ABSTRACT

J. W. Shelton, R. L. Noble, H. R. Burman, Jr.

AAPG Bulletin

.... (September) The Cimarron River in north-central Oklahoma shows characteristics intermediate between typical braided and meandering streams. The gradient...

1973

Vitrinite Reflectance--What, How, and Why?: ABSTRACT

Wallace G. Dow, Dolores I. O'Connor

AAPG Bulletin

...) of a sample can be determined. A sequence of Ro values in a well or exposed sedimentary section results in a maturation gradient, the slope of which...

1979

Movement of Subsurface Waters Under Sabkha, Abu Dhabi, United Arab Emirates, and Its Relation to Dolomite Genesis: ABSTRACT

Judith Ann McKenzie, Kenneth J. Hsu, Jean Schneider

AAPG Bulletin

... and induce Darcy flow under a vertical hydraulic gradient of evaporative pumping, that is, upward movement of water through the saturated zone to replace...

1979

Deduction of Past Geothermal Gradients in Neogene Siliceous Rocks in Circum-Pacific Region: ABSTRACT

Kenneth A. Pisciotto

AAPG Bulletin

... and base of the opal-CT zone as approximate isotherms, the past geothermal gradient for any area equals the difference between these isotherms divided...

1979

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

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