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The AAPG/Datapages Combined Publications Database

Showing 28,831 Results. Searched 196,763 documents.

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Some Principles and Techniques Used in Reconstructing the Hydraulic Parameters of a Paleo-Flow Regime

Alan V. Jopling

Journal of Sedimentary Research (SEPM)

..., or over a lobate front of a small delta. The merging of current filaments in a variable velocity field affords another example; strong vorticity...

1966

Seismic Exploration of the Val Verde Basin

Lorenz Shock

West Texas Geological Society

... where the surface material is of a rigid high-velocity nature. Such a surface tends to generate and sustain undesirable vibrations from the initiating...

1959

Effects of Biogenic Silica on Acoustic and Physical Properties of Clay-Rich Marine Sediments (1)

JANE S. TRIBBLE , FRED T. MACKENZIE , JOZSEF URMOS , DAVID K. O'BRIEN , and MURLI H. MANGHNANI

AAPG Bulletin

... in highly variable and, at times, inverse velocity-depth gradients. The diagenetic conversion of opal-A to opal-CT and finally to quartz...

1992

Orientation Studies of Waterlogged Wood: A Paleocurrent Indicator?

David I. M. Macdonald, Tim H. Jefferson

Journal of Sedimentary Research (SEPM)

... fragments appear to be current velocity, fragment shape and fragment size. BERTSBERGH, J. W. B., VAN, 1940, Richtungen der sedimentation in der rheinischen...

1985

Profiler-Sonobuoy Measurements in Colombia and Venezuela Basins, Caribbean Sea

William J. Ludwig , Robert E. Houtz , John I. Ewing

AAPG Bulletin

... that the material below B^Prime can contain large amounts of sediment unless the sediment has a velocity near that of basalt. The discontinuous reflectors...

1975

Refraction Shooting with Expendable Sonobuoys: GEOLOGICAL NOTES

J. Ewing , R. Leyden , M. Ewing

AAPG Bulletin

..., 1968, Velocity of deep-sea sediments from sonobuoy data: Jour. Geophys. Research, v. 73, p. 2615-2641. Le Pichon, X., J. Ewing, and R. E Houtz...

1969

Abstract: Interferometric Approach to Complete Refraction Statics Solution; #90187 (2014)

Valentina Khatchatrian and Mike Galbraith

Search and Discovery.com

... refraction data and to replace variable low velocity with the velocity below weathering to improve resolution of the seismic data. A data driven statistical...

2014

Geothermal Regime in the Western Canada Sedimentary Basin [Abstract]

Bachu, S., Burwash, R.A.

CSPG Bulletin

... less than the total heat flow. Past hydrogeological studies have shown that the permeability of the rocks and the velocity of formation waters are too...

1990

Abstract: Ground penetrating radar and seismic methods applied to detection of windows in the clay aquitard overlying the Fredericton Aquifer

J. A. Paasche, T. Gilman, K. E. Butler

Atlantic Geology

... that can be used to determine the subsurface features at a site. These methods utilize changes in material properties (e.g. density, velocity, dielectric...

2000

Abstract: Subsalt Interpretation and Visualization Techniques: Alaminos Canyon, Deep-Water Gulf of Mexico

Frank R. Love

GCAGS Transactions

... frontier and significant effort is being made to map these features and to improve seismic imaging through better velocity models. Variable subsalt...

2006

Scientific Objectives of Mohole, and Predicted Section: ABSTRACT

Harry H. Hess

AAPG Bulletin

..., or past isotherm, at which a reaction took place. Above the "crust" is a layer of variable thickness and seismic velocity thought...

1960

Exploring for Niagaran Pinnacle Reefs in Southern Michigan Basin: ABSTRACT

J. Labo, John Cousins

AAPG Bulletin

..., gravity data became unreliable owing to the presence of highly variable, surface glacial till. Initial efforts with single fold seismic were also...

1980

Differential Diffusion During Carbonate Diagenesis: ABSTRACT

Nicholas E. Pingitore, Jr.

AAPG Bulletin

... difference is the dominant variable and pore path plays a secondary role. Concentration differences between diagenetic site and aquifer may...

1980

Abstract: Two Prestack Anisotropic Depth Migration Methods for Tilted TI Media; #90211 (2015)

Xiang Du, John Bancroft, Don Lawton, and Larry Lines

Search and Discovery.com

... assumption for the relationship between anisotropic parameters and variable velocities, A-PSPI algorithms can handle an arbitrary distribution...

2015

Abstract: The Long and Short Solutions of Near-Surface Anomalies; #90286 (2017)

Ralph Bridle

Search and Discovery.com

... of the diverse surface topographies surmounting a variable geologic sub-surface. Modeling the near-surface depth/velocity diversity can be classified...

2017

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