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The AAPG/Datapages Combined Publications Database
Showing 8,089 Results. Searched 200,599 documents.
Seismic Stratigraphy of the Summit Basins of the New Hebrides Island Arc
Michael A. Fisher, David A. Falvey, Gregory L. Smith
Circum Pacific Council Publications
... dee p rocks . I n mos t areas , near-surface volcani c rock s produc e shar p magneti c anomalies. The attenuatio n o f hig h frequencie s i s no t du e...
1988
Abstract: Accurate Modeling of AEM Data for Oil and Gas Exploration in Semi-layered Environments; #90172 (2014)
A. Viezzoli, Anders V. Christiansen, Esben Auken
Search and Discovery.com
... on earlier gates, used by systems that aim at recovering near surface information. This means that an inaccurate description and modeling of the filters...
2014
Current Trends in Geophysics
H. E. Stommel, J. M. Graul
Indonesian Petroleum Association
... by elevation and velocity differences in the near surface. A summation without correction of this problem would lead to an attenuated group output trace...
1978
Sedimentology and Stratigraphy of Tidal Sand Ridges Southwest Florida Inner Shelf
Richard A. Davis, Jr., Jonathan Klay , Pliny Jewell, IV
Journal of Sedimentary Research (SEPM)
... of 2 to 3 m (Fig. 9) but may be replaced landward at or near the surface by the muddy sand facies. The quartz sand facies was found to pinch out away...
1993
Re-Evaluating the Florida Basement
Russell A. Wicker , Douglas L. Smith
GCAGS Transactions
... basement and sedimentary configurations for the entire peninsula. The final models display the low density (1.95 - 2.1 5 gm/cm3) near-surface rocks...
1978
Geology of Cancun, Quintana Roo, Mexico
Wm. G. Thorsen
West Texas Geological Society
... by indigenous biota. Mg calcaite of the near-surface sediment is mainly derived from breakdown of Melobesia which heavily encrusts Thalassia...
1979
Alluvial Fan Deposits
Tor H. Nilsen
AAPG Special Volumes
... and causes of channel trenching in western Fresno County, California: Am. Jour. Sci., v. 262, p. 249-258. Bull, W. B., 1964c, Alluvial fans and near-surface...
1982
Evaluation of a Conceptual Model for the Transverse Sediment Transport System of a Coastal Barrier Chain, Middle Atlantic Bight
Gerald L. Shideler
Journal of Sedimentary Research (SEPM)
... of the more limited competence of near-surface winds, relative to the swash-backwash regime that deposited the parent berm population. In addition, selective...
1973
Factors Controlling Peat Compaction in Alluvial Floodplains: A Case Study in the Cold-Temperate Cumberland Marshes, Canada
Sanneke van Asselen, Esther Stouthamer, Norman D. Smith
Journal of Sedimentary Research (SEPM)
... and consists largely of water (approximately 90% for uncompacted peat). Furthermore, in our study sites the water table is at or near the surface during...
2010
Extended Abstract: Comparison of Methods for Reconstructing the Erosion and Thermal History in the Maverick Basin, South Texas, Using Vitrinite Reflectance, Bottom-Hole Temperature, and Well Log Data
William H. Craddock, Marc L. Buursink, Paul C. Hackley
GCAGS Transactions
... anomalous, high thermal maturity near the surface in the Maverick Basin area in South Texas. Vitrinite reflectance values near the surface are about 0.5...
2017
Saskatchewan Exploratory Progress and Problems: Oil and Gas Occurrences
Robert A. Bishop
AAPG Special Volumes
... in the interpretation of seismic results are as follows. 1. Extremely low near-surface velocity layer (800 to 1,200 ft/sec) 2. Deep and highly varying low-velocity...
1954
A Novel Casing Antenna System for Crosswell Electromagnetic Telemetry in Pad Drilling
Shubin Zeng, Qiuzhao Dong, Jiefu Chen
Unconventional Resources Technology Conference (URTEC)
... of the receiving well and a point near the surface, instead of measuring potential differences between two locations on the surface as with conventional...
2017
Distributional Trends in the Recent Marine Sediments of Northern Baffin Bay
Alan C. Grant
Atlantic Geology
... this zone of movement. Considering the indicated velocities of surface currents (Fig. 3) as the extreme upper limit of current velocities at depth...
1971
Detailed Oriented Seismic Processing Leads to More Accurate Elastic Attribute Results in the Delaware Basin
Marianne Rauch-Davies, Steve Smith, Alyona Bashkirtseva Hall
Unconventional Resources Technology Conference (URTEC)
.... Amplitude imbalance in the study area was severe due to rapidly varying near surface conditions. As discussed above, robust amplitude balance was achieved...
2017
Stratigraphy and Petrology of the Morrison Formation (Jurassic) of the Canon City, Colorado, Area
Lawrence L. Brady
Journal of Sedimentary Research (SEPM)
... the formation of montmorillonite. Schultz (1963, p. 9) describes the alteration of volcanic glass as occurring rapidly under near surface conditions...
1969
Eocene Paleoseismic Record of the Green River Formation, Fossil Basin, Wyoming, U.S.A.: Implications of Synsedimentary Deformation Structures In Lacustrine Carbonate Mudstones
Balázs Törő, Brian R. Pratt
Journal of Sedimentary Research (SEPM)
.... Irregular rudstone deposits on the top of deformed layers reflect near-surface deformation and might represent redeposition of resuspended or elutriated...
2015
Differential Compacting the Cause of Certain Claiborne Dips
L. P. Teas
AAPG Bulletin
... in sand as well as clay in varying proportions. Ordinarily the sand would be deposited in the lakes near the stream mouths in irregular bars...
1923
Quarternary Depositional History and Potential Sand and Gravel Resources of the Alaskan Continental Margins
Peter H. Stauffer
Circum Pacific Council Publications
... by the Beringian continental slope to form the Bering slope current (Kinder, 1981). Velocities of surface currents reach 100 to 200 cm/sec in and near Bering...
1987
Geologic Framework of the Alaskan Continental Terrace in the Chukchi and Beaufort Seas
Arthur Grantz, Mark L. Holmes, Bruce A. Kososki
CSPG Special Publications
... Basin increase progressively from 3.5 to 3.9 km/sec at Herald Arch to 5.2 km/sec near Seward Peninsula. These velocities, together with the character...
1975
Geologic Interpretation of Thrust Belts
R. C. Crane
Pacific Section SEPM
... cut up-section toward the rear of a thrust belt, they are gravity-glide sheets. 78. Cascading folds indicate near-surface development where...
1987
Documenting the geometry and magnitude of shortening at the Allegheny Front: Lycoming County, Pennsylvania, United States
Ashley Ace, Nadine McQuarrie, Peter B. Sak, Robert Grundy, and Barrett Lavergne
AAPG Bulletin
... geometries with near-surface seismic reflectors. We incorporated mapped stratigraphic thickness by extending a stratigraphic column into the subsurface...
2020
Continental Margins from Viewpoint of the Petroleum Geologist
Hollis D. Hedberg
AAPG Bulletin
... information as is available at the near-surface or from canyon walls. Most of our information on the nature of the rises is derived from refle tion seismic...
1970
Improving the image below complex overburden geology with FWI and Q-tomography: A case study at Etame license area, offshore Gabon
Richard Huang, Chong Chung, Benjamin Cole, Ivan Berranger, Ika Novianti, Paul Ware
International Meeting for Applied Geoscience and Energy (IMAGE)
... near surface velocity updates. Figure 3c shows the depth slice at 500 m depth of the updated velocity. We see high velocities up to 3,200 m/s, much...
2022
Mapping Shallow Horizons with Reflection Seismograph
L. C. Pakiser , D. R. Mabey , R. E. Warrick
AAPG Bulletin
... of the low-velocity weathered layer, where the character of the near-surface materials was uniform. Datum corrections were made easily and correlation...
1954
Abstract: Seismic Imaging Beneath the Volcanic Rocks of the Nechako Basin, British Columbia; #90171 (2013)
Andrew J. Calvert and Nathan Hayward
Search and Discovery.com
... geophysical data across the basin. In summer 2008, Geoscience BC acquired 330 km of seismic data near Nazko along and across the NNW-oriented surface trend...
2013