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The AAPG/Datapages Combined Publications Database
Showing 11,101 Results. Searched 200,691 documents.
Refraction Profiles Over the Southern Rocky Mountain Trench Area of British Columbia
A. T. Lamb, D. W. Smith
CSPG Bulletin
... inline refraction profiles and seven cross spreads oriented parallel to the Trench. Excluding a small amount of near surface weathering material...
1962
Pollen Field, Colorado: Evidence for Vertical Hydrocarbon Migration and Geochemistry Economic Utility, by P. K. H. Groth; #90986 (1994).
Search and Discovery.com
1994
Porosity Prediction in Sandstones Using Erosional Unconformities
G. Shanmugam
AAPG Special Volumes
... weathering of near-surface rock strata. Subaerial erosion exposes new surfaces for leaching, commonly over wide areas. During subsequent weathering...
1990
Systematic Approach in the Characterisation of Granitic Weathering Profiles in Tropical Terrains
Ibrahim Komoo, Kadderi Md Desa, Hamzah Mohamad, Abdul Ghani Rafek, Tan Boon Kong
Geological Society of Malaysia (GSM)
.... Although the degree of rock mass weathering changes with depth, the general trend that the rocks are completely weathered near the surface and become less...
1991
Basalt Weathering and Fluvial Sedimentary Particles: Comparison of Two Watersheds in the Middle Atlas Mountains, Morocco
J. J. Macaire , C. Cocirta , L. Karrat , A. Perruchot
Journal of Sedimentary Research (SEPM)
..., N., 1990, Weathering of basalts in North Parana basin (Brazil), chemical aspects, in Nahon, D, ed., Geochemistry of the Earth's Surface...
1994
Porosity Development in Sandstones Beneath Erosional Unconformities
G. Shanmugam
West Texas Geological Society
... in the total weathering of near-surface rock strata. Subaerial erosion exposes new surfaces, often over wide areas, for leaching. During subsequent...
1989
Seismic Studies in the Church Rock Uranium District, Southwest San Juan Basin, New Mexico
William T. Phelps, Robert S. Zech, A. Curtis Huffman Jr.
AAPG Special Volumes
... to compensate for elevation and near-surface velocity variations along each seismic line. Because neither refraction surveys nor uphole time from shot...
1986
Geophysical Evidence for Thin-Skinned Structural Deformation in the Norman Range, Northwest Territories
DON C. Lawton, J. Helen Isaac
CSPG Bulletin
..., except for the Bear Rock Formation, for which the measured values are significantly lower. This is due to the near-surface dissolution of the anhydrite...
2005
Abstract: 3C Deghosting for Refraction Time-lapse Monitoring; #90187 (2014)
P. B. Wills and K. De Meersman
Search and Discovery.com
... ghosting with strong near-surface effects. For refraction data, which is lower fold, ghost removal can be even more important than for conventional...
2014
Geophysics Along the Edwards Trend
W. Lee Moore
GCAGS Transactions
... crews to convert to this method. Seismic energy is recorded on tape and then played back through filtered channels. Weathering and elevation corrections...
1957
Automated machine learning first-break picking in the Sichuan Basin A case study
Jianfa Wu, Xuewen Shi, Qiyong Gou, Ersi Xu, Dongjun Zhang, Dingxue Wang, Phil Bilsby, Qing Zhou, Rong Li
International Meeting for Applied Geoscience and Energy (IMAGE)
... the industry. Introduction The task of performing first-break picking, as part of the wider near-surface characterization activity, is of critical importance...
2024
Weathering of Glacial Tills in Indiana: II. Heavy Minerals
N. Bhattacharya
Journal of Sedimentary Research (SEPM)
...Weathering of Glacial Tills in Indiana: II. Heavy Minerals N. Bhattacharya 1963 Vol. 33 No. 3. (September), Petrographic data from weathered...
1963
Clay Mineralogy and Relative Age of Tills in North-Central Wisconsin
Mark T. Stewart, David M. Mickelson
Journal of Sedimentary Research (SEPM)
... the weathering of a till starts at the surface and proceeds downward, the till near the surface undergoes the longest period of weathering...
1976
Adjustments of Velocity Logs to Tie Geophone Surveys
Warren Hicks
Oklahoma City Geological Society
..., 1954. White, J. E. and Sengbush, R. L.: Velocity Measurements in Near-Surface Formations - Geophysics, Vol. 18, pp. 54-69, 1953. Faust, L. Y...
1961
The Need for Seismic Dip Migration
W. B. Robinson.
Oklahoma City Geological Society
... for weathering and surface elevation. Migration is needed to improve the accuracy of our calculations in order that we may better predict drilling depths...
1958
Field Technique Design for Seismic Reflection Exploration
L. R. Denham
Dallas Geological Society
... it is common practice to use very deep shotholes solely for the near-surface correction data they give, a practice which is often difficult to justify...
1982
Interpretation of Thorium to Uranium Ratios in Granitic Rocks and Implications for Uranium Exploration: ABSTRACT
John S. Stuckless
AAPG Bulletin
... based on measurements of surface or shallow bore-hole samples that may have been affected by near-surface processes, such as uranium loss by leaching...
1980
Abstract: Time-lapse Surface-Consistent Processing of Buried Receiver Data Using the Virtual Source Method; #90254 (2016)
Christos Saragiotis, Abdullah Ramadan, Andrey Bakulin
Search and Discovery.com
... of the monitoring period. The repeatability noise due to near-surface variability could be significantly reduced, if sources and receivers were buried...
2016
Geophysical and Petrological Study of Precambrian of Central Alberta, Canada
G. D. Garland , R. A. Burwash
AAPG Bulletin
... in other studies in Canada. This density is undoubtedly too high for the surface material over the plains, but there the elevation varies only...
1959
Limitations on Resolution of Seismic Reflections and Geologic Detail Derivable from Them: Section 1. Fundamentals of Stratigraphic Interpretation of Seismic Data
Robert E. Sheriff
AAPG Special Volumes
... and there are variations in surface elevation, weathering thickness, and irregularities in coverage because of access and permit problems. The conventional section...
1977
Abstract: Improving Reservoir Imaging with Time-Lag Fwi in the Partitioned Zone Between Kuwait and Saudi Arabia; #91204 (2023)
Art Petrenko, Trevor Coulman, Guangfu Shao, Ibrahim Hakam, Mohammed Almutairi, Sujoy Ghose, Kai Zhang
Search and Discovery.com
...-velocity anhydrite layer, underlying a very slow weathering layer (2500 ft/s near the surface). This combination limits the angle of transmitted...
2023
Land surface-related multiple attenuation based on wave-equation deconvolution
Gordon Poole, Brandon Li, Mattia Miorali, Keith Mills, John Tickle
International Meeting for Applied Geoscience and Energy (IMAGE)
... approaches (Biersteker, 2001). For land data, a non-horizontal topography combined with an unknown and complex weathering layer reflecting surface means...
2022
Abstract: Determining Scale Properties from Seismic Transmission Responses: A Modeling Study; #90171 (2013)
Emmanuel L. Bongajum and Bernd Milkereit
Search and Discovery.com
... contrast between target structures and background as well as near surface statics due to weathering influence the quality of the seismic reflection...
2013
Abstract: Determining Scale Properties from Seismic Transmission Responses: A Modeling Study; #90171 (2013)
Emmanuel L. Bongajum and Bernd Milkereit
Search and Discovery.com
... contrast between target structures and background as well as near surface statics due to weathering influence the quality of the seismic reflection...
2013