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The AAPG/Datapages Combined Publications Database
Showing 10,864 Results. Searched 196,436 documents.
Interpreting Detrital Modes of Graywacke and Arkose
William R. Dickinson
Journal of Sedimentary Research (SEPM)
... be circumvented by suitable calculations, but cannot be ignored. Second, a serious practical difficulty arises in defining the upper visual limit of matrix...
1970
Stratigraphic Distribution and Mineralogic Correlation of the Green River Formation, Green River and Washakie Basins, Wyoming, U.S.A.
Glenn M. Mason
AAPG Special Volumes
..., M. K., A. R. Carroll, J. T. Pietra, B. L. Beard, and C. M. Johnson, 2002, Strontium isotope record of paleohydrology and continental weathering...
2012
Sedimentation on the Distal Reaches of the Okavango Fan, Botswana, and its Bearing on Calcrete and Silcrete (Ganister) Formation
T.S. McCarthy, W.N. Ellery
Journal of Sedimentary Research (SEPM)
... onto the fan exceeds the clastic load by a factor of two, and mass-balance calculations based on total sediment inflow and outflow (clastic...
1995
Post-Depositional History of Tensleep Sandstone (Pennsylvanian), Big Horn Basin, Wyoming
T. W. Todd
AAPG Bulletin
... of the Big Horn basin. Lithologically the average Tensleep is a white (N8)3 weathering dun (10YR 8/2), hard to somewhat friable, cross-bedded (3-7 feet...
1963
Middle Permian Telodiagenetic Processes in Neoproterozoic Sequences, Tandilia System, Argentina
Patricia Eugenia Zalba, Marcelo Manassero, Emmanuel Laverret, Daniel Beaufort, Alain Meunier, Martin Morosi, Laura Segovia
Journal of Sedimentary Research (SEPM)
... systematically below 1 × 10−7 cm3/g STP. The usual decay constants were used for age calculations (Steiger and Jager 1977) and the overall error of the K–Ar age...
2007
Environment of Wyoming Tertiary Uranium Deposits
Ruffin I. Rackley
AAPG Bulletin
... probably had reached 2,000 ft (610 m) above sea level, with much of the sedimentary cover removed. Under warm, humid conditions weathering was rapid...
1972
Shelf and Deep-Sea Sedimentation in Eocene Forearc Basin, Western Oregon--Fan or Non-Fan?
M. A. Chan , R. H. Dott, Jr.
AAPG Bulletin
... average 4 to 8 in. (10 to 20 cm) in thickness. Internal structures in thes beds are commonly obscured by weathering, but parallel lamination, ripple...
1983
Sea-Level Changes: Mechanisms, Magnitudes and Rates
John F. Dewey, Walter C. Pitman
Special Publications of SEPM
... based his calculations on an the Cretaceous. Harrison (1990) based his calculations on an estimated decrease of WOC in ocean water below a depth...
1998
Modal and Geochemical Compositions of the Lower Silurian Clastic Rocks in North Qilian, NW China: Implications for Provenance, Chemical Weathering, and Tectonic Setting
Jianghai Yang, Yuansheng Du, Peter A. Cawood, Yajun Xu
Journal of Sedimentary Research (SEPM)
...Modal and Geochemical Compositions of the Lower Silurian Clastic Rocks in North Qilian, NW China: Implications for Provenance, Chemical Weathering...
2012
Geochemical markers of paleoenvironments, weathering, and provenance in Permian–Triassic terrestrial sediments
Ana-Belén Galán-Abellán, José F. Barrenechea, Raúl de La Horra, Jacinto Alonso-Azcárate, Javier F. Luque, Violeta Borruel-Abadía, José López-Gómez
Journal of Sedimentary Research (SEPM)
...Geochemical markers of paleoenvironments, weathering, and provenance in Permian–Triassic terrestrial sediments Ana-Belén Galán-Abellán, José F...
2020
Well Preserved Late Precambrian Paleosols from Northwest Scotland
Gregory J. Retallack , A. Mindszenty
Journal of Sedimentary Research (SEPM)
... of 113 cm and mean a nual rainfall some 693 ± 141 mm. The higher, or subhumid, value is more realistic considering the depth of weathering...
1994
Mid-Tertiary Stratigraphy, Santa Rosa Island
F. A. Avila, D. W. Weaver
Pacific Section of AAPG
... conforms to the dip of the overlying Miocene strata.” Kew had apparently mistaken the tuffaceous nature of the formation for deep weathering...
1969
XRF-based Chemostratigraphy Between and Across Two Disconformities in the Ordovician Trenton Group and Utica Shale of Central New York, U.S.A.
Jeffrey T. Pietras, Ethan B. Spiegel
Journal of Sedimentary Research (SEPM)
..., W.M., Klinkhammer, G.P., Hammond, D.E., and Holm, C., 2005, Authigenic uranium: relationship to oxygen penetration depth and organic carbon rain...
2018
Buried rift basin under the Kalpin fold-thrust belt in the northwestern Tarim Basin: Implications for deep oil and gas exploration
Cheng Zhong, Tongsheng Zeng, Chengzao Jia, Guoqi Wei, Dong Jia, Yongjin Zhu, Hongwei Yin, Zhuxin Chen, Xing Wang, and Yong Zhang
AAPG Bulletin
... This study used a data set comprising 11 2-D depth domain seismic profiles and two exploration wells, designated KT1 and T1. The well data include...
2024
A Transgressive Shelf Sequence Exibiting Hummocky Stratification: the Cape Sebastian Sandstone (Upper Cretaceous), Southwestern Oregon
Joanne Bourgeois
Journal of Sedimentary Research (SEPM)
....) Calculations of Water Depth.--Ripple wavelengths within the hummocky-bedded facies of the Cape Sebastian Sandstone vary from 5.5 to 7.5 cm...
1980
Paleoceanographic and Paleoclimatic Controls on Ooid Mineralogy of the Smackover Formation, Mississippi Salt Basin: Implications for Late Jurassic Seawater Composition
Ezat Heydari , Clyde H. Moore
Journal of Sedimentary Research (SEPM)
...-SANDERS, M., AND GROEN, P., 1970, Wind and water depth and their beating on the circulation in evaporite basins, in Rau, J.L., and Dellwig, L.F., eds...
1994
Quantification of fold curvature and fracturing using terrestrial laser scanning
Mark A. Pearce, Richard R. Jones, Steven A. F. Smith, Kenneth J. W. McCaffrey
AAPG Bulletin
... in surface topography on a millimeter scale. Before curvature calculations can be performed, the density of the point cloud needs to be decreased to reduce...
2011
Diagenetic Mineralogy and Controls on Albitization and Laumontite Formation in Paleogene Arkoses, Santa Ynez Mountains, California: Part 2. Aspects of Porosity Modification
Kenneth P. Helmold, Peter C. van de Kamp
AAPG Special Volumes
... recognized at 0.5% R0 corresponding to a paleotemperature of 110°C (4572 m burial depth), with complete albitization first occurring at a reflectance of 0.90...
1984
AAPG/Datapages Discovery Series No. 7: Multidimensional Basin Modeling - Abstracts
AAPG Special Volumes
... formation and the timing of salt weld formation. Weld ramps may dip in all directions.Faulting. The heave of a fault is balanced by salt withdrawal at depth...
2003
Petrography of Northeastern Lake Michigan Bottom Sediments
John Ezra Moore
Journal of Sedimentary Research (SEPM)
... and fine sediments are restricted to the hollows between ridges. There is a regular variation in size with depth, but no regular variation in size...
1961
Potassium-argon timing of episodic mica and illite crystallization in highly indurated Hassi Messaoud (Algeria) hydrocarbon-bearing sandstones
Norbert Clauer, Horst Zwingmann, Andrew Todd, and Amélie Aubert
AAPG Bulletin
... illitization at a present-day depth of approximately 4000 m (∼13,000 ft). Aliev, M., N. Ait Laoussine, V. Avrov, G. Aleksine, G. Barouline, B. Jakovlev, and M...
2019
Geochemistry and Petrology of Volcanic Rocks from the Woodlark Basin: Addressing Questions of Ridge Subduction
M. R. Perfit, C. H. Langmuir, M. Backisapa, B. Chappell, R. W. Johnson, H. Staudigel, S. R. Taylor
Circum Pacific Council Publications
... of ancient subduction zones and reversed polarity to rationalize some of the discrepancies in the correlation of chemistry with depth to the Benioff zone...
1987
Analysis of Recent and Historical Salt-Crust Thickness Measurements and Assessment of their Relationship to the Salt Laydown Project, Bonneville Salt Flats, Tooele County, Utah
W. W. White III, Moises Terrazas
Utah Geological Association
... area was calculated using the ArcGIS 3D Analyst. The four square-mile area appears similar to the area excluded from UDOT volume and area calculations...
2006
Age significance of nC17/Pr ratios in forensic investigations of refined product and crude oil releases
Richard W. Hurst, Gene W. Schmidt
Environmental Geosciences (DEG)
..., November 1315, 1996, Houston, Texas: Westerville, Oklahoma, Groundwater Publishing Co., p. 549572.Schmidt, G. W., 1998, The effect of petroleum weathering...
2005
Upper Permian Vertebrate Coprolites from Vyazniki and Gorokhovets, Vyatkian Regional Stage, Russian Platform
Krzysztof Owocki, Grzegorz Niedźwiedzki, Andrey G. Sennikov, Valeriy K. Golubev, Katarzyna Janiszewska, Tomasz Sulej
PALAIOS
... et al., 2010, with additions and corrections). at an accelerated voltage of 25 kV, a beam current of 98–103 nA, and a spot diameter of 4 mm. Chemical...
2012