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The AAPG/Datapages Combined Publications Database

Showing 10,864 Results. Searched 196,436 documents.

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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

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