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The AAPG/Datapages Combined Publications Database

Showing 11,106 Results. Searched 200,639 documents.

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Upper Devonian carbonate mounds and lenses, vicinity of Mount MacKenzie and Cardinal Mountain, Alberta

W. S. MacKenzie

CSPG Special Publications

.... Dark-weathering Cairn Formation dolomites overlie light coloured Upper Cambrian beds on the dip slopes of Tripoli Mountain (right). A dolomite mound...

1967

Upper Devonian carbonate mounds and lenses, vicinity of Mount MacKenzie and Cardinal Mountain, Alberta

W. S. MacKenzie

CSPG Special Publications

.... Dark-weathering Cairn Formation dolomites overlie light coloured Upper Cambrian beds on the dip slopes of Tripoli Mountain (right). A dolomite mound...

1967

The Origin and Geological Significance of the South Wales Underclays

M. J. Wilson

Journal of Sedimentary Research (SEPM)

... composition is determined mainly by provenance; leaching and weathering were active to only a slight degree. Many of the characteristics of the underclays may...

1965

Leaching of Heavy Minerals Above and Below the Mid-Cretaceous Unconformity in the Ohuriawa Gorge Area of the Waipara River, North Canterbury, New Zealand

David Smale

Journal of Sedimentary Research (SEPM)

... and may be being affected by acidic pore fluids now associated with weathering of pyrite. The nature and distribution of solution effects on epidote grains...

1989

Burial formation of turbidite-hosted carbonate concretions of Ridge Basin, California, U.S.A., driven by the combined effects of thermal decarboxylation and detrital silicate alteration

Tracy D. Ortega, Adam D. Woods, Aradhna K. Tripati, Bayne Westrick-Snapp, Sean J. Loyd

Journal of Sedimentary Research (SEPM)

..., G., Wallmann, K., Drews, M., and Bohrmann, G., 2004, Evidence for the submarine weathering of silicate minerals in Black Sea sediments: possible...

2025

Sedimentology and Petrophysical Character of Cretaceous Marine Shale Sequences in Foreland BasinsPotential Seismic Response Issues

W. R. Almon, Wm. C. Dawson, F. G. Ethridge, E. Rietsch, S. J. Sutton, B. Castelblanco-Torres

AAPG Special Volumes

... of (A) thick tan-weathering shales and interstratified thin-bedded sheet sandstones. These sharp-based sandstones are fine-grained and exhibit parallel...

2005

Original Bedrock Composition of Wisconsin Till in Central Indiana

W. Harrison

Journal of Sedimentary Research (SEPM)

.... Jour. Sci., v. 249, p. 66-71. GRAVENOR, C. P., 1954, Mineralogical and size analysis of weathering zones on Illinoian till in Indiana: Am. Jour. Sci., v...

1960

Geochemistry of Color Genesis in Red-bed Sequence, Juniata and Bald Eagle Formations, Pennsylvania

Allan M. Thompson

Journal of Sedimentary Research (SEPM)

... the origin of the 1Md and 2M forms, i.e. which is detrital product of weathering and which is a diagenetic product of chemical-structural FIG. 13...

1970

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

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

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

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

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

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