Bentonite Mining Near Kaycee, Wyoming

Thomas Thorson

Wyoming Geological Association

... of the distinctive features of these cabins is the thick layer of bentonite which is found on the roofs. Bentonite was found to be an effective sealant of wind...

Abstract: Interferometric Approach to Complete Refraction Statics Solution; #90187 (2014)

Valentina Khatchatrian and Mike Galbraith

Search and Discovery.com

.... We show below an example of the replacement statics computation for a one layer model, which is easily expandable to a multi-layer model, expressed...

Pyrite and Marcasite Coated Grains in the Ordovician Winnipeg Formation, Canada: An Intertwined Record of Surface Conditions, Stratigraphic Condensation, Geochemical "Reworking," and Microbial Activity

Jurgen Schieber, Lee Riciputi

Journal of Sedimentary Research (SEPM)

... flocculent layer: Paleoceanography, v. 16, p. 1–19. Prior, D.J., Boyle, A.P., Brenker, F., Cheadle, M.C., Day, A., Lopez, G., Peruzzo, L., Potts, G.J., Reddy...

Spatial Distribution of Carbon and Oxygen Isotopes in Laterally Extensive Carbonate-Cemented Layers: Implications for Mode of Growth and Subsurface Identification

Jeffrey S. Klein , Peter Mozley , Andrew Campbell , Rex Cole

Journal of Sedimentary Research (SEPM)

... the layers (2.3 m to 1.5 km apart on the same layer), and from isolated and stratabound concretions. Taken together, all the cements (regardless...

Origin of Massive Banded Carbonates with "Bluebird Structures" in the Cambrian of the Eastern Great Basin

John C. Kepper

Journal of Sedimentary Research (SEPM)

... and replacement processes. Pore-filling fabrics are associated with the centrifugal replacement of ferroan dolomite; nonferroan dolomite appears...

Diagenesis of Middle and Upper Eocene Carbonate Shoreline Sequences, Central Florida

A. F. Randazzo , G. C. Stone , H. C. Saroop

AAPG Bulletin

... of dolomitzation. These textures are (1) replacement dolomitization of the total sediment so that original fabrics are preserved; (2) dolomitization...

Silcretes and Associated Silica Diagenesis in Southern Africa and Australia

David Smale

Journal of Sedimentary Research (SEPM)

... cm across are present in the clay near the silcrete layer, which tends to be rich in colloform leucoxene (Fig. 2). A well-known quarry northeast...

A three-component field study of the effect of the low-velocity layer on converted-wave seismic data

Dan Cieslewicz, Don C. Lawton

CSPG Special Publications

...A three-component field study of the effect of the low-velocity layer on converted-wave seismic data Dan Cieslewicz, Don C. Lawton 1998 217 220...

Correlations of Diagenesis with Sedimentary Facies in Eocene Sandstones, Western Oregon

Marjorie A. Chan

Journal of Sedimentary Research (SEPM)

...------------------------ Samples exhibiting extensive calcite replacement were avoided for point counts to eliminate identification errors caused...

Mineral Exploration in the Northern Keg Mountains, Juab County, Utah

Margaret E. Venable

Utah Geological Association

..., and at depth may host porphyry-style mineralization, skarns, and/or associated Tintic-style replacement bodies. The Keg district is hosted by Paleozoic...

Dolomitization and Dolomite "Dikes" in the Wyman Formation (Precambrian), Northeastern Inyo Mountains, California

Donald H. Zenger

Journal of Sedimentary Research (SEPM)

... and have transitional or sharp contacts. A replacement origin for the dolomite in the pods and dikes is evidenced by transitional margins and relic...

Depositional Environments and Petrology of the Gilwood Member North of the Peace River Arch

B. A. Rottenfusser, T. A. Oliver

CSPG Bulletin

... Environments: Soc. Econ. Paleontologists Mineralogists, Publ. 16, p. 84-97. Walker, T. R., 1960, Carbonate replacement of detrital crystalline silicate...

A Note on a New Type of Conical Structure in Shale: NOTES

Bertram G. Woodland

Journal of Sedimentary Research (SEPM)

... layer with both the upper and lower surfaces slicken-sided and bearing longitudinal striations extending from the apex to the base (fig. 2). The cone...

Geochemistry of Oil-Shale Genesis, Green River Formation, Wyoming

John Ward Smith

Wyoming Geological Association

... also occurs in the lighter layers, sufficient organic segregation exists to permit easy recognition of the cyclic two-layer structure. The photograph...

Other Carbonate Grains: Ooids and Pisolites

AAPG Special Volumes

... to five layer) concentric coatings which must be carefully distinguished from micrite envelopes. They are important in echinodermal limestones...

Fabric-Selective Diagenesis in the Late Pleistocene Miami Limestone

Charles C. Evans , Robert N. Ginsburg

Journal of Sedimentary Research (SEPM)

..., and friable layers, each 1-2 cm thick. The term bed is used here as the couplet of one hard and one soft layer, generally totalling 1-4 cm in thickness...

Diagenesis of Terry Sandstone (Upper Cretaceous), Spindle Field, Colorado

Edward D. Pittman

Journal of Sedimentary Research (SEPM)

... of these minerals is believed to be related to the evolution of marine water. Secondary porosity formed by dissolution of pore-filling and replacement calcite...

Diagenesis of Skeletal and Nonskeletal Components of Mid-cretaceous Limestones

Kyung-sik Woo , Thomas F. Anderson, Philip A. Sandberg

Journal of Sedimentary Research (SEPM)

... crystalline calcite, which can be either equant cement or neomorphic calcite replacement of the former aragonitic inner layer. Equant calcite cement is dully...

Aragonite Cements and their Occurrence in Ancient Limestones

Philip Sandberg

Special Publications of SEPM

.... Many other isopachous fibrous calcite cements with regular optic orientation have been commonly inferred to be the product of pseudomorphic replacement...

Oolitic Iron Deposits of New Mexico

V. C. Kelley

AAPG Bulletin

...). Note peripheral oolitic growth around quartz. Replacement appears to be largely of calcite around quartz. Thin section across ore bedding. Transmitted...

Unusual Coprolites from the Upper Cretaceous Ferron Sandstone, East-Central Utah

John K. Balsley, Wm. Lee Stokes

Earth Science Bulletin (WGA)

... coprolites are light gray on the surface and dark brown in the center. Those long exposed to weathering have a light-gray to white outer layer and a gray...

Abstract: Nonvadose Origin of Pisolitic Facies, Capitan Reef Complex (Permian), Guadalupe Mountains, New Mexico and West Texas, by Mateo Esteban, Lloyd C. Pray; #90972 (1976).

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Seismic Anisotropy Modelling and Fluid Substitution for Carbon Dioxide (Co2) Well Storage Project In Carbonate Reservoir

Pebrian Tunggal Prakosa, Thariq Guntoro, Ahmat Dafit Hasim, Okok Wijaya, Yulia Putri Wulandari

Indonesian Petroleum Association

... not have Vs, so we calculate Vs from fluid replacement model and the Castagna formula. After we obtain Vp and Vs, we can use fluid substituion based...

Gas Pits in Non-marine Sediments

John H. Maxson

Journal of Sedimentary Research (SEPM)

... of disturbance or accretion. The small pits were formed after emergence of the mud bar as shown by their replacement of raindrop impressions. Field...

Greywackes with a Primary Matrix from the Viqueque Formation (Upper Miocene-Pliocene), Timor: Comment on a Paper By M. G. Audley-Charles: DISCUSSIONS

Riyadh A. Rahmani

Journal of Sedimentary Research (SEPM)

.... For example, the original turbidite bed might consist of several layers, commencing with a relatively well-sorted layer of sand at the base (fig. 1a...