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The AAPG/Datapages Combined Publications Database

Showing 3,219 Results. Searched 200,621 documents.

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A Textural Analysis of Trona and Associated Lithologies, Wilkins Peak Member, Eocene Green River Formation, Southwestern Wyoming

Stuart J. Birnbaum, Thomas M. Radlick

Special Publications of SEPM

... by the muds trapped between the trona blades. This trona type consists of radiating crystals which have grown in a spherical or ellipsoidal form...

1987

Charge Contrast Imaging (CCI): Revealing Enhanced Diagenetic Features of A Coquina Limestone

James O. Buckman, Patrick W.M. Corbett, Lauren Mitchell

Journal of Sedimentary Research (SEPM)

... as lake delta deposits in a high energy carbonate platform, between storm wave base and fair-weather wave base (Tavares et al. 2015). The sample...

2016

Stratigraphic Utility of Some Miocene and Younger Arenaceous Foraminifera

W. P. Leutze

GCAGS Transactions

... it occurs often have few mica flakes present." The power of color differentiation suggests a sensitivity to various wave lengths of light, in effect...

1972

The Cuesta Del Cura Formation in North-Central Mexico

R.G. ICE

West Texas Geological Society

... part of the Cuesta del Cura Formation. These nodules are spherical in shape and typically 1-2 cm in diameter. Limonite is present throughout...

1981

Hydrocarbon Trapping in the Halfway Formation (Triassic), Wembley Field, Alberta

Douglas J. Cant

CSPG Bulletin

.... This type of deposit is interpreted as a regressive shelf-to-shoreline sequence, dominated by tide- and wave-influenced beach-barrier deposits...

1986

The Permian-Triassic Stratigraphy of the Northwest Paradox Basin Area, Emery, Garfield, and Wayne Counties, Utah

Gary C. Mitchell

Rocky Mountain Association of Geologists

...). The lower portion usually contains quartz lined geodes whereas the upper portion, if present, contains abundant angular to spherical gray and white chert...

1985

Heavy Black Sands on Some Victorian Beaches

George Baker

Journal of Sedimentary Research (SEPM)

... irregular in outline, well-rounded, spherical and ellipsoidal grains being uncommon, whereas octahedral crystals are rare. Ilmenite grains are often...

1945

A Note on Depositional Environments of the Lower-Middle Cambrian Cadiz Formation, Marble Mountains, California

John R. Foster

Rocky Mountain Association of Geologists

..., but the presence of symmetrical and interference ripples indicates that some wave and perhaps tidal currents influenced the sedirnents.The convolute bedding...

1994

Formal definition of the Lower Jurassic McCoy Brook Formation, Fundy Rift Basin, eastern Canada

Lawrence H. Tanner

Atlantic Geology

..., and vary from massive to finely laminated to ripple crosslaminated, commonly displaying a sandpatch fabric (sertsu Smoot and Olsen, 1988). Spherical...

1996

Some Occurrences of Supergene Iron Sulphides in Relation to their Environments of Deposition

A. B. Edwards, G. Baker

Journal of Sedimentary Research (SEPM)

... development of mar asite, partly as nodules replacing wood, and partly as spherical concretions of radiating crystals, up to 3 inches in diameter...

1951

Can Moment Tensor Inversion Aid Engineering Decisions? A Delaware Basin Case Study

Mark G. Mack, Scott M. Taylor, Jamie Rich, Dan Kahn, Jeremy King, Ben Schaeffer, Anton Reshetnikov, David Langton, Brendan Elliott, Alex Biholar

Unconventional Resources Technology Conference (URTEC)

... to conventional microseismic processing. References Chapman, C. Fundamentals of seismic wave propagation. Cambridge University Press, 2004. Lacazette...

2017

Depositional Trends in Siliciclastic Transgressive Systems Tract, Middle Eocene, Texas

Thomas E. Yancey

GCAGS Transactions

.... Scale in cm and inches. End_Page 583------------------------ where it was suspended by high energy wave action and carried offshore by storm...

1995

Geological Observations on Curacao, N.W.I.

H. P. Schaub

AAPG Bulletin

... seasons. This bed was then broken up before it had hardened much and the pebbles were rolled by the waves until they had the spherical shape. Upward...

1948

Appendix A: Considerations for Optimum 3-D Survey Design, Acquisition and Processing

R. Malcolm Lansley

AAPG Special Volumes

... of three orthogonal velocity sensors and a hydrophone (hence 4-component or 4-C) at each location. This permits the recording of shear wave components...

2011

Diagenesis of Orthoquartzites Near Bogota Colombia

K. R. Aalto

Journal of Sedimentary Research (SEPM)

... and may be aligned parallel to crystal structure. They commonly exhibit crystal or cleavage form, but nearly spherical inclusions of zircon occur...

1972

Petrography and Petrology of Scurry Reef, Scurry County, Texas

Richard E. Bergenback, Robert T. Terriere

AAPG Bulletin

... of well sorted oolites in a matrix of crystalline calcite (Pl. 1, F). The oolites and pisolites are spherical to ellipsoidal and range from 0.2...

1953

Radiolarites and their Relation to Subjacent "Oceanic Crust" in Liguria, Italy

Robert L. Folk, Earle F. Mcbride

Journal of Sedimentary Research (SEPM)

... (jasper) whose texture and mineral composition mimic modern soils on serpentinite, presence of a flat ?wave-cut surface beneath radiolarite, upward...

1978

Structure and Growth of Lacustrine Pisoliths from Recent Michigan Marl Lakes

Frances G. Jones, Bruce H. Wilkinson

Journal of Sedimentary Research (SEPM)

... spherical in shape, or were elongate and had two flattened sides. The average radius from the center to the upper surface is 1.1 cm, while the radius from...

1978

Quartz Geodes: Early Diagenetic Silicified Anhydrite Nodules Related to Dolomitization

Robert G. Maliva

Journal of Sedimentary Research (SEPM)

... in a decrease in water depth over time. The Ramp Creek Formation was deposited in a subtidal shelf environment, below fairweather-wave base. Occasional...

1987

Siliciclastic Stromatolites and Thrombolites, Late Miocene, S.E. Spain

Jose M. Martin, Juan C. Braga, Robert Riding

Journal of Sedimentary Research (SEPM)

... in units 2 and 3, contain both oolites and siliciclastic conglomerates and sands that display abundant wave-generated ripples and cross-laminations...

1993

Molar-Tooth Carbonates: Shallow Subtidal Facies of the Mid- to Late Proterozoic

Noel P. James, Guy M. Narbonne, Anne G. Sherman

Journal of Sedimentary Research (SEPM)

... is parted to ribbon limestone with conspicuous wave ripples, gutter casts, hummocky cross-stratification, and storm beds; these fine-grained rocks form...

1998

Comparison of Quartz and Carbonate Shallow Marine Sandstones, Fredericksburg Cretaceous, Central Texas

C. H. Moore, Jr. , K. G. Martin

AAPG Bulletin

... of the formation. The Paluxy tongue was deposited by longshore currents, and modified shoreward by wave swash and tidal action in a coastal nearshore...

1966

Complex Petrophysical Studies to Evaluate the Safety of an Underground Gas Storage in Porous Rocks, #80642 (2018).

Carlo Dietl, Roland Braun, Hansjörg Baumgartner, Eberhard Jahns, Tobias Rudolph

Search and Discovery.com

... of the 3D in situ stress field on drill core samples based on ultrasonic velocity investigations. Pand S-wave measurements are carried out on five...

2018

Gastropod egg capsules preserved on bivalve shells from the Lower Jurassic (Hettangian) of Poland

Michał Zatoń, Grzegorz Niedźwiedzki, Grzegorz Pieńkowski

PALAIOS

... redistribution by wave and current action, was favorable for preserving these fossils. record (see Table 1). Apart from Paleogene and Neogene eggs...

2009

Climatic Cycles as Sedimentary Controls of Rift-Basin Lacustrine Deposits in the Early Mesozoic Newark Basin Based on Continuous Core

Joseph P. Smoot, Paul E. Olsen

Special Publications of SEPM

... with deltaic deposits, wave-formed sandstone and conglomerate, fluvial deposits, and alluvial-fan deposits near the basin margins, but are interbedded...

1994

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