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The AAPG/Datapages Combined Publications Database

Showing 3,220 Results. Searched 200,983 documents.

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Tidal-flat Deposition and Early Dolomitization in Upper Ordovician Rocks of Southern Appalachian Valley and Ridge

Allan M. Thompson

Journal of Sedimentary Research (SEPM)

...%, of the carbonate fraction. It typically occurs as large patches, similar in occurrence to the sparry calcite. Spherical calcite pellets make up 10...

1970

Geologic Architecture of Circum-Pacific

Lewis G. Weeks

AAPG Bulletin

... is known as a guyot or table mount. The writer accepts the view that the flat top is the result of wave bevelling at some former lower level of the sea...

1959

Facies Model of a Semiarid Freshwater Wetland, Olduvai Gorge, Tanzania

Cynthia M. Liutkus, Gail M. Ashley

Journal of Sedimentary Research (SEPM)

... cemented together into a sheet of carbonate, with only a faint remnant outline of the previously spherical nodules. In other areas, discrete spherical...

2003

Practical Petrographic Classification of Limestones

Robert L. Folk

AAPG Bulletin

... of the sea floor, or by low tides allowing wave attack on exposed, mudcracked flats. Specifically excluded are fragments of consolidated limestone eroded...

1959

Alluvial and Destructive Beach Facies From the Archaean Moodies Group, Barberton Mountain Land, South Africa and Swaziland

K. A. Eriksson

Dallas Geological Society

.... Clifton, H. E., 1973, Pebble segretation and bed lenticularity in wave-worked versus alluvial gravels: Sedimentology, v. 20, p. 173-187. Cloud, P. E...

1977

Alluvial and Destructive Beach Facies From the Archaean Moodies Group, Barberton Mountain Land, South Africa and Swaziland

K. A. Eriksson

CSPG Special Publications

.... Clifton, H. E., 1973, Pebble segretation and bed lenticularity in wave-worked versus alluvial gravels: Sedimentology, v. 20, p. 173-187. Cloud, P. E...

1977

The Great Salt Lake - an Overview

Robert E. Cohenour

Utah Geological Association

.... The brine weight of 76 lb/ft3 (1217 kg/m3) operating in conjunction with wave action is a forceful agent of erosion. Currents The distribution...

1987

Polyphase Limestone Dikes in the Oamaru Region, New Zealand

Douglas W. Lewis

Journal of Sedimentary Research (SEPM)

... to this study. Geology of the Oamaru district is detailed by Gage (1957). Approximately 75 sedimentary dikes are exposed in cliffs, wave-cut terraces, and sparse...

1973

Facies and Fabric Specificity of Early Subsea Cements in Shallow Belize (British Honduras) Reefs

Noel P. James , Robert N. Ginsburg, Donald S. Marszalek, Philip W. Choquette

Journal of Sedimentary Research (SEPM)

... fundamental sedimentological, stratigraphic, and economic problems of these structures. The wave-resistance and steep profiles of some reefs...

1976

Cache Field--A Pennsylvanian Algal Reservoir in Southwestern Colorado

R. S. Gray

AAPG Bulletin

... "leaves" or fronds suggesting a loosely packed head of lettuce. It is believed that the "leaves" could not withstand a high degree of current and wave...

1967

Late Precambrian-Cambrian Sediments of Huqf Group, Sultanate of Oman

G.E. Gorin , L.G. Racz , M.R. Walter

AAPG Bulletin

... nodules are common, as are spherical dolomite nodules up to 50 cm in diameter made of concentric lay rs, 10 to 50 mm thick. The nodules are interpreted...

1982

Effects of SEM Preparation Techniques on the Appearance of Bacteria and Biofilms in the Carter Sandstone

Sarah E. Fratesi, F. Leo Lynch, Brenda L. Kirkland, Lewis R. Brown

Journal of Sedimentary Research (SEPM)

... of the biofilm by washing away this smooth outer layer. Small (50–200 nm) spherical structures are present in all samples but are particularly...

2004

Chapter 5 - Grains: Miscellaneous Detrital Grains & Associated Rock Types

Dana S. Ulmer-Scholle, Peter A. Scholle, Juergen Schieber, Robert J. Raine

AAPG Special Volumes

...) spherical, highly perforate skeletons with or without spines. They are fully marine and are very common in basinal shales. Diatoms are unicellular algae...

2014

Orbitally Driven Depositional Cyclicity in Shallow Marine Carbonates of the Lower Paleozoic Aisha-Bibi Seamount (Malyi Karatau, Kazakhstan): Integrated Sedimentological and Time-Series Study

Dmitry A. Bazykin, Linda A. Hinnov

Special Publications of SEPM

...). Symmetrical oscillatory ripples found in many of the grainstones indicate that deposition occurred above fair-weather wave base. Centimeter-scale...

2002

An Oil Producing Reef-Fringed Carbonate Bank in the Upper Devonian Swan Hills Member, Judy Creek, Alberta1

James W. Murray

CSPG Bulletin

..., p. 234), namely, "a skeletal deposit formed by organisms which do not have the ecologic potential to erect a rigid wave-resistant structure...

1966

Transportation of Detritus by Moving Water

Filip Hjulstrom

Special Publications of SEPM

...). The wave length ordinarily is between i. and 30 centimeters. The more fine-grained the sediment, the more well developed are these current ripples...

1955

Paleoenvironments and Regional Stratigraphic Framework of the Middle–Upper Albian Lepine Formation in the Liard Basin, Northern Canada

D.M.S. Jowett, C.J. Schroder-Adams

CSPG Bulletin

.... Geological Survey of Canada, Paper 75-11, 9p. Walker, R. G. and Plint, A. G. 1992. Wave- and storm-dominated shallow marine systems. In: Facies Models...

2005

Recent Carbonate Sedimentation by Tidal Channels in the Lower Florida Keys

Vladimir Jindrich

Journal of Sedimentary Research (SEPM)

... northward in the vicinity of the Marquesas Keys and Dry Tortugas Keys. From there the tidal wave recurves eastward along the northern margin of the Lower...

1969

The Size-Distribution of Heavy Minerals Within a Water-Laid Sandstone

William W. Rubey

Journal of Sedimentary Research (SEPM)

... a much larger surface area opposed to the currents of water than spherical particles of the same volume and density and, for that reason, the flat...

1933

Diagenesis Through Coupled Processes: Modeling Approach, Self-Organization, and Implications for Exploration

W. Chen, A. Ghaith, A. Park, P. Ortoleva

AAPG Special Volumes

... spherical. Hence [EQUATION (5)] for the effective grain radius Ri. If the rock has high porosity, one might assume that most of the grain surface area (4R...

1990

Timing of Deposition, Diagenesis, and Failure of Steep Carbonate Slopes in Response to a High-Amplitude/High-Frequency Fluctuation in Sea Level, Tongue of the Ocean, Bahamas: Chapter 4

G. Michael Grammer, Robert N. Ginsburg, Paul M. Harris

AAPG Special Volumes

... are nearly spherical in shape and range in height from a few decimeters to more than 1 m. Downslope, the moguls become progressively more elliptical...

1993

Earliest Triassic Claystone Breccias and Soil-Erosion Crisis

G.J. Retallack

Journal of Sedimentary Research (SEPM)

... granule-size or larger clasts that are angular, far from spherical, and have no internal bedding, unlike flat-pebble conglomerates which contain rounded...

2005

Episodic postglacial deltaic pulses in the Gulf of Cadiz: Implications for the development of a transgressive shelf and driving environmental conditions

Álvaro Carrión-Torrente, Francisco José Lobo, Ángel Puga-Bernabéu, Isabel Mendes, Susana Lebreiro, Marga García, David van Rooij, María Luján, María Isabel Reguera, Laura Antón

Journal of Sedimentary Research (SEPM)

..., A., and Zabel, M., 2021, Response of a wave-dominated coastline and delta to antecedent conditioning and fluctuating rates of postglacial sea-level rise...

2022

Irregular Fenestrae in Bahamian Eolianites: A Rainstorm-Induced Origin

Roger J. Bain , Pascal Kindler

Journal of Sedimentary Research (SEPM)

... discontinuous zones restricted to the nearly horizontal lower part and toe of eolian foresets (Fig. 3A). These voids are spherical to elongate and are up to 2...

1994

Dynamics of Sediment Movement

Gerard Middleton, John B. Southard

Special Publications of SEPM

... values for more spherical and more rounded grains) and on sorting (smaller values for better sorted grains). That these larger values are in fact...

1984

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