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The AAPG/Datapages Combined Publications Database

Showing 3,218 Results. Searched 200,693 documents.

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Deformed Oolites in the Pre-Cambrian Bhander Limestones, India

Miss Bhagabati Sarkar

Journal of Sedimentary Research (SEPM)

..., (1) spherical (2) hooked and (3) elliptical have been studied in the Bhander Limestone of the Maihar area, Madhya Pradesh, India. Spherical oolites...

1973

On the Origin and Significance of Pyrite Spheres in Devonian Black Shales of North America

Jurgen Schieber , Gordon Baird

Journal of Sedimentary Research (SEPM)

... crystalline pyrite, framboids, concretions, and sand-size pyritic spheres. The latter, unusual because of their spherical shape and large size, were...

2001

Utilization of Existing Wells in Seismograph Work

Burton McCollum , Wilton W. Larue

AAPG Bulletin

... within 2 or 3 miles of the well, can be explored for deep domes to a depth considerably in excess of the depth of the well used for the detector...

1931

Authigenic Carbonate Concretions and Host Shales from the Shimanto Belt, Southwestern Japan: Implications for Carbonate Precipitation

Kenichiro Sugitani , Ryuichi Sugisaki , Mamoru Adachi

Journal of Sedimentary Research (SEPM)

... Belt in southwestern Japan were studied. There are three types of carbonate concretions: spherical micritic, lenticular micritic, and lenticular...

1995

Grain Size-Frequency Distributions from Thin-Section Data: NOTES

N. H. Gray

Journal of Sedimentary Research (SEPM)

... of obtaining the true size-frequency distribution of near spherical grains in sediments from their size distribution in thin section (Friedman, 1958). Most...

1969

Abstract: Cannonball Concretions of Northern Sabah, Malaysia (Paper P5)

Joanes Muda

Geological Society of Malaysia (GSM)

.... They vary in size from small objects less than 1 cm in diameter to great spherical bodies metre-scale in greatest dimension. The fiel term cannonball...

2010

Sedimentation of Beach Gravels: Examples from South Wales

Brian J. Bluck

Journal of Sedimentary Research (SEPM)

... side the imbricate zone composed mainly of imbricate disc-shaped pebbles. Seaward of the imbricate zone lies the infill zone where spherical and rod...

1967

Abstract: Paleoclimatology: A New Dimension in Oil Exploration

Leonard L. Limes

GCAGS Transactions

... the sun. Since the earth is nearly spherical, a temperature gradient must exist from the equator to the poles. These climatic zones control the environment...

1966

Paleoclimatology: A New Dimension in Oil Exploration: ABSTRACT

Leonard L. Limes

AAPG Bulletin

... from the sun. Because the earth is nearly spherical, a temperature gradient must exist from the equator to the poles. These climatic zones control...

1966

Keystone Vugs in Carbonate Beach Deposits: ABSTRACT

Robert J. Dunham

AAPG Bulletin

... in diameter and are roughly spherical or lens shaped. The roof of the vug resembles a crude keystone arch. Similar vugs can be made in the laboratory...

1970

Deposition, Diagenesis and Hydrocarbon Generation in the Ordovician Point Pleasant Limestone and the Devonian Marcellus Shale: Comparing and Contrasting Two Appalachian Basin Unconventional Reservoirs; #51539 (2018)

Randy Blood

Search and Discovery.com

... content, the Point Pleasant hosts a pore pressure gradient far in excess of that observed in the Marcellus. While expulsion fractures, including Mode I...

2018

A Visual Comparator for Degree of Sorting in Thin and Plane Sections: RESEARCH METHOD PAPER

James Harrell

Journal of Sedimentary Research (SEPM)

... grains are seldom spherical. The spherical shape was selected because it vastly simplified the computer experiments. It does not, I believe...

1984

Pebble Shape (and Size!): REPLY

Werner K. Illenberger

Journal of Sedimentary Research (SEPM)

... advantage. Furthermore, to get a clear picture of the eigen values of the significant factors in the variables (p. 758), one needs an excess of variables (p...

1992

Effect of Mica on Particle-Size Analyses Using the Laser Diffraction Technique: RESEARCH METHODS PAPERS

Shaun Hayton , Campbell S. Nelson , Brian D. Ricketts , Steve Cooke , Maurice W. Wedd

Journal of Sedimentary Research (SEPM)

... of scattered light. This scattered light distribution is then converted into a distribution of spherical particles that would produce the observed...

2001

Sporangites as "Horizon Markers"

Maurice G. Mehl, Bernard Shaffer

Kansas Geological Society

... in a glass beaker and the carbonates were removed with hydrochloric acid. Excess acid was washed from the residue with water. The residue was transferred...

1961

The Development and Placing in Service of LNG Carriers for the Indonesia/Japan Trade

Dennis G. W. Allsop

Indonesian Petroleum Association

... the vessels on 25-year time charters. The ships incorporate the Moss Rosenberg self-supporting spherical tank LNG containment system. Although the comparative...

1979

Climate Models and their Application

Eric J. Barron, George T. Moore

Special Publications of SEPM

... equations are rewritten for a spherical coordinate system and a wide variety of processes are then incorporated into the model structure. GCMs can...

1994

Early Phase Diagenesis and Lithification of Deep-Sea Chalks and Chert: ABSTRACT

S. W. Wise, Jr.

AAPG Bulletin

... glass and ests of siliceous organisms. In some chalks from the Caribbean Sea and the South Atlantic, silica has been redeposited in the form of spherical...

1972

Vertical Net Sandstone Determination for Isopach Mapping of Hydrocarbon Reservoirs: GEOLOGIC NOTES

L. Allaud

AAPG Bulletin

... with an application of an equation of spherical trigonometry. Two diagrams have been prepared to give a nomographic solution of this problem, first...

1976

Deformation of organic matter and its effect on pores in mud rocks

Guochang Wang

AAPG Bulletin

... (Figure 2B). Thus, the stress (or pressure) of bitumen should be close to or slightly in excess of hydrostatic pressure. Increasing temperature...

2020

A Study of Graphite-Sand-Water Mixtures and Their Conductivity as a Function of Frequency and Petrophysical Properties

Dean Homan, John C. Rasmus, Gong Li Wang, Siddharth Misra, Yuteng Jin

Unconventional Resources Technology Conference (URTEC)

... laterolog and induction measurements (Cumella et al. 2018). We chose to simulate this type of formation by mixing small graphite flakes with spherical glass...

2021

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