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The AAPG/Datapages Combined Publications Database

Showing 3,221 Results. Searched 201,044 documents.

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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

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

A Quantitative Study of Compaction with Depth in a Vesicular Sand Layer in an Intertidal Area of Dublin Bay, Ireland

Colin R. Harris

Journal of Sedimentary Research (SEPM)

... estimation chart and a division between vesicles and non-vesicles (channel-pores) made. The vesicles were divided by the chart into spherical, ellipsoidal...

1974

A Coupled Pore-Scale Modelling Approach to Capture Macro-Scale Stress-Dependent Permeability of Rocks

Keivan Khaleghi, Stephen Talman, Alireza Rangriz Shokri, Bauyrzhan K. Primkulov, Abel S. Juncal, Rick J. Chalaturnyk

Unconventional Resources Technology Conference (URTEC)

... of a reservoir on the pore space deformation and absolute permeability of rocks formed by spherical grains. Comparable to commonly used thin sections...

2019

Petrophysical Interpretation of Multi-Frequency Electromagnetic Measurements in Clay- and Conductive-Mineral-Rich Mudrocks

Siddharth Misra, Yifu Han

Unconventional Resources Technology Conference (URTEC)

... conductivity (σeff) and dielectric relative permeability (εr,eff) of geomaterials containing uniformly distributed conductive spherical, rod-like...

2016

Traveltime Computations for Locating the Source of Micro Seismic Events and for Forming Gridded Traveltime Maps

John C. Bancroft

Search and Discovery.com

... of an event, based on the assumption that the event creates a spherical wavefront which is recorded by a number of receivers with fixed locations. This method...

Unknown

Traveltime Computations for Locating the Source of Micro Seismic Events and for Forming Gridded Traveltime Maps

John C. Bancroft

Search and Discovery.com

... of an event, based on the assumption that the event creates a spherical wavefront which is recorded by a number of receivers with fixed locations. This method...

Unknown

Abstract: Microbial Biomineralization Processes of Stromatolitic Dolostone from the Ediacaran Period in Sichuan Basin, Southeast China;

Jie Zhang

Search and Discovery.com

... the microstructure of stromatolitic dolostone and found abundant spherical, oval-like dolomites, the size of which are 5-15 microns. The Mg/Ca ratios...

Unknown

Abstract: Depositional Setting and Paragenesis of Silica Nodules from the Middle Jurassic Curtis Formation on the Eastern Flank of the San Rafael Swell, Central Utah; #91201 (2022)

Eric Stautberg, Marsha French, and Mindy Solomon

Search and Discovery.com

... sinters ceased. In thin section, silica nodules in these beds exhibit two distinctive botryoidal morphologies: 1) a spherical crystal with radial...

Unknown

Composition of Oil Shales: GEOLOGICAL NOTES

Bureau of Mines

AAPG Bulletin

... spherical bodies, regarded as algae, spores, or globules of oil. 3. Irregular streaks of reddish-yellow, dark-brown, or opaque material. 4. Shells...

1923

Memoir 71, Chapter 21: Effect of Wettability on Scale-Up of Multiphase Flow From Core-Scale to Reservoir Fine-Grid Scale

Y. C. Chang, V. Mani, and K. K. Mohanty

AAPG Special Volumes

...-point variogram. Variogram models of both finite (spherical) and infinite (fractal) correlation lengths are included as special cases. Local core-scale...

1999

Abstract: Some Organic Geochemical Thoughts on Concretions from New Zealand

Michael J. Pearson

Geological Society of Malaysia (GSM)

... variety of concretionary bodies occur in the Miocene strata of New Zealand ranging from a few cm to 10 m in size. Some of these are classic spherical...

2012

Miocene Spumellarian Radiolaria from South Pacific: ABSTRACT

Joyce R. Blueford

AAPG Bulletin

... of more pronounced characters. Spumellarian (spherical) radiolaria, however, have not been regrouped mainly because their morphology is more subtle...

1980

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