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The AAPG/Datapages Combined Publications Database

Showing 1,479 Results. Searched 200,621 documents.

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Bouguer Gravity Anomalies and Crustal Structure in Northwestern Mexico: Chapter 11: Part III. Regional Geophysics and Geology

Robert Wayne Schellhorn, Carlos L. V. Aiken, Mauricio F. de la Fuente

AAPG Special Volumes

... Trip Guidebook, p. 59-68. Ben-Avraham, Z., Z. Garfunkel, G. Almagor, and J. K. Hall, 1979, Continental breakup of a leaky transform: The Gulf of Elat...

1991

Late Mississippian Prodeltaic Rhythmites in the Appalachian Basin: A Hierarchical Record of Tidal and Climatic Periodicities

Daniel J. Miller, Kenneth A. Eriksson

Journal of Sedimentary Research (SEPM)

... wit a digital micrometer on polished slabs or on the outcrop from the midpoints of the clay-dominated intervals. Fast Fourier Transform and Maximum...

1997

Aeolian Delivery of Sand to Pre-Silurian Stable Shelves Resolves Apparent Paradoxical Occurrence of Transgressive Sheet Sands: Abstract

J. M. Mazzullo, Robert Ehrlich

CSPG Special Publications

... of rate of deposition. An analysis of the morphology of quartz grains (using Fourier and SEM techniques) from samples from the St. Peter Sandstone...

1986

The Sample Support Problem  for Permeability Assessment  in Sandstone Reservoirs

Y. Anguy, R. Erlich, C. M. Prince, V. L. Riggert, and D. Bernard

AAPG Special Volumes

... sample size can be determined by measuring the scales of structural complexity using Fourier transforms of the image of the porous microstructure...

1994

Sources of Shoaling in Charleston Harbor, Fourier Grain Shape Analysis: REPLY

Robert Ehrlich, P. Jeffrey Brown

Journal of Sedimentary Research (SEPM)

...Sources of Shoaling in Charleston Harbor, Fourier Grain Shape Analysis: REPLY Robert Ehrlich, P. Jeffrey Brown 1979 Vol. 49 No. 2. (June), COLQUHOUN...

1979

Determination of Relative Provenance Contributions in Samples of Quartz Sand Using Q-mode Factor Analysis of Fourier Grain Shape Data

Carolyn Brauer Hudson, Robert Ehrlich

Journal of Sedimentary Research (SEPM)

...Determination of Relative Provenance Contributions in Samples of Quartz Sand Using Q-mode Factor Analysis of Fourier Grain Shape Data Carolyn Brauer...

1980

Estimation of Heat Flow in Oil Wells Based on Relation Between Heat Conductivity and Sound Velocity: ABSTRACT

J. J. H. C. Houbolt, P. R. A. Wells

AAPG Bulletin

... with formation temperature for most sedimentary rocks. End_Page 1360------------------------------ Combination of this assumption with Fourier's heat...

1981

Tuscarora Sandstone (Silurian), Central Pennsylvania: Preliminary Quantitative Grain Shape Analyses of Cotter's (1982) Facies--Fluvial, Estuarine, Beach, and Marine(?) Shelf: ABSTRACT

James M. Parks, Robert A. Gallagher, Edward Cotter

AAPG Bulletin

... unmodified. Preliminary results comparing the Fourier Analysis (FA) methods of Ehrlich and colleagues (1970 to 1982) and Boon (1982) with the Rotat d...

1982

Relationship of Morphologic Variation and Environment in Recent Bolivina (Foraminiferida) from Northwestern Gulf of Mexico: ABSTRACT

Anthony C. Gary, Nancy Healy-Williams

AAPG Bulletin

..., was quantified by an automated video digitizer using closed-form Fourier series anal ses. Significant variations in shape outline components were tested...

1984

Morphostratigraphy of Foraminifera Via Automated Image Analysis: ABSTRACT

N. Healy-Williams, L. Robbins, R. Ehrlich

AAPG Bulletin

... specimens per hour. The subsequent analysis of shape changes is via closed-form Fourier se ies and multivariate statistical techniques. Through...

1984

COGS--Computer Oriented Geological Society: ABSTRACT

James A. Thomson

AAPG Bulletin

... statistics, interactive geophysical modeling, double-Fourier analysis, and telecommunications, among others. Future presentations will include expert systems...

1984

Distinction of Glacial and Interglacial Cycles in Feni and Gardar Drifts, North Atlantic: ABSTRACT

Margaret R. Eggers, Robert Ehrlich

AAPG Bulletin

.... Fourier shape analysis on quartz silts, augmented by SEM, showed that each sample consists of a mixture of 3 grain populations. One grain type...

1985

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