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The AAPG/Datapages Combined Publications Database

Showing 6,047 Results. Searched 200,599 documents.

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Scaling laws of karst dissolution features: Evidence from three-dimensional unmanned aerial vehicle imaging and ground-penetrating radar analyses

Juliana A. G. Lopes, Walter E. Medeiros, Renato R. S. Dantas, Josibel G. Oliveira, Jr., Flávio L. Santana, and Francisco H. R. Bezerra

AAPG Bulletin

... existing hyperbolas resulting from diffraction in nonmigrated sections. Time-depth conversion was performed using this velocity value. Due to minimal...

2025

Chemostratigraphy of Carbonate Gravity Flows of the Wolfcamp Formation in Crockett County, Midland Basin, Texas

Alex P. Blizzard, Julie M. Bloxson

GCAGS Transactions

... diffraction, and scanning electron microscopy at resolutions based on chemofacies defined by hierarchical clustering analyses. Interpretation of chemofacies...

2020

Mississippian mud rocks of the eastern Great Basin: Stratigraphy, tectonic significance, and hydrocarbon potential

Don E. French, James H. Trexler Jr., Patricia H. Cashman, Jerome P. Walker, and Albert S. Wylie Jr.

AAPG Bulletin

... locations that were sampled for x-ray diffraction and source-rock analysis for this study. See Table 1 for a list of correlation locations, numbered 1–9...

2020

Carbonate Sediments in the Capricorn Reef Complex, Great Barrier Reef, Australia

W. R. Maiklem

Journal of Sedimentary Research (SEPM)

...., 1963, The interpretation of grain size distribution curves of clastic sediments: Jour. Sedimentary Petrology, v. 33, p. 180-190. SWINCHATT, J. P., 1965...

1970

Implications of Thin Laminations on Pore Structure of Marine Shale Reservoir: Goldwyer Formation Case Study from Western Australia

Muhammad Atif Iqbal, Reza Rezaee, Gregory Smith, Partha Pratim Mandal

Australian Petroleum Production & Exploration Association (APPEA) Journal

... Australia. A multiscale approach included image logs, core descriptions, thin sections, scanning electron microscope and X-ray diffraction analysis...

2021

Interpretation of the Origin and Diagenesis of Pleistocene Chalk, Eniwetok Atoll, Marshall Islands

Patricia E. Videtich , Edward L. Tremba

Journal of Sedimentary Research (SEPM)

... curves of the weight %'s of the size fractions. End_Page 318------------------------ Apatite rosettes (tentatively confirmed by x-ray diffraction...

1978

Siderite Concretions: Indicators of Early Diagenesis in the Gammon Shale (Cretaceous)

Donald L. Gautier

Journal of Sedimentary Research (SEPM)

...., 1979, The age curves of sulfur and oxygen isotopes in marine sulfate and their mutual interpretation: Chemical Geology, v. 28, p. 199-260. COBBAN, W...

1982

Deriving Elastic and Petrophysical Properties From Small Sample Volumes Using Digital Rock Analysis

Vegar Ravlo, Pål-Eric Øren, Cathrine Ringstad

Unconventional Resources Technology Conference (URTEC)

... Abbreviations: Ill = Illite, Orth = Orthoclase, Anh = Anhorite, Clin = Clinoptiolite. The X-ray diffraction (XRD) results of the clay fraction shows that 51.4...

2022

Soil moisture retention characteristics of saprock from the weathering profile over a biotite-muscovite granite in Peninsular Malaysia

John Kuna Raj

Geological Society of Malaysia (GSM)

... of saprolite (IC soil horizon), samples were collected from 16 locations in the Peninsula and their soil moisture retention curves determined...

2021

Determination of Montmorillonite in Small Samples and Implications for Suspended-matter Studies

Brian E. Tucholke

Journal of Sedimentary Research (SEPM)

... for montmorillonite, illite, kaolinite and chlorite by X-ray diffraction of samples on silver filters. The results indicate that samples with concentrations...

1974

Depositional Setting and Origin of Berthierine Oolitic Ironstones in the Lower Miocene Terengganu Shale, Tenggol Arch, Offshore Peninsular Malaysia

Mazlan B. Hj. Madon

Journal of Sedimentary Research (SEPM)

... diffraction and scanning electron microscopy with energy-dispersive x-ray analyzer for mineral identification. Palynological identifications were made...

1992

Textures, Mineralogy, and Reservoir Properties of an Altered Mafic Tuff Core from the Upper Cretaceous (Lower Campanian) of Central Texas

Robert M. Reed, Robert G. Loucks

GCAGS Journal

... lithologies were selected and sent to QMinerals BV (Heverlee, Belgium) for quantitative X–ray diffraction analysis. Sample preparation for bulk...

2022

Waveland Field: An Analyses of Facies, Diagenesis, and Hydrodynamics in the Mooringsport Reservoirs

Lawrence R. Baria

GCAGS Transactions

... discharge which spread over much of the Mooringsport lagoon. X-ray diffraction analyses of constituent Mooringsport clays indicate that kaolinite is found...

1981

Improvements to Formation Evaluation, Almond Formation, Green River Basin, Wyoming

William P. Iverson, Thomas L. Dunn, Ronald C. Surdam

Wyoming Geological Association

... support calculations of gross gas-in-place from volumetric techniques using well logs. Capillary pressure curves obtained with mercury injection...

1995

VII. Quantitative Stratigraphic Correlations

Norman S. Neidell

AAPG Special Volumes

... is amplitude encoded. From synthetic-seismogram studies of this type, we can develop sets of calibration curves as are now illustrated. The vertical...

1979

Geology of the Johan Sverdrup field: A giant oil discovery and development project in a mature Norwegian North Sea basin

Signe Ottesen, Brit Selvikvåg, Anthony S. J. Scott, Renata Meneguolo, Alex Cullum, Alejandro Amilibia-Cabeza, Mario Vigorito, Andreas Helsem, and Ole J. Martinsen

AAPG Bulletin

... Basin). TWT = two-way traveltime; Unc. = Unconformity. The Utsira high area has a prolonged multirift history beginning in the Devonian...

2022

Monterey Formation porcelanite reservoirs of the Elk Hills field, Kern County, California

S. A. Reid, J. L. McIntyre

AAPG Bulletin

... is at the top of the A unit. Stratigraphic thicknesses and measured depths are in feet. Log curves are SP (left) and resistivity. Depositional...

2001

Grain size and mineral variability of glacial marine sediments

John T. Andrews, Wendy J. Roth, Anne E. Jennings

Journal of Sedimentary Research (SEPM)

... size and quantitative X-ray diffraction (qXRD) methods require only ≤ 1 g of sediment and thus analyses assume that the identification of coarse sand...

2023

Petrographic Comparison of Some Loess Samples from Western Europe with Kansas Loess

Ada Swineford, John C. Frye

Journal of Sedimentary Research (SEPM)

...), Fifteen samples of loess collected in 1952 in Italy, France, Germany, and Belgium were studied by mechanical and chemical analysis, X-ray diffraction...

1955

Depositional, Diagenetic, and Production History of the Upper Morrowan Buckhaults Sandstone, Farnsworth Field, Ochiltree County Texas

Timothy Wayne Munson

Oklahoma City Geological Society

... of the sieve data were plotted and compared against the curves of modern depositional environments, developed through the work of Visher (1969), Visher...

1994

Quantitative Estimations of Clay Minerals by Diffraction Methods

W. D. Johns, R. E. Grim, W. F. Bradley

Journal of Sedimentary Research (SEPM)

...Quantitative Estimations of Clay Minerals by Diffraction Methods W. D. Johns, R. E. Grim, W. F. Bradley 1954 Vol. 24 No. 4. (December), The clay...

1954

Variation in Clay Mineral X-Ray Diffraction Results with the Quantity of Sample Mounted

Per R. Stokke , Bobb Carson

Journal of Sedimentary Research (SEPM)

...Variation in Clay Mineral X-Ray Diffraction Results with the Quantity of Sample Mounted Per R. Stokke , Bobb Carson 1973 Vol. 43 No. 4. (December...

1973

Core-Analysis Practices--Basic Methods and New Developments

T. A. Pollard , Paul P. Reichertz

AAPG Bulletin

... at A.I.M.E. Petroleum Branch New Orleans meeting, October 4. 12. KAUFMAN, A. J., AND DILLING, D. E. (1950), "Differential Thermal Curves of Certain...

1952

ABSTRACT: QUANTITATIVE X-RAY POWDER DIFFRACTION ANALYSIS OF MINERALS IN GUIZHOU PROVINCE COALS USING RIETVELD METHODS

Dangyu Song, Junying Zhang, Chuguang Zheng

The Society for Organic Petrology (TSOP)

...ABSTRACT: QUANTITATIVE X-RAY POWDER DIFFRACTION ANALYSIS OF MINERALS IN GUIZHOU PROVINCE COALS USING RIETVELD METHODS Dangyu Song, Junying Zhang...

2006

SEM, XRD, CL, and XF Methods: Part 5. Laboratory Methods

J. B. Thomas

AAPG Special Volumes

... grain and pore morphology affect permeability, see the chapter on "Permeability" in Part 5.) X-RAY DIFFRACTION (XRD) The principal advantage of XRD...

1992

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