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The AAPG/Datapages Combined Publications Database
Showing 17,702 Results. Searched 200,599 documents.
Distribution and Origin of Magnetite Spherules in Air, Waters, and Sediments of the Greater New York City Area and the North Atlantic Ocean
John H. Puffer, Emily W. B. Russell, Michael R. Rampino
Journal of Sedimentary Research (SEPM)
... when viewed through an optical microscope (Fig. 2). About 25 percent of the spherules found in most samples are frosted or pitted or appear to have...
1980
Deep-Sea Bottom-Currents Differentiated from Texture of Underlying Sediment
Christopher R. Blaeser, Michael T. Ledbetter
Journal of Sedimentary Research (SEPM)
... on a fourth-degree correlation matrix of different parameters to draw inferences about the main factors controlling skewness and hence inferred velocity...
1982
Techniques for Modeling Compaction Applied to the Pinnacle Reef/Carbonate/Evaporite Environment: Chapter 6
David E. Hamilton, William G. Riehl
AAPG Special Volumes
.... The technique for doing this is a series of steps which apply an estimate of percent compaction to a unit. The steps involve restoring the compacted unit...
1992
Mud Volcano Clay, Trinidad, West Indies
Paul F. Kerr , Isabella M. Drew , Darlene S. Richardson
AAPG Bulletin
.... The formation samples contain 55-69 percent < 2µ material, but the mud-volcano samples, possibly because of mixing with silt and fine sand during extrusion...
1970
Clay Mobility in Ridge Route Landslides, Castaic, California
Paul F. Kerr , Isabella M. Drew
AAPG Bulletin
... of the clay that contains these minerals exceeds 50 percent, the cone shear resistance drops to 0.001 to 0.1 tsf, whereas at 20-35 percent water content...
1972
The Illite/Smectite Geothermometer—Concepts, Methodology, and Application to Basin History and Hydrocarbon Generation
Richard M. Pollastro
Rocky Mountain Section (SEPM)
... illite with a hexagonal morphology. Factors controlling smectite-to-illite reaction Primary factors controlling the reaction are temperature...
1990
Reservoir Rock Potential of the Paleozoic-Mesozoic Sandstone of the Southern Flank of the Central Range, Irian Jaya
H. Panggabean, A. Sufni Hakim
Indonesian Petroleum Association
.... A number of factors controlling porosity gradient may be temperature (geothermal gradient), pressure, chemical composition of sandstones and pore-fluid...
1986
Fossil Beach Placers in Sandstones of Late Cretaceous Age in Wyoming and Other Rocky Mountain States
Robert S. Houston, John F. Murphy
Wyoming Geological Association
... percent heavy minerals) to high grade (more than 50 percent heavy minerals) which may be related to the regressive sequence (Fig. 2). For example...
1970
Composition, Grain Size, Roundness, and Sphericity of the Potsdam Sandstone (Cambrian) in Northeastern New York
Donald R. Wiesnet
Journal of Sedimentary Research (SEPM)
... (fig. 1), using thin-section techniques. Several factors affect the mapping of the Potsdam Sandstone: outcrops are generally scarce; mappable zones...
1961
The Carbonate Minerals of Deep-Sea Bioclastic Turbidites, Southern Blake Basin
Ter-Chien Huang, J. W. Pierce
Journal of Sedimentary Research (SEPM)
..., K. E., 1952, A solid solution between calcite and dolomite: Jour. Geology, v. 60, p. 190-192. CHAVE, K. E., 1962, Factors influencing the mineralogy...
1971
The Nature and Occurrence of Heavy Minerals in Pleistocene and Holocene Sediments of the Lower Georgia Coastal Plain
John R. Hails, John H. Hoyt
Journal of Sedimentary Research (SEPM)
..., 1 or 5 percent levels between the respective counts of each slide. Figures 2 to 10, which show the percentage occurrence (by number) of heavy...
1972
Origin of Discontinuity Surfaces in Limestones: Isotopic and Petrographic Data, Pleistocene of Barbados, West Indies
P. E. Videtich, R. K. Matthews
Journal of Sedimentary Research (SEPM)
... for carbon and oxygen and correction factors for mass spectrometric analysis of carbon dioxide: Geochim. Cosmochim. Acta, v. 12, p. 133-149. DAVIES, G. R...
1980
Geology of Oil Fields of West Siberian Lowland
Parke A. Dickey
AAPG Bulletin
..., factors affecting their formation and basin classification, in Geology of giant petroleum fields: Am. Assoc. Petroleum Geologists Mem. 14, p. 502-528...
1972
Carbonate Bank Sedimentation, Eastern Shark Bay, Western Australia
G. R. Davies
AAPG Special Volumes
... contain up to 30 percent by weight of fine particles (<62µ), most of which are silt-size skeletal fragments of magnesium-calcite composition. Older...
1970
A Numerical Method of Classification Using Qualitative and Semi-Quantative Data, as Applied to the Facies Analysis of Limestones
G. F. Bonham-Carter
CSPG Bulletin
... analysis using these data produces 5 groups of samples that correspond closely (86 percent) with Purdy's original facies. Anomalous samples are either close...
1965
Sediments of Three Bays of Baja California: Sebastian Viscaino, San Cristobal, and Todos Santos
K. O. Emery, D. S. Gorsline, E. Uchupi, R. D. Terry
Journal of Sedimentary Research (SEPM)
... snappers and dredges. Some dredge and snapper samples from the bays were also made available from the files of Allan Hancock Foundation. About 20 percent...
1957
Evaluation of Boron as a Paleosalinity Indicator and its Application to Offshore Prospects
C. T. Walker
AAPG Bulletin
... to the burette. The decrease in volume indicates the amount of carbon dioxide evolved. To facilitate calculations the burette is graduated to read percent...
1968
Discrimination of Depositional Environments Using Settling Tube Data
Asahiko Taira , Peter A. Scholle
Journal of Sedimentary Research (SEPM)
... used for environmental analysis (e.g., mean value and sorting) were found to be more influenced by provenance factors than by environmental factors...
1979
Petrology of the Paleocene-eocene Aquia Formation of Virginia, Maryland, and Delaware
John W. Drobnyk
Journal of Sedimentary Research (SEPM)
.... Glauconite content of the sand grades of the Aquia samples ranges from approximately 20 percent to 70 percent. Lateral and vertical changes in glauconite...
1965
Petrography and Origin of the Tuscarora, Rose Hill, and Keefer Formations, Lower and Middle Silurian of Eastern West Virginia
Robert L. Folk
Journal of Sedimentary Research (SEPM)
... count of thin sections. A different method was used for constituents less than approximately 5 percent. A microscope ocular was used with a grid...
1960
Worldwide Geological Experience as a Systematic Basis for Prospect Appraisal
D. Sluijk, M. H. Nederlof
AAPG Special Volumes
... the hydrocarbon charge is considered to be the product of four factors. The first two factors cover generation and expulsion, the last two migration: 1...
1984
Abstract: Organic Matter in Bottom Sediments, Choctawhatchee Bay, Florida
James G. Palacas
GCAGS Transactions
... in the nearshore sandy sediments. The finer grained sediment or muds are characterized by average contents of 3.5 percent organic carbon, 0.32 percent total...
1967
ABSTRACT: Mechanism of Hydrogen Gas Generation in Coalbed Methane Desorption Canisters Causes and Remedies
Basim Faraj, Anna Hatch, Derek Krivak, Paul Smolarchuk
The Society for Organic Petrology (TSOP)
..., Cochrane, Alberta T4C1N7 Canada Hydrogen gas (H2) was detected in desorption canisters in various proportions (between ~0.1 percent and 82 percent...
2003
Dynamics of Change in Level of Barents Sea in Mesozoic and Cenozoic
A. G. Korvatskiy
Petroleum Geology: A Digest of Russian Literature
.... Total area of marine sedimentation in the Barents region was 1,108,350 sq km. More than 50 percent of this area (591,000 sq km) was a shallow-water...
2003
Organic Matter in Bottom Sediments, Choctawhatchee Bay, Florida: ABSTRACT
James G. Palacas
AAPG Bulletin
... in the nearshore sandy sediments. The finer grained sediment or muds are characterized by average contents of 3.5 percent organic End_Page 2167...
1967