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The AAPG/Datapages Combined Publications Database
Showing 3,548 Results. Searched 196,763 documents.
Re-evaluation of the Use of Undulatory Extinction and Polycrystallinity in Detrital Quartz for Provenance Interpretation
Abhijit Basu, Steven W. Young, Lee J. Suttner, W. Calvin James, Greg H. Mack
Journal of Sedimentary Research (SEPM)
... of transportation, deposition, diagenesis and later deformation are present. To evaluate this we have examined some ancient sandstones, of first cycle derivation...
1975
Rubble Bedding and Graded Bedding in Talara Formation of Northwestern Peru
J. M. Dorreen
AAPG Bulletin
... along the western flank of the Caleta Mero uplift, the axis of which is about a mile east. The exact derivation of t e "Rubble zone" must remain...
1951
Early Geomorphological Observations in Malaya: The Contributions of J.B. Scrivenor (1876 1950)
C. R. Twidale
Geological Society of Malaysia (GSM)
... the glacial and allochthonous derivation of the tin deposits of the Kinta valley, and the nature of limestone towers (Scrivenor, 1910, 1912; Jones, 1916...
2009
Lower Cretaceous Pelagic Limestones in Southern Belize: Proto-Caribbean deposits on the Southeastern Maya Block
A. Schafhauser, W. Stinnesbeck, B. Holland, T. Adatte, J. Remane
AAPG Special Volumes
.... The biomicritic limestones contain benthic foraminifers (e.g., orbitoids), which suggests derivation from the Campur Formation. The framework is grain...
2003
Petrographic Textures of Detrital Polycrystalline Quartz as an Aid to Interpreting Crystalline Source Rocks
Steven W. Young
Journal of Sedimentary Research (SEPM)
... suggest derivation from schists, and that sutured and elongated crystals in detrital polycrystalline quartz grains indicated a metamorphic origin...
1976
Nature of Feldspar-Grain Size Relations in Some Quartz-Rich Sandstones
I. Edgar Odom, Thomas W. Doe, Robert H. Dott, Jr.
Journal of Sedimentary Research (SEPM)
... Sandstone, the feldspar is predominantly in the coarse silt size but is associated with medium to fine-grained quartz. This relation implies derivation...
1976
Pelagic Chalks and Calciturbidites from the Lower Tertiary of the Troodos Massif, Cyprus
A. H. F. Robertson
Journal of Sedimentary Research (SEPM)
... precludes their derivation from anywhere far to the north. Taken together, the field relations imply that the source areas lay along the northern margin...
1976
Paleoclimate Interpretation from a Petrographic Comparison of Holocene Sands and the Fountain Formation (Pennsylvanian) in the Colorado Front Range
Gregory H. Mack, Lee J. Suttner
Journal of Sedimentary Research (SEPM)
... of the Fountain samples from this area in the plutonic field suggests derivation from a granite or granodiorite. Samples of both the Holocene sand...
1977
Identification of Producible and Bypassed Pay Oil Zones in the Smackover Formation by Using API Gravity Determined on Core Samples Together with Determination of Recoverable Oil Reserves through Pyrolysis Analysis
Albert Maende, Wesley Ingram, W. David Weldon
GCAGS Transactions
...). A derivation of the five HAWK–PAM pyrolysis peaks is used to predict API gravity. The correlation of API gravity derived from HAWK–PAM parameters...
2023
Inverse Grading and Hydraulic Equivalence in Grain-Flow Deposits
Asbury H. Sallenger, Jr.
Journal of Sedimentary Research (SEPM)
... no theoretical justification was presented, Bagnold assumed that equation I is also valid for grains of mixed size. The following derivation assumes...
1979
Magnetic Susceptibility and Particle-Size Distribution in Recent Sediments of the Loch Lomond Drainage Basin, Scotland
R. Thompson, D. J. Morton
Journal of Sedimentary Research (SEPM)
...) or down a core (Fig. 9). The derivation of primary magnetic minerals from bedrock, till or top soil is the preferred explanation as the soils...
1979
Cenozoic Sedimentation in the Pacific Ocean: Steps Toward a Quantitative Evaluation
Thomas R. Worsley, Thomas A. Davies
Journal of Sedimentary Research (SEPM)
...) (See Van Andel and others, 1975, for a discussion of the derivation of this relationship.) Accumulation rates are calculated for each 3-million year...
1979
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)
... contact (Russell, 1979) between sediment deposited before and after the area was inhabited by settlers of European derivation (Table 2). For pollen...
1980
Introduction: Part I. Genesis of Petroleum, Compiled by Robert H. Dott
Hollis D. Hedberg
AAPG Special Volumes
... Formation) and other non-marine sources are given. Eckelman and others (1962) suggested that C13-C12 ratios favored a derivation of crude oils from...
1969
Oil Occurrences in Coal Measures of England
P. E. Kent
AAPG Bulletin
... although one in which the ultimate derivation of the oil is uncertain. The coal field is on the southwestern edge of the Carboniferous basin of northern...
1954
World Crude Oil Resources: U.S. Geological Survey Estimate and Procedures
Charles D. Masters
AAPG Special Volumes
... and necessary field sizes. This problem can be solved through statistical derivation. Regardless of what assessment techniques are used...
1986
Mineralogical Analysis of Suspended Cohesive Sediment Using an Analytical Electron Microscope
Robert Bryant, David J. A. Williams
Journal of Sedimentary Research (SEPM)
... (and therefore sedimentation behavior) due to an extremely large particle number concentration. CONCLUSIONS 1) The derivation of the mineral composition...
1982
Patterns of Quartz Sand Shape Variation, Long Island Littoral and Shelf
Debra D. Riester , R. Craig Shipp , Robert Ehrlich
Journal of Sedimentary Research (SEPM)
... sand grains may reflect either the dominance of littoral/coastal-plain abrasion processes or perhaps derivation from underlying Tertiary or Mesozoic...
1982
Development Economics: Chapter 11: Part III. Economic Aspects of the Business
Field Roebuck
AAPG Special Volumes
... and development projects lie in the derivation and the values of the probabilities assigned to the various outcomes. Table 7. Estimated Future Net Cash...
1992
Analysis of Radioactive Sources in Aeroradiometric Surveys Over Oil Fields
Alan F. Gregory
AAPG Bulletin
... s but rather are inherent in the sediments as a consequence of their modes of derivation from the parent rock. This is suggested by the close...
1956
Experimental Compaction of Ooids Under Deep-burial Diagenetic Temperatures and Pressures
Ajit Bhattacharyya , Gerald M. Friedman
Journal of Sedimentary Research (SEPM)
... to its place of derivation (Friedman 1975; Mimran 1977). It is not uncommon to find lateral and vertical gradational changes from porous to dense...
1984
A Nomogram for Interpreting Slope Stability of Fine-Grained Deposits in Modern and Ancient Marine Environments
James S. Booth, Dwight A. Sangrey, James K. Fugate
Journal of Sedimentary Research (SEPM)
..., and is the angle of internal friction with respect to effective stress (i.e., tan is the coefficient of friction). The derivation of the equati n may...
1985
Quartz Provenance Changes Through Time: Examples from Two South Carolina Barrier Islands
M. M. Smith, R. Ehrlich, R. Ramirez de Arellano
Journal of Sedimentary Research (SEPM)
..., it was initially thought that the upward increase in percentages of smooth sand indicated derivation from angular grains by progressive in situ abrasion...
1985
Hemipelagic Rocks at Bissex Hill, Barbados: Sedimentology, Geochemistry, and Depositional Environment
Catherine W. Gortner , David K. Larue
Journal of Sedimentary Research (SEPM)
... range from 0.669 to 0.888, indicating terrigenous derivation (Fig. 12). According to Barrett (1981), an Fe/Al ratio of greater than 0.381 suggests...
1986
Thermal Subsidence: Chapter 4
Charles L. Angevine, Paul L. Heller, Chris Paola
AAPG Special Volumes
... is inconsistent with the derivation of equation 4.2, which retains small terms. After making the appropriate substitutions and integrating equation 4.7...
1990