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The AAPG/Datapages Combined Publications Database

Showing 3,548 Results. Searched 196,763 documents.

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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

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