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The AAPG/Datapages Combined Publications Database
Showing 31,900 Results. Searched 200,691 documents.
Saturated hydraulic conductivity (Ks) of earth materials in the weathering profile over quartz-mica schists of the Seremban area, Negeri Sembilan
John Kuna Raj
Geological Society of Malaysia (GSM)
... 16.2 m thick and consists of in situ, moderately to highly weathered quartz-mica schists marked by steeply dipping to vertical bands of variable...
2020
Provenance and Diagenesis of Clay Minerals in Sediments from the Anclote River and Anchorage, West Central Florida
Wen-An Chiou , Larry J. Doyle , William R. Bryant
GCAGS Transactions
... chlorite, chlorite-vermiculite mixed layer, and illite increase. This change results from the combined effects of tidal inflow and transport...
1981
Forward Hydro-Mechanical Modeling of a Rising Salt Diapir Considering the Effect of Basin Sand Layers
Search and Discovery.com
N/A
Influence of Geological Factors on Longitudinal Seismic Velocities
B. B. Weatherby , L. Y. Faust
AAPG Bulletin
... velocities followed the mean closely. Because of the presence near the surface of the weathered layer of rather indefinite extent, some question may exist...
1935
Frequency-Domain Waveform Tomography in the Foothills: Velocity Model Estimation with Synthetic Long-Offset Data
Search and Discovery.com
... the weathered layer and underlying formations. Source energy can become “trapped” in the near-surface, reducing the amount of energy propagating...
2013
Field Trip Guide for the Monterey Formation, Santa Barbara Coast, California
Caroline M. Isaacs
Pacific Section of AAPG
... compositional and diagenetic differences among rocks and to observe general effects of weathering. Five major localities will be visited in progressive...
1981
Composition, Diagenesis, and Weathering of the Sediments and Basement of the Callabonna Sub-Basin, Central Australia: Implications for Landscape Evolution
Eric Tonui,,, Patrice De Caritat,§
Journal of Sedimentary Research (SEPM)
..., and sand comprising sandy, mottled, and gray clay units overlain by Quaternary soil. The basement consists of weathered Proterozoic schist, gneiss...
2003
Prospecting for Iron Ore in the Bedong Area, Kedah Using Geophysical Techniques
C. Y. Lee, I. H. Abdoul-Fatah
Geological Society of Malaysia (GSM)
... layer is barren homogeneous clay, possibly weathered shale bedrock (Bean, 1969; Bradford, 1972). More recent mining activities in adjacent areas have...
2002
Evaporite-Solution Brecciation and Devonian Carbonate Reservoir Porosity in Western Canada
F. W. Beales , A. E. Oldershaw
AAPG Bulletin
... of breccia layer in Fairholme dolostone. These breccias commonly are resealed and difficult to detect unless suitably weathered surfaces are available. Part...
1969
Petrology and Origin of Phosphorites
G. Donald Emigh
Utah Geological Association
... similar fields in the southeastern United States. (5) Surface and near surface weathered areas of all marine phosphorites - examples, Phosphoria...
1967
Clay Mineralogy of the Old Red Sandstone (Devonian) of Scotland
M. J. Wilson
Journal of Sedimentary Research (SEPM)
... of layer silicates. Spectrochim. Acta., v. 20, p. 1149-1173. FRIEND, P. F., 1966, Clay fractions and colours of some Devonian red beds in the Catskill...
1971
Quality of the Smirl Coal, Alton Coalfield, Kane County, Utah
Jeffrey C. Quick
Utah Geological Association
... the geographic variation of these coal quality parameters as well as areas with weathered coal where moisture contents are elevated. Local weathering...
2010
ABSTRACT: Active Diapirism Affected by Extension, Contraction, or Interlayer Slip: Results from Finite-Element Modeling, by D. D. Schultz-Ela; #91021 (2010)
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2010
ABSTRACT: Inversion Tectonics: Effects of Burial Depth and Inversion Magnitude on Fault-Fold Evolution, by N. J. Kuhle; #90909 (2000)
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2000
Guide to Late Pleistocene and Holocene Deposits of Turnagain Arm
Susan Bartsch-Winkler, Henry L. Schmoll
Alaska Geological Society
... the effects of the 1964 earthquake at Portage, southern Alaska, in Coonrad, W. L., ed., The U.S. Geological Survey in Alaska–Accomplishments during 1981...
1984
Fluvial reservoir architecture, directional heterogeneity and continuity, recognizing incised valley fills, and the case for nodal avulsion on a distributive fluvial system: Kern River field, California
D. K. Larue, J. Allen, D. Beeson, and J. Robbins
AAPG Bulletin
... for the field on a layer-by-layer basis (Figure 4, right). Variations in net-to-gross from approximately 0.45 to 0.8 occur in the succession in the earth model...
2023
Changes in soils and terrestrial landscapes of the Appalachian Basin (Conemaugh, Monongahela, and Dunkard groups), U.S.A., at the onset of the late Paleozoic climate transition
Daniel I. Hembree
Journal of Sedimentary Research (SEPM)
... to early Permian resulting from the destabilization of ice sheets in the Southern Hemisphere had important effects on terrestrial landscapes around...
2024
Dolomitization Patterns in Subtidal Bighorn Dolomite (Upper Ordovician), Southeastern Wind River Range, Wyoming: ABSTRACT
Donald H. Zenger
AAPG Bulletin
... in the matrix results in its lesser resistance. Where weathered tubes are even with or recessed below the matrix, pores in the matrix are filled...
1984
Abstract: Applications Of Forensic Chemistry For Petroleum Cases, by D. A. Zemo; #90928 (1999).
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1999
ABSTRACT: Influence of Illuviated Clays and Soil Cements on Hydraulic Conductivity in Sedimentary Saprolite, by K. H. Smith; #90909 (2000)
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2000
Reflections on the Interpretation of Heavy Mineral Analyses
Tj. H. Van Andel
Journal of Sedimentary Research (SEPM)
... the sequence: weathered layer--sedimentary and low rank metamorphics--high rank metamorphics and igneous, in the source areas. Numerous published studies...
1959
Depth of bedrock in the Seal Cove river valley, Newfoundland: a geophysical case study
E. Scott Schillereff, Hugh Miller, John E. Gale
Atlantic Geology
... electromagnetic and refraction hammer seismic methods. These geophysical interpretations, based on an assumed two-layer geometry, were compared with direct...
1987
9 References
P. E. Gretener
AAPG Special Volumes
..., p. 428-450. Birch, F., 1948, The Effects of Pleistocene Climatic Variations upon Geothermal Gradients; Am. J. Sci., 246, p. 729-760. Birch, F...
1981
The Oldest Marine Carbonate Ooids Reinterpreted as Volcanic Accretionary Lapilli, Onverwacht Group, South Africa
Donald R. Lowe, L. Paul Knauth
Journal of Sedimentary Research (SEPM)
.... They commonly show concentric internal structuring, including a nucleus, a relatively coarse-grained detritus layer made up of recrystallized vitric...
1978
Extended Abstract: Locating Faults in Louisiana Gulf Coast Quaternary Stratigraphy by Combination of Cone Penetrometer Tests with Borings and Chirp Seismic Data, Golden Meadow, Louisiana
Allison Scates, Rui Zhang
GCAGS Transactions
... Association of Geological Societies Transactions, v. 53, p. 262–276. Gagliano, S. M., 2005, Effects of earthquakes, fault movements, and subsidence on the South...
2019