Post-Depositional Subaerial Weathering Effects on the Mineralogy of an Upper Cretaceous Sand in Southeastern United States

Norman C. Hester

Journal of Sedimentary Research (SEPM)

... in near-surface sediments. Factors that would favor intensive weathering of minerals are (1) an extensive period of subaerial exposure, (2) high...

The Relation of Uranium Occurrences to Groundwater Flow Systems

J. Ladd Hagmaier

Earth Science Bulletin (WGA)

.... However, what happens to disseminated primary uranium minerals such as pitchblende and uraninite in near surface environments? They are easily oxidized...

Development and Relation of Oil Accumulation to Structure in the Shiprock District of the Navajo Indian Reservation, New Mexico

K. B. Nowels

AAPG Bulletin

... of dip, the amount of closure above the water line is the greatest in the field with the largest producing area. SURFACE ELEVATION Surface elevation...

Crystalline Basement Aquifer, Llano Uplift, Central Texas: An Overlooked Minor Aquifer of Texas

Brian B. Hunt

GCAGS Transactions

... generally have little primary porosity (storage) although groundwater is present in localized fractures and near-surface weathering layers...

Weathering of the Eaton Sandstone (Pennsylvanian), Grand Ledge, Michigan: Geochemical Mass-Balance and Implications for Reservoir Properties Beneath Unconformities

Jason R. Price, Michael A. Velbel

Journal of Sedimentary Research (SEPM)

...) at and near the surface. This model is also accepted by FIG. 5. Schematic summary of the weathering sequence for the Eaton Sandstone of Grand Ledge...

Abstract: Radiocarbon Dating of Estuarine Carbonate Materials, by H. J. Simpson, T. H. Peng, C. R. Olsen, S. C. Williams; #90972 (1976).

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Abstract: Geochemical and Mineralogical Studies on the Weathering of Granitic Rocks

Robert C. Harriss

Houston Geological Society Bulletin

...Abstract: Geochemical and Mineralogical Studies on the Weathering of Granitic Rocks Robert C. Harriss 1966 17 17...

Geothermal Parameters in the Powder River Basin, Wyoming

Richard W. Davis

Wyoming Geological Association

... gradients due to purely conductive heat flow may vary significantly from the calculated averages because of variations (1) in thickness of near-surface zones...

Application of Interferometric MASW to a 3D-3C Seismic Survey

Shaun Strong, Steve Hearn

Petroleum Exploration Society of Australia (PESA)

... image will be degraded due to lateral near-surface variations. We present a methodology which incorporates interferometry into the MASW method (IMASW...

Global Tectonics and Resources

W.S. Fyfe

Circum Pacific Council Publications

.... In a continental situation, deep fluxes must be diluted or concealed by near-surface flow of rainwater in the outer permeable layers. Only very deep...

Engineering Geology of Jordanelle Dam and Reservoir Bonneville Unit, Central Utah Project, Utah

Gary Dow

Utah Geological Association

... elevation. The water table is generally only a few feet below the surface. Near the upstream toe area of the dam on the west side of the valley, prior...

Abstract: Detailed Mapping of Volcanic Ash Distribution in Lenggong and Kuala Kangsar Areas (Paper P39)

Norishah Hashim, Ros Fatihah Muhammad, H. D. Tjia, Omar Alkouri

Geological Society of Malaysia (GSM)

... than 4 m mostly, in the valley area. Ash is more common at low elevation which is in vicinity of Perak River banks and on gentle slopes of palm oil...

Abstract: Magnitude of Tectonic Uplift Events Along Passive Margins Estimated from Analysis of Base-Level Governed Erosion Surfaces, by Johan M. Bonow and Peter Japsen; #90082 (2008)

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NEAR SURFACE MINERAL POTENTIAL OF THE PLAINS OF WESTERN CANADA, WITH SPECIAL REFERENCE TO SASKATCHEWAN

M.J. MILLARD, M.A. SIMPSON, B.T. SCHREINER, AND W.A.D. EDWARDS

Saskatchewan Geological Society

...NEAR SURFACE MINERAL POTENTIAL OF THE PLAINS OF WESTERN CANADA, WITH SPECIAL REFERENCE TO SASKATCHEWAN M.J. MILLARD, M.A. SIMPSON, B.T. SCHREINER...

Detrital Clay Coats, Clay Minerals, and Pyrite: A Modern Shallow-Core Analogue For Ancient and Deeply Buried Estuarine Sandstones

Joshua Griffiths, Richard H. Worden, Luke J. Wooldridge, James E. P. Utley, Robert A. Duller

Journal of Sedimentary Research (SEPM)

... how detrital clay coats and clay minerals (chlorite, illite, kaolinite, and smectite) are distributed in the near-surface (one meter cores; n = 23...

Abstract: Climate and Predictive Stratigraphy

Matt Matthews

Houston Geological Society Bulletin

... in weathering, runoff, and the water balance of the basin system. Climatic change over periods of thousands to hundreds of thousands of years has been...

State of Seismic Prospecting

Andrew Gilmour

AAPG Bulletin

.... This travel time then undergoes correction for weathering, for elevation, and for frequency variations, and is compared with the travel times from near...

Biogenic Contribution of CO2 in Alpine Weathering

Paul Mankiewicz , Robert E. Sweeney

Journal of Sedimentary Research (SEPM)

... at 10,200-ft elevation. During subsequent surface flowage, the spring water re-equilibrates, both isotopically and chemically, with atmospheric CO2. FETH, J...

Application of multi-element geochemistry in the weathered environment: Controls, considerations and implications for exploration

Fiona Best, Matthew Readford, Kristina Walcott

Petroleum Exploration Society of Australia (PESA)

... exploration case studies, to demonstrate how: (1) chalcophile and pathfinder element mobility in the near-surface weathered environment impacts...

Appendix A: Considerations for Optimum 3-D Survey Design, Acquisition and Processing

R. Malcolm Lansley

AAPG Special Volumes

... signal. Significant energy absorption and loss of high frequencies also occurs in the unconsolidated weathering layers near the surface. If the geophones...

ABSTRACT: Predicting Sandstone Reservoir Quality: A Case History Using the Shallow Marine Devonian Jauf Formation in Ghawar Field, Saudi Arabia, by van Dijk, Clemens P.; Breuer, Pierre; #90141 (2012)

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Dual Origin of Basin and Range Faults

Gary W. Crosby

Utah Geological Association

... it is realized that the cratonward edge of the fold and thrust belt is at an average surface elevation nearly 1900 feet above the average elevation...

Defining Paleo-Exposures and Paleo-Aquifers in Carbonates with Isotopic and Cationic Data: A Brief Review

Paul D. Wagner

Rocky Mountain Association of Geologists

... in the subsurface. Diagenetic alteration can have occurred at an early time near or at the surface, or much later in the paragenetic sequence under...

Lithological and Geochemical Aspects of the Upper Devonian Torquay Formation, Saskatchewan

James E. Christopher

Journal of Sedimentary Research (SEPM)

... of intraformational weathering acting under conditions of alternating oxidation and reduction. BRINDLE, J. E., 1960, Mississippian megafaunas...

The Use and Limitations of Non-Seismic Geophysics in the Papuan Thrust Belt

A. J. Billings, J. H. Thomas

Papua New Guinea (PNG) Petroleum Convention Proceedings

... the signal to noise ratio. Probably the most im portant factor is the near surface karstification which is believed to channel both the downgoing...