Characterizing a weathering profile over the Kuantan Basalt

John Kuna Raj

Geological Society of Malaysia (GSM)

... composition extending upwards to the ground surface from the unaltered bedrock below known as the weathering profile (Ollier, 1969). Deep weathering profiles...

SEISMIC REFLECTION SURVEYING FOR OIL AND GAS FIELDS IN NORTH CENTRAL TEXAS

TED COUGHRAN

Fort Worth Geological Society

... situations for which one provides better results than the other. For example, if the near-surface weathering layer is erratic, deep hole (60-120 feet...

Weathering of the Great Pyramid

K. O. Emery

Journal of Sedimentary Research (SEPM)

... sandstones of varying resistances to weathering. As a result, the blocks exhibit several different surface textures. When the facing was removed approximately...

Geohydrology of Buried Triassic Basin at Savannah River Plant, South Carolina

I. Wendell Marine

AAPG Bulletin

... was complete, it was postponed indefinitely while major effort was turned toward alternative methods of waste storage, such as temporary, near-surface...

Underpressure in Mesozoic and Paleozoic rock units in the Midcontinent of the United States

Philip H. Nelson, Nicholas J. Gianoutsos, and Ronald M. Drake II

AAPG Bulletin

... by depth . Wherever H is at or near the surface elevation, then (H−Z)/D is nearly 1, (0.465 psi/ft), and the area is normally pressured. Where H...

Nuclear Magnetic Resonance: A Technique for Direct Nondestructive Evaluation of Source-Rock Potential

Francis P. Miknis , J. Ward Smith , Edwin K. Maughan , Gary E. Maciel

AAPG Bulletin

... are near-surface samples that have undoubtedly been subjected to greater recent weathering. Experience has shown that weathered surface samples...

MASS BALANCE CORRECTIONS APPLIED TO LITHOGEOCHEMICAL DATA IN MINERAL EXPLORATION

EDWARD C. APPLEYARD

Saskatchewan Geological Society

... shown that mass changes of significant magnitude are common, especially when the alteration takes place under near-surface conditions. Examples...

Sedimentary Structures as Indicators of Paleoclimatic Fluctuations: Pyramid Lake, Nevada

Joseph P. Smoot, Larry V. Benson

Utah Geological Association

...). Present-day (1996) Pyramid Lake (surface elevation 1159 m above sea level) is about 105 m deep and covers an area of about 750 km2. The water is marginally...

The Stable-Isotope Composition of Early Ground-Water Cements from Sandstone in Paleoecological Reconstruction

Jay Quade, Lois J. Roe

Journal of Sedimentary Research (SEPM)

...) for SMOW-PDB conversion. STABLE ISOTOPES AND NEAR-SURFACE CARBONATES The stable-isotope composition of carbonate in paleosols can be used...

Calibration of PS Shear Wave Anisotropy in a Mississippi Lime Play, North-Central Oklahoma

Scott Singleton, Shihong Chi, Lisa Sanford, Paul Constance

Unconventional Resources Technology Conference (URTEC)

... and microseismic in reservoir characterization: 2015 URTeC Conference paper #2155095. Crampin, S., 1990, Alignment of near-surface inclusions and appropriate...

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...

Geology & Paleontology of the Southern Border of the San Joaquin Valley, Kern County, California; Guidebook for Pacific Sections SEPM, SEG, & AAPG & SJGS Spring Field Trip

Tom W. Dibblee Jr., W. H. LeRoy, E. W. Wellbaum, Archer H. Warne, D. C. Callaway, Richard S. Rheem, F. Sierveld, Douglas R. Waterman, R. A. Nesbit, R. L. Hester, D. W. Day, E. D. B. Laudeman, R. J. Wells, W. A. Sax, A. Bayoumi, R. J. Allenby, J. W. Durham, R. M. Kleinpell, D. W. Weaver, R. H. Tedford, O. L. Bandy

Pacific Section SEPM

... for rather severe weathering and elevation changes, coupled with higher than usual near surface velocity values. Seismic operations in this area require...

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...

Discriminating Quaternary Depositional Units on the Texas Coastal Plain Using Airborne Lidar and Near-Surface Geophysics

Jeffrey G. Paine, Edward W. Collins, Lucie Costard

GCAGS Transactions

...Discriminating Quaternary Depositional Units on the Texas Coastal Plain Using Airborne Lidar and Near-Surface Geophysics Jeffrey G. Paine, Edward W...

Road Logs/Frontmatter: Recent Sedimentation on Horn Island, Mississippi and Stratigraphy of the Quaternary and Upper Tertiary of the Pascagoula Valley, Mississippi, Tenth Annual GCAGS Meeting

F. X Bland, A. A.Sestak

Mississippi Geological Society

... at an elevation of about 22 feet above sea level. The surface is rather irregular near Ocean Springs, where streams cut into the plain, but becomes quite even...

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...

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...

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...

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...

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...

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...

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...

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

Search and Discovery.com

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...