Abstract: Abstract: Diagenesis of Tertiary Volcaniclastics, Guatemala, by David K. Davies, William R. Almon; #90969 (1977).

Search and Discovery.com

Abstract: The need for standard geological indicators of environmental change

Antony R. Berger

Atlantic Geology

..., hydrological, chemical and climatic indicators. Geological parameters and processes affecting surface and near-surface environments appear...

ABSTRACT: A Miner's-Eye View of Lineaments--What's Really Down There, by Douglas C. Peters and Valois R. Shea; #91030 (2010)

Search and Discovery.com

Abstract: Highly Porous and Permeable Waulsortian-like Buildups of the Subsurface Pekisko Formation (West-Central Alberta), by K. C. Kirkby; #91012 (1992).

Search and Discovery.com

Origin of Authigenic Smectite and Zeolite in the Lower Jurassic McCoy Brook Formation, Fundy Basin, Nova Scotia, by L. H. Tanner; #90986 (1994).

Search and Discovery.com

Sedimentary Silica in Newark Basins of Eastern United States: ABSTRACT

Daniel A. Textoris

AAPG Bulletin

...-temperature, near-surface excess silica was introduced into the Newark sedimentary system was by extensive chemical weathering in the source area, when...

ABSTRACT: Triassic-Jurassic Deposition in the Clarence-Moreton Basin, Springfield Lakes, Queensland, Australia; #90108 (2010)

Maria Brunhart-Lupo

Search and Discovery.com

... deposit. Although the outcrop has been affected by near-surface weathering, the unit contains good reservoir properties. The Raceview Formation, which lies...

Application of an Innovative AEM System for Mapping Hazards and Water Resources in Oil and Gas Fields; #20304 (2015)

Scott R. Napier, Bill Brown, Shannon Frey

Search and Discovery.com

... that weathering layer from statics appears to track a thin variable resistivity layer in the AEM resistivity model. This is thought to represent near surface...

Frequency-Domain Waveform Tomography in the Foothills: Velocity Model Estimation with Synthetic Long-Offset Data

Search and Discovery.com

... In the Canadian foothills, conventional seismic data processing is inadequate, given the effects of steep dips, rough topography, and near-surface weathering...

Pedogenic and Groundwater Silcretes at Stuart Creek Opal Field, South Australia

Medard Thiry, Anthony R. Milnes

Journal of Sedimentary Research (SEPM)

...), The opal mining areas of inland Australia have exposures in which a systematic association between near-surface silcrete and one or more silicified...

Implications of the October 17, 1989 Loma Prieta Earthquake for the Emergence of Marine Terraces Along the Santa Cruz Coast, and for Long Term Evolution of the Santa Cruz Mountains

Robert S. Anderson, Dan L. Orange, Susan Y. Schwartz

Pacific Section of AAPG

... at depth and a more diffuse fracture zone near-surface. Geodetic data agree broadly with seismic solutions and show roughly 1.6m strike slip and 1.3m...

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...

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...

Physical Characterization of the Weathering Profile Over a Sheared, Biotite-Muscovite Granite in Peninsular Malaysia

John Kuna Raj

Geological Society of Malaysia (GSM)

...Physical Characterization of the Weathering Profile Over a Sheared, Biotite-Muscovite Granite in Peninsular Malaysia John Kuna Raj Bulletin...

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...

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...

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...

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...

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...

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...

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...

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...

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...