Pitfalls in Seismic Interpretation

Paul M. Tucker, Howard J. Yorston

Pacific Section of AAPG

...”. Example 1-A. Basin “Thin” A second means of identifying these interval changes as velocity effects is to assign a reasonable velocity for the first...

Geotechnical Engineering Link Between Offshore Processes and Hazards: Section 3

Dwight A. Sangrey

AAPG Special Volumes

..., Effects of rate of loading on strength of clays and shales at constant water content: Geotechnique, v. 2, p. 251. Castro, G.C., 1975, Liquification...

Tonsteins and Clay-Rich Layers in Coal-Bearing Intervals of the Eocene Manning Formation, East-Central Texas

Leslie F. Ruppert, Peter D. Warwick, Sharon S. Crowley, James Pontolillo

GCAGS Transactions

... in the upper clay layer of the 3500 bed, and plagioclase, with accessory Ti-bearing biotite, predominates in the sample from the floor...

Fluvial Response to Late Quaternary Climatic Fluctuations, Central Kobuk Valley, Northwestern Alaska

Gail M. Ashley , Thomas D. Hamilton

Journal of Sedimentary Research (SEPM)

... International Permafrost Conference, p. 876-881. VAN VLIET-LANOE, B., 1985, Frost effects in soils, in Boardman, J., ed., Soils and Quaternary Landscape...

Integrated petrophysical characterization of the Nanushuk Formation on the North Slope, Alaska

Search and Discovery.com

ABSTRACT: Timing of Petroleum System Events Controls Accumulations on the North Slope, Alaska; #90108 (2010)

Kenneth Peters, Oliver Schenk, and Kenneth Bird

Search and Discovery.com

... in a structuralstratigraphic trap, although subsurface imaging was uncertain due to difficulty in assessing seismic velocities through permafrost. Drill cuttings showed...

The Impact of Shear-Wave Splitting on the Imaging of P-S Data

Search and Discovery.com

... splitting analysis of the shallow layer centred on 600ms. The effects of the splitting on this shallow layer were removed from the data, and a subsequent...

Proglacial Fluvial and Lacustrine Environments

Michael Church, Robert Gilbert

Special Publications of SEPM

... fluviatile effects. H e n c e , t h e r a n g e of r e l e v a n t l i t e r a t u r e is b y n o m e a n s restricted t o t h a t describing proglacial...

Developments in Alaska in 1966

Edwin H. East

AAPG Bulletin

... investigations in Kotzebue Sound and along the north shore of Seward Peninsula, 2; and engineering studies related to earthquake effects in urban areas along...

Land, Marine and Transition Zone Seismic Operations in PPL 123, Papua New Guinea

Alan G. Fenwick, Robert J. Paul

Papua New Guinea (PNG) Petroleum Convention Proceedings

..., a Low Velocity Layer (LVL) crew capable of recording both refraction and uphole data, was mobilized. The in­ strument used for this survey was a 24...

Characterizing a weathering profile over the Kuantan Basalt

John Kuna Raj

Geological Society of Malaysia (GSM)

... effects of pedological processes. Thin-sections of weathered rims (1-2 cm thick) show alteration of basalt to start with formation of micro-cracks (Stage 1...

Gas Hydrates in Ocean Bottom Sediments

M. K. MacLeod

AAPG Bulletin

.... Theoretical depths to the base of a gas hydrate layer in ocean bottom sediments are determined by assuming: (1) a constant hydrostatic pressure...

Abstract: Elastic Finite-difference Modeling for Testing Acquisition and Processing Methods; #90187 (2014)

Peter Manning, Joe Wong, and David Henley

Search and Discovery.com

...). The models include an overburden and a weathered layer with very low P and S velocities and varying thicknesses. The common source gathers of the vertical...

Kinetics of the Opal-CT to Quartz Phase Transition Control Diagenetic Traps in Siliceous Shale Source Rock from the San Joaquin Basin and Hokkaido, #40771 (2011)

Danica Dralus, Kenneth E. Peters, Mike D. Lewan, Oliver Schenk, Michael Herron, and Kunihiro Tsuchida,

Search and Discovery.com

... of the reaction. We determined first-order kinetic parameters for the opal-CT to quartz transition based on hydrous pyrolysis of weathered Monterey...

Basement Reservoir Play Concept and Its Potential in Western Indonesia

M. Nurisman Syarif, M. Reza Pahlevi, Ayyub Shabir Annas

Indonesian Petroleum Association

..., fractures with scale range from microfracture to seismic scale fault). Another type is dissolution porosity, formed by the effects of weathering...

Introduction to Offshore Geologic Hazards: Section 1: PART 1

Arnold H. Bouma

AAPG Special Volumes

... susceptibility to absorption of rain water and/or to dissolution. Such effects under water are probably less severe, unless a weak layer becomes a slide plane...

Mapping Thermal Maturity in the Chainman Shale, Near Eureka, Nevada, with Landsat Thematic Mapper Images (1)

LAWRENCE C. ROWAN , MARK J. PAWLEWICZ , and OLIVER D. JONES

AAPG Bulletin

...-infrared (VNIR) wavelength region, VNIR reflectance spectra of fresh and weathered whole-rock sample surfaces were measured in the laboratory. The spectra...

Abstract: Shear Strength along Foliation Planes in Meta-Rhyolitic Tuff from the Dinding Schist, Kuala Lumpur (P2A-3)

J. I. Nkpadobi, J. K. Raj

Geological Society of Malaysia (GSM)

... Seminar Geosains Kebangsaan 2007 (NGC 07) Universiti Malaysia Sabah, Kata Kinabalu, Sabah 7 - 9 June 2007 shows slightly weathered meta-rhyolitic...

Engineering Geologic Hazards Field Trip

S.R. Wharton

Geological Society of Trinidad & Tobago

... (Fig. 12). The thickness of the weathered rock layer at the scarp is distinctively more exposed than any of the other previous failed slope sections...

Timing of Petroleum System Events Controls Accumulations on the North Slope, Alaska, #30145 (2011)

Kenneth Peters, Oliver Schenk, Kenneth Bird,

Search and Discovery.com

... to difficulty in assessing seismic velocities through permafrost. Drill cuttings showed extensive oil stain in the target formation. The 3D model shows...

Abstract: Attenuation, Velocity Dispersion and the Fate of the Vibroseis Signal; #90211 (2015)

Bernd Milkereit, Flora Sun, Wei Qian, and Thomas Bohlen

Search and Discovery.com

... and porosity related attenuation processes. Background For seismic imaging, we cannot separate the effects of attenuation and velocity dispersion. Any...

Guidelines to Prevention of Slope Failure Related Disasters in Granitic Bedrock Areas of Malaysia

J. K. Raj

Geological Society of Malaysia (GSM)

... layer of weathered materials over bedrock is found (Raj, 2000a). These failures occurred during, or following, periods of exceptionally, intense...

ABSTRACT: The Effects of Mechanical Stratigraphy on the Development of Fault-Propagation Folds in Physical Models, by Christopher T. McLain and John H. Spang; #90906(2001)

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Geologic Interpretation of Argillaceous Sediments: Part II. Clay Petrology of Upper Mississippian-Lower Pennsylvanian Sediments of Central United States

Charles E. Weaver

AAPG Bulletin

... of montmorillonite which they contain. As stated before, the Springer contains a 12-A montmorillonite and contains one layer of water. When weathered...

Recognizing Non-Steady-State Weathering Conditions In Ancient Submarine Fan Systems: Correcting For K-Metasomatism Reveals A Late Cretaceous Non-Steady-State Weathering Regime, Point Loma Formation, Southwestern California, U.S.A.

Marcelo Azevedo, Jason R. Parizek, Heather N. Webb, Kristen N. Dennis, Matthew T. Dorsey, Nicole C. Fenton, Craig M. Hall, Gary H. Girty

Journal of Sedimentary Research (SEPM)

... and shallow burial were subjected to a K-metasomatic event. After correcting for introduction of K+, and consideration of the effects of hydraulic...