Mapping natural oil seeps in the Middle Magdalena Basin (Colombia) using WorldView-3 satellite data

Saeid Asadzadeh, Ivan Rodrigo Plata Arango, and Carlos Roberto de Souza Filho

AAPG Bulletin

.... It is commonly the diffuse, near-surface flow of gaseous hydrocarbons that form the widest alteration zones around petroleum seeps (e.g., Asadzadeh...

Nature and Origin of Paradox Basin Salt Structures

Wm. Lee Stokes

Utah Geological Association

... it is suggested that in the earlier stages the top of the salt must be near or at the surface. If sediments accumulate beyond a critical stage the movement...

Banff Thermal Springs, a Fascinating Problem

T. Binnert Haites

CSPG Bulletin

... near the surface as at depth. Thus they ought to induce surficial flowage rather than deep circulation. The same reasoning is applicable to steeply...

Recognition of Fossil Karst Features in the Ancient Record: A Discussion of Several Common Fossil Karst Forms

R. Mark Maslyn

Rocky Mountain Association of Geologists

... water inflow or accumulation, it seems likely that in this area the silicification is a near-surface phenomena possibly related to the release...

Tertiary Geology and Oil and Gas Prospects in Dakota Basin of North Dakota

Ray V. Hennen

AAPG Bulletin

... or a bottom-hole elevation 2,075 feet (L), and the two lignites near the bottom have been correlated as Nos. 18 and 16. Point 6, Dickinson...

Tectonic Implications of Oriented Lakes and Lineaments in Northeastern Bolivia

George Plafker

Utah Geological Association

... in the Beni basin where water table is at or near the surface (Figs. 1 and 5). They extend from the margin of the Brazilian Shield outcrop, westward...

Simulation of Light Hydrocarbon Migration in a Stacked Petroleum Reservoir at Teapot Dome, Wyoming, with Pressurization During Carbon Dioxide Sequestration

Ronald W. Klusman

AAPG Special Volumes

...., Hydrocarbon migration and its near-surface expression: AAPG Memoir 66, p. 203221.Klusman, R. W., 1993, Soil gas and related methods for natural...

Hydrogeologic Framework and Ground-Water Resources of East-Central Montana

Larry N. Smith, John I. LaFave

Williston Basin Symposium

... (6 m), and typically < 5 ft (1.5 m), of silty till is preserved near the surface of the sand and gravel sections. Thin sections...

The Geologic History of the Panuco River Valley and Its Relation to the Origin and Accumulation of Oil in Mexico

Earl A. Trager

AAPG Bulletin

.... Previous to the work done by the writer an excellent surface study of the area was completed under the supervision of Mr. C. E. Hyde, now vice-president...

Stratigraphy and Formation of Holocene Dolomitic Carbonate Deposits of the Coorong Area, South Australia

C. C. Von Der Borch

Journal of Sedimentary Research (SEPM)

..., Chemical characterization and weathering changes in Holocene volcanic ash soils near Mt. Gambler, South Australia: Trans. Roy. Soc. South Australia, v...

Meteoric Burial Diagenesis of Pennsylvanian Arkosic Sandstones, Southwestern Anadarko Basin, Texas

Shirley P. Dutton , Lynton S. Land

AAPG Bulletin

... and that it formed before aragonite dissolution, the chlorite probably precipitated at a near-surface temperature of about 25°-30°C (77°-86°F). The average ^dgr18O...

Geology of the Eastern End of the Uinta Mountains, Utah-Colorado

G. E. Untermann, B. R. Untermann

Utah Geological Association

... represent part of an original geosynclinal trough into which were deposited sediments from pre-Cambrian to late Cretaceous time. Folding and elevation...

Magnitude of Tectonic Uplift Events Along Passive Margins Estimated from Analysis of Base-Level Governed Erosion Surfaces, by Johan M. Bonow and Peter Japsen, #40414 (2009).

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Influence of Geological Factors on Longitudinal Seismic Velocities

B. B. Weatherby , L. Y. Faust

AAPG Bulletin

... alteration in velocity is to be expected due to the weathering of the limestone at the surface. Measurements of limestone velocities in wells...

A Chromium-Nickel Laterite in Bukit Punggor, Malacca, Peninsular Malaysia - A Discussion

C. S. Hutchison

Geological Society of Malaysia (GSM)

..., and even make it unlikely that the parent rock is ultrabasic, as is proposed. The reported iron analyses leave us in further doubt. Near surface goethite...

Foreword: Part III. Migration and Accumulation of Petroleum

AAPG Special Volumes

... in limestones near or at the surface of the earth, above the water table; that the openings thus formed were subsequently occupied by organic matter...

Backbeach Deflation Aprons: Morphology and Sedimentology

J. A. G. Cooper, A. M. Smith, A. N. Green

Journal of Sedimentary Research (SEPM)

...-parallel winds and high sediment abundance. The variable degree of polishing and weathering, planar surface, low elevation, and back-beach location along...

Accumulation of Oil & Gas in Bois D'Arc Member of Hunton Group Central Oklahoma

Eugene Culp, Ed Barrett

Tulsa Geological Society

... the lower Mississippian Woodford shale, is in contact with a truncated surface varying from Cambrian in northeastern Oklahoma to upper Hunton...

Model Sensitivity of the Late Ordovician Climate to Atmospheric pCO2

Mark T. Gibbs, Eric J. Barron, Thomas J. Crowley, Lee R. Kump

Pacific Section SEPM

... distribution for 440 Ma based on Scotese and Golonka (1992); and a uniform land elevation of 500 m. We perform several experiments with atmospheric pC02 set...

Subaerial Exposure Environment: Chapter 1: PART 1

Mateu Esteban, Colin F. Klappa

AAPG Special Volumes

...: Reworking, brecciation, weathering (new Stage 1). The lithified caliche profile, if it remains at the land surface, is subjected to further processes...

Iron Sulfide Concretions from Tulare Formation at O'Neill Forebay Reservoir, Western Merced County, California

Nikola P. Prokopovich

AAPG Bulletin

... of sulfate salts, particularly near their surface. Native sulfur in the form of diffusion rings was noted inside two or three concretions. Small...

Characterisation of the Weathering Profile Developed over an Amphibole Schist Bedrock in Peninsular Malaysia

J. K. Raj

Geological Society of Malaysia (GSM)

... that there is a particularly thick pedological B horizon in the exposed weathering profile; a feature which is considered to result from the accumulation of surface wash...

The Origin of Natural Gas in the Tertiary Coal Seams on the Eastern Margin of the Powder River Basin

Anthony W. Gorody

Wyoming Geological Association

... that the oxidative weathering of coal near the surface may locally contribute acetate and other simple methyl compounds to the ground water (Isaacs and Liotta, 1987...

The Holocene Transgression in Peninsular Thailand

Paiboon Pramojanee, Paul Hastings, Montri Liengsakul, Virote Engakul

Geological Society of Malaysia (GSM)

... weathering. It is widely held that this type sediment represents the weathered Pleistocene land surface which was uncovered during the last full...

Some Thoughts on the Development of the Alluvial Tinfields of the Malay-Thai Peninsula

D. Taylor

Geological Society of Malaysia (GSM)

... developed on or near the mineralised granites, as at Gam bang, where mineralisation suitable for k a k s a formation occurred. Bulletin...