Abstract: Subsurface Migration of Petroleum Hydrocarbons: A Case Study of Immiscible Migration and Chromatographic Separation, by H. E. Dawson; #91009 (1991)

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Abstract: Coal Resource Assessment of Alberta, by D. Nikols, W. Langenberg, R. Eccles, and S. Treasure; #91012 (1992).

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Sedimentologic and Reservoir Characteristics of Abandoned Delta Distributary: ABSTRACT

Stephanie V. Hrabar, Paul Edwin Potter

AAPG Bulletin

... into the shallow channel prior to deposition of the flu ially derived sand. Decementation by groundwater percolating downward into the underlying carbonate...

Abstract: Aeromagnetic Confirmation of Geologic Structure in the Rough Creek Graben Region, Western Kentucky, by J. R. Howe, T. L. Thompson, and S. P. Gay; #91013 (1992).

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Size-Depth Variation in Foraminifer Cyclammina Cancellata Brady from Peru-Chile Trench Area: ABSTRACT

Fritz Theyer

AAPG Bulletin

... between 4 and 5 mm follow from 2,000 to 3,500 m, and a decreasing trend characterizes deeper samples. The mean thickness increases steadily downward...

Principles of Deltaic Prospecting: ABSTRACT

Daniel A. Busch

AAPG Bulletin

... downward at the expense of the underlying prodelta clays. All the lithologic components of a deltaic complex are related and are collectively referred...

Geologic Occurrence of Oil and Gas in Miocene of Gulf Coast of United States: ABSTRACT

E. H. Rainwater

AAPG Bulletin

... to that part of the northern Gulf basin. Downward movement along faults that bound the deeply buried salt-filled grabens also took place as the major...

Genetic Units and Delta Prospecting: ABSTRACT

Daniel A. Busch

AAPG Bulletin

... downward at the expense of the underlying prodelta clays. All the lithologic components of a deltaic complex are related to each other and are collectively...

Physical Chemistry of Carbonates in Oceans: ABSTRACT

Robert A. Berner

AAPG Bulletin

... of CaCO3. The so-called "compensation depth" below which CaCO3 disappears from deep sea sediments does n t represent simply a downward change from...

Knifley Sandstone: Early Mississippian Infralittoral Sandstone Body: ABSTRACT

S. V. Hrabar, R. C. Kepferle, C. T. Klekamp, W. A. Pryor, P. E. Potter

AAPG Bulletin

... Sandstone is a coarsening-upward sequence of fine- to medium-grained, glauconitic, dolomitic, subgraywackes, which grade downward into the underlying Ft...

Reservoir Analysis, Pennsylvanian Tensleep Formation, Little Buffalo Basin, Wyoming: ABSTRACT

J. A. McCaleb, W. R. Emmett, K. W. Beaver

AAPG Bulletin

... in Late Pennsylvanian-Early Permian, an (2) redeposition of these minerals in open pore spaces and fractures by downward-percolating groundwater...

Abstract: The Shallow Aquifer System at the Naval Surface Warfare Center, Dahlgren Laboratory, Dahlgren, Virginia, by A. R. Brockman and G. E. Harlow, Jr.; #90995 (1993).

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Van Horn Sandstone, West Texas--Early Paleozoic Alluvial-Fan System: ABSTRACT

C. G. Groat, J. H. McGowen

AAPG Bulletin

...-downward deposits). Mid-fan sands occur as channel fills, across the tops of gravel bars, and in lows flanking them. Foreset and trough crossbeds...

Sandstone and Chert Columns in Permian Rocks of Southwest Montana: Biogenic or Inorganic?: ABSTRACT

R. C. Gutschick, L. J. Suttner

AAPG Bulletin

... influx by moving upward rather than burrowing downward. If so, the structures may have important implications about rates of sedimentation...

Deltaic Sedimentation and Growth Faulting, Upper Cretaceous, Colorado: ABSTRACT

R. J. Weimer

AAPG Bulletin

... of the fault. The northwest-trending fault plane curved downward toward the south from a dip of about 60° to a low-angle bedding plane fault. A second...

Recent and Ancient Turbidites and Contourites: ABSTRACT

A. H. Bouma

AAPG Bulletin

... in which gradual filling followed by sudden emptying has occurred. The material in the canyon head moves downward slowly, comparable to glaciers. Besides...

Structure of Miocene Rocks in Sierra Madre, Northeastern Santa Barbara County, California: ABSTRACT

A. Eugene Fritsche

AAPG Bulletin

... consisting of parallel, longitudinal, reverse-slip faults which join both westward and downward and which have a subsurface distributive component that is now...

Major Marine Source Rocks and Stratigraphic Cycles, by B. Duval, C. Cramez, and P. Vail; #90986 (1994).

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Abyssal Sediment Burrowers--Trace Fossils in Caribbean Chalks and Marls, Deep-Sea Drilling Project Cores: ABSTRACT

John E. Warme, W. James Kennedy, Nahum Schneidermann

AAPG Bulletin

... and detail downward in the cores. Furthermore, little knowledge exists about modern abyssal burrowers and their burrows, and few cores have been taken...

Structural History and Oil Potential of Offshore Area from Cape Hatteras to Bahamas: ABSTRACT

W. S. Olson

AAPG Bulletin

... of the continents continued, the distance from the Mid-Atlantic Ridge to the eastern margin of North America increased. This permitted a downward flexing...

The 3D Seismic Revolution: Impact on Development, by E. O. Nestvold; #90986 (1994).

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Development in In Situ Processing for Shale Oil Recovery: ABSTRACT

Donald E. Garrett, Richard D. Ridley, Randall T. Chew, III

AAPG Bulletin

... at the top of the retort initiates retorting which then proceeds downward ahead of the advancing flame front. The oil produced is pumped from a sump...

Abstract: Holocene Stability of the Gulf of Mexico Coast, by W. F. Tanner; #90983 (1994).

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Abstract: The 3-D Seismic Revolution: Impact on Exploration and Development, by W. Nestvold; #90982 (1994).

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Hummocky Cross-Stratification--Indicator of Storm-Dominated Shallow-Marine Environments: ABSTRACT

A. P. Hamblin, W. L. Duke, R. G. Walker

AAPG Bulletin

... is not a form of trough cross-bedding--dips are too low, stratification is as commonly arched upward as downward, and the hummocks and swales are elliptical...