Click to minimize content

Welcome to the new Datapages Archives

Datapages has redesigned the Archives with new features. You can search from the home page or browse content from over 40 publishers and societies. Non-subscribers may now view abstracts on all items before purchasing full text. Please continue to send us your feedback at emailaddress.

AAPG Members: Your membership includes full access to the online archive of the AAPG Bulletin. Please login at Members Only. Access to full text from other collections requires a subscription or pay-per-view document purchase.

Click to maximize content

Welcome to the new Datapages Archives

Search Results   > New Search > Revise Search

The AAPG/Datapages Combined Publications Database

Showing 25,430 Results. Searched 200,636 documents.

< Previous   47   48   49   50   51   Next >

Ascending

Porphyrins in Subbituminous and Bituminous Coals: ABSTRACT

Susan E. Palmer

AAPG Bulletin

... spectrometric data of coal porphyrins with that of petroporphyrins result in some striking differences. Coal porphyrins lack carbon numbers above C32, do...

1979

Dual Origin of Natural Gases in Subalpine Tertiary Basins: ABSTRACT

Martin Schoell

AAPG Bulletin

... and have been enriched in carbon 12 isotopes; and (2) the dry gases are of biogenic origin. Carbon and hydrogen isotope analyses on gases...

1979

Mechanisms for Uranium Deposition in Grants Mineral Belt: ABSTRACT

D. G. Brookins

AAPG Bulletin

... ground with organic carbon (plus some hydrogen sulfide) acting as reductant; this is supported by evidence for organic carbon in calcite...

1979

Sedimentology and Source-Bed Geochemistry of Spraberry Sandstone, Midland Basin, West Texas: ABSTRACT

Richard F. Houde, David E. Eby

AAPG Bulletin

... and Pegasus fields (Midland County) were analyzed by means of various geochemical techniques to determine their source-bed potential. Total organic carbon...

1979

Geochemistry of Small Lacustrine Delta, Great Salt Plains, Alfalfa County, Oklahoma: ABSTRACT

Kenneth A. Lipstreuer, Colin Barker

AAPG Bulletin

..._Page 2118------------------------------ from the lake itself. The total amount of organic carbon in the surface sediments increases with distance...

1979

Bioturbation as Factor in Hydrocarbon Generation--Example from Mowry Shale: ABSTRACT

Charles W. Byers

AAPG Bulletin

... lateral changes in organic carbon content. Such variations have been ascribed to a dilution effect--siliciclastic swamping of the planktonic component...

1980

Organophosphorites in Carboniferous Rocks of Central United States: ABSTRACT

Glen K. Merrill, David T. Long, W. Fred Falls

AAPG Bulletin

... in the Illinois basin and Mid-Continent are actually fissile coals. Thin section examination demonstrates that these rocks are as much as 90% carbon by volume...

1980

Limitations of Rock-Eval Pyrolysis for Typing Organic Matter: ABSTRACT

Barry J. Katz

AAPG Bulletin

... relative to the organic carbon content, the leaner the rocks the greater the error will be resulting from interference of inorganic CO2. The hydrocarbon...

1981

New Insights into Devonian Oil Shale Resource of Eastern United States: ABSTRACT

R. David Matthews, John C. Janka, John M. Dennison

AAPG Bulletin

... to these shales increases the percentage End_Page 953------------------------------ of organic carbon extracted thereby doubling the yield of oil...

1981

Relation of Calcite Cementation and Uranium Mineralization in South Texas: ABSTRACT

Steven M. Murray, Harald S. Poelchau, Stephen D. Meyers

AAPG Bulletin

.... Carbon isotope values of the cements are interpreted to indicate that the carbon is the result of contribution from organic matter. Calcite in the highly...

1981

Geochemistry and Isotopic Composition of Hydrocarbon-Induced Diagenetic Aureole (HIDA), Southwestern Oklahoma: ABSTRACT

Zuhair Al-Shaieb, R. A. Lilburn

AAPG Bulletin

... of seeping hydrocarbons to carbon dioxide is the major source of carbon in diagenetic carbonates, which occur as cement and as replacement of gypsum...

1982

Geochemical and Mineralogical Analyses, Pennsylvanian Kendrick Fauna, Eastern Kentucky: ABSTRACT

Uwe Brand

AAPG Bulletin

..., and pelecypods precipitated calcium carbonate in oxygen (average -4.5 ppt, ^dgr18O, PDB) and carbon (average +1.7 ppt, ^dgr13C, PDB) isotopic...

1982

Thermal Chromatography in Source-Rock Analysis: ABSTRACT

J. B. Davis, J. P. Stanley

AAPG Bulletin

... End_Page 561------------------------------ sediments relatively low in organic matter yield low molecular weight hydrocarbons due to more carbon-carbon...

1982

Diagenetic Relationships Between Inorganic Matrix and Kerogen in Wilcox Group, Southwest Texas: ABSTRACT

Peter D. Jenden, I. R. Kaplan

AAPG Bulletin

... with stable carbon isotope values ranging between -26 and -29 ppt (PDB). Smectite dehydration in the area begins at less than 1 km depth (60°C). At the depths...

1982

Relationships Among Carbon Dioxide, Pore-Fluid Chemistry, and Secondary Porosity, Texas Gulf Coast: ABSTRACT

Stephen G. Franks, Richard W. Forester

AAPG Bulletin

...Relationships Among Carbon Dioxide, Pore-Fluid Chemistry, and Secondary Porosity, Texas Gulf Coast: ABSTRACT Stephen G. Franks, Richard W. Forester...

1984

Hydrocarbon Source Potential in Brazilian Margin Basins: ABSTRACT

Marcio Rocha Mello, Guilherme de O. Estrella, Paulo Cesar Gaglianone

AAPG Bulletin

... potential of the areas. The geochemical evaluation of the rock and oil samples was performed by organic carbon determinations, Rock-Eval pyrolysis...

1984

Deposition in Anoxic Taconic Foreland Basin, Late Middle Ordovician, New York: ABSTRACT

Bernward J. Hay, John L. Cisne

AAPG Bulletin

... terrane. The facies gradually shifted west laterally; the length of time span investigated is about 6 m.y. From the distribution of organic carbon...

1984

Geochemical Conditions in Sediment Containing Gas Hydrates of Active and Passive Continental Margins: ABSTRACT

Keith A. Kvenvolden

AAPG Bulletin

...), and the organic carbon contents of these sediments generally exceed 0.5%. Anomalous seismic reflections that crosscut reflections from sedimentary...

1985

Lithological and Geochemical Facies of Shublik Formation (Triassic), North Slope, Alaska: ABSTRACT

Judith Totman Parrish

AAPG Bulletin

.... Bioturbation of the sediments is variable but generally decreases offshore. Organic carbon increases offshore, and phosphate increases from...

1985

Source-Potential Rating Index--Evaluation of Bakken Formation: ABSTRACT

Fredric L. Pirkle, Harry Dembicki, Jr.

AAPG Bulletin

... carbon, and vitrinite reflectance data for the Bakken were gathered from 101 wells within the Williston basin and evaluated in terms of source...

1985

< Previous   47   48   49   50   51   Next >