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The AAPG/Datapages Combined Publications Database

Showing 12,578 Results. Searched 200,616 documents.

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Morphologic Variation in Recent Planktonic Foraminifera: ABSTRACT

Alan D. Hecht, Robert G. Douglas

AAPG Bulletin

.... trilobus and G. sacculifer distinguished by the presence or absence of a saclike final chamber show the 2 phenotypes to be statistically similar. Within...

1971

Late Pleistocene Biostratigraphy and Paleoclimate of Gulf of Mexico Deep-Sea Cores: ABSTRACT

Paul F. Huddlestun, James P. Kennett

AAPG Bulletin

... Gulf of Mexico have been examined in detail and show that most of the 28 species or forms distinguished in these cores show quantitative trends...

1971

Bioclastic Sediment Dispersion Off Bermudan Patch Reefs: ABSTRACT

Clifton F. Jordan, Jr.

AAPG Bulletin

... (excluding Homotrema) increases. Interreef lagoons are distinguished from open lagoons by a lower molluscan content in the sediment. Because...

1971

Submerged Reefs of Eastern Caribbean: ABSTRACT

Ian G. MacIntyre

AAPG Bulletin

... counterparts. These reefs are distinguished from modern reefs in that they are present at depths greater (below about 15 to 20 m) than are commonly associated...

1971

Petroleum Possibilities of Central and South Afghanistan: ABSTRACT

Alfred Schreiber, Dietrich Weippert, Hanspeter Wittekind, Reinhold Wolfart

AAPG Bulletin

... and south Afghanistan the following blocks can be distinguished: East Iran-Central Afghan unit with the Farah block, Helmand block, and Seistan block...

1971

Continuity of Pliocene Turbidite Sandstones, Ventura Area, California, with Applications to Supplemental Recovery: ABSTRACT

Alan F. Thomson

AAPG Bulletin

... permeabilities (several thousand millidarcys). Three classes of turbidite packages were distinguished based on internal arrangement of sandstone...

1971

Texture of River and Beach Sediments Seaward from Active Volcanic Highlands, Southwestern Guatemala: ABSTRACT

W. D. Kuenzi, R. V. McGehee

AAPG Bulletin

... minerals. River sands can be distinguished from beach sands by plotting mean size versus sorting, by coarsest percentile (C) versus median percentile (M...

1972

Geopetal Fabrics: Important Aids for Interpreting Ancient Reef Complexes: ABSTRACT

P. E. Playford, A. E. Cockbain

AAPG Bulletin

... in these rocks. In addition, allochthonous blocks of reef that have been incorporated in forereef and basin deposits can be distinguished from in-place...

1972

Distribution of Forms of Millepora (Hydrozoa) on Recent Coral Reef, Barbados: ABSTRACT

C. W. Stearn, R. Riding

AAPG Bulletin

... be distinguished: (1) encrusting (taking the form of the substrate), (2) boxwork (erect, short-curved coalescing plates with irregular nodose surfaces), (3) bladed...

1972

Provincialism Exhibited by Ordovician Conodont Faunas: ABSTRACT

W. C. Sweet, S. M. Bergstrom

AAPG Bulletin

... well-distinguished provinces were delineated by distribution of conodonts in the northern hemisphere. One, the North Atlantic province, includes all...

1972

Inferred Diagenetic History of Weakly Silicified Deep-Sea Chalk: ABSTRACT

S. W. Wise, K. R. Kelts

AAPG Bulletin

... for the weakly silicified condition of part of the chalk. Clinoptilolite, a second authigenic silicate in the chalk, is readily distinguished in scanning...

1972

Comparative Compositional Studies of Organic Matter in Various Deep-Sea Drilling Project Cores: ABSTRACT

A. L. Burlingame, Bernd R. Simoneit

AAPG Bulletin

... suggest that planktonic versus terrigenous components in the total extractable organic matter may be distinguished. The biologic markers of terrestrial...

1973

Quantitative Petrology and Depositional Environments Within Essentially Isochronous Units of Detrital Sediment, Upper Devonian, New York: ABSTRACT

Frank G. Ethridge

AAPG Bulletin

.... In addition to these general trends, different sedimentary environments with similar mean sizes of quartz grains are distinguished on the basis of differences...

1973

Petrology and Hydrocarbon Potential of Mississippian Ratcliffe Beds in South-Central Saskatchewan, Canada: ABSTRACT

Laszlo M. Fuzesy

AAPG Bulletin

... of diagenesis and porosity-permeability in each of 8 rock types distinguished. Structural considerations are introduced and hydrocarbon potential assessed...

1973

Role of Geologist in Environmental Impact Study: ABSTRACT

A. H. Bouma, B. W. Holliday, C. W. Poag, G. L. Hall, B. S. Appelbaum

AAPG Bulletin

.... Nevertheless, certain consistent patterns can be distinguished on the bay bottom as well as in the shallow subsurface. Heavy-mineral distributions...

1973

Errors in Pre-Holocene Carbon-14 Scale: ABSTRACT

F. W. Stapor, W. F. Tanner

AAPG Bulletin

.... Regardless, there is no standard by which "good" dates can be distinguished from "bad" dates. A suite of samples which has been dated by both C-14 and K...

1973

Geologic Map of Pacific Mobile Belt and Pacific Ocean: ABSTRACT

L. I. Krasny, P. L. Bezrukov

AAPG Bulletin

.... The following series are distinguished: alkaline and alkaline-earth, the series of high-aluminia basalts, calc-alkaline, tholeitic, and others. Various...

1974

Structural Evolution of Mesozoic and Cenozoic Basins in Western North America: ABSTRACT

E. R. Orwig, Jr.

AAPG Bulletin

... American segment of the Circum-Pacific east of the Aleutian Trench is distinguished from adjoining segments by the absence of an oceanic trench and the lack...

1974

Deposits of Bolivian Tin Belt: ABSTRACT

S. Rivas

AAPG Bulletin

... 1,000 km. Three metallogenetic cycles of different age can be distinguished. The oldest is in the northern part of the High Cordillera and is related...

1974

Mid-Cretaceous Calcareous Nannoplankton Paleobiogeography and Paleo-oceanography of Atlantic Ocean: ABSTRACT

J. L. Bowdler, P. H. Roth

AAPG Bulletin

... carbonate dissolution was most pronounced. Neither austral nor boreal nannoplankton assemblages could be distinguished. During late Albian to Cenomanian...

1979

Dolomitization Models from Early Precambrian Sequence in South Africa: ABSTRACT

Kenneth A. Eriksson

AAPG Bulletin

...; this is distinguished from an active northwestern basin margin along which banded iron formations precipitated in lagoons behind clastic-textured carbonate barriers...

1979

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