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The AAPG/Datapages Combined Publications Database
Showing 2,930 Results. Searched 196,194 documents.
Sequence Elements in Stratigraphic Analysis of Lower Colorado (Cretaceous) Strata, West-Central Saskatchewan: ABSTRACT
Frank Simpson
AAPG Bulletin
..., sideritic oolites, concentrations of iron sulfides, and accumulations of phosphatic bodies, also are present. The use of sequence elements...
1971
Radiometric Age Determination of Silurian Glauconite: GEOLOGIC NOTES
J. T. Sanford , R. E. Mosher
AAPG Bulletin
.... At various localities there is a concentration of either phosphatic, glauconitic, or ferruginous material which would seem to have required some time for its...
1975
Models for Interpretation of Micromorph Faunas in Washita Group: ABSTRACT
Ernest A. Mancini
AAPG Bulletin
... are found in limonitic, pyritic, or phosphatic black shales. They consist of individuals that are smaller than those in normal faunas. These faunas...
1979
Paleogeography of Eustatic Model for Deposition of Mid-Continent Upper Pennsylvanian Cyclothems: ABSTRACT
Philip H. Heckel
AAPG Bulletin
..., quasi-estuarine circulation, and upwelling, all leading to widespread deposition across the Mid-Continent of phosphatic black shale, which graded...
1980
Organophosphorites in Carboniferous Rocks of Central United States: ABSTRACT
Glen K. Merrill, David T. Long, W. Fred Falls
AAPG Bulletin
...------------------------------ those with siliceous (radiolarians, sponges), or phosphatic (brachiopods, conodonts, bony fish and sharks) skeletons. This indicates an abundance...
1980
Early Paleozoic Conodont Biostratigraphy and Paleogeography of Northwestern Canada: ABSTRACT
R. S. Tipnis, M. P. Cecile
AAPG Bulletin
... to the south. Late Ordovician-Ea ly Silurian carbonate deposition on the platform graded basinward into shales and limestones. The phosphatic microfossil...
1980
Mississippian Continental Margins of Conterminous United States: ABSTRACT
Raymond C. Gutschick, Charles A. Sandberg
AAPG Bulletin
... cascaded over the passive shelf margins to intertongue with thin carbonat slope deposits and very thin (~ 10 m) phosphatic basinal sediments...
1981
Geochemistry of Organic-Rich Shales and Coals from Middle Pennsylvanian Cherokee Group and Lower Part of Marmaton Group, Oklahoma, Kansas, Missouri, and Iowa: ABSTRACT
Joseph R. Hatch, Joel S. Leventhal
AAPG Bulletin
.... Groups II, III, and IV shales are laminated, phosphatic, and nonfossiliferous to slightly fossiliferous. Groups III and IV shales are most common...
1981
Paleogeographic Setting and Depositional Environments of Santa Margarita Formation, Ventura County, California: ABSTRACT
Devin R. Thor
AAPG Bulletin
...-grained sandstone with some large-scale cross bedding; and (2) facies B, laminated mudstone, phosphatic mudstone, and pelletic phosphate. Rocks...
1981
Stratigraphy and Depositional Environments of Miocene Strata of Central Atlantic Coastal Plain: ABSTRACT
Thomas G. Gibson
AAPG Bulletin
...; three pulses of phosphatic clay and sand and intercalated diatomaceous clay characterize the Albemarle Embayment during the early and middle Miocene...
1981
Depositional Patterns of Neogene Sediments Around Carolina Platform on Mid-Atlantic Continental Shelf: ABSTRACT
Stanley R. Riggs, Don W. Lewis, Albert C. Hine
AAPG Bulletin
... by interbedded lithologies consisting of phosphorite sands, phosphatic foraminiferal muds, dolosilts, and calcareous quartz sands. Deposition of the Pungo River...
1981
1996
Depositional Environments of Silurian Whirlpool Sandstone (Medina) in Western New York: ABSTRACT
Beverly Seyler
AAPG Bulletin
.... Fragmented phosphatic marine fossils are found throughout the sandstone. Erosion of Upper Ordovician sediments in western New York was minimal...
1982
Ammonite Zonation in Condensed Zone, Middle Ozan Formation (Taylor Group, Upper Cretaceous) in Northeast Texas: ABSTRACT
Joan Echols
AAPG Bulletin
... phosphatic internal molds), and hiatus concretions. Four of 6 midcontinent ammonite range zones proposed by Cobban and others appear to be represented...
1984
Regional Lithostratigraphy of Permian Phosphoria Formation, Western Overthrust Belt: ABSTRACT
Daniel Tisoncik
AAPG Bulletin
... organic phosphatic mudstone deposited in a shallow marine shelf-margin environment. Distribution of facies types was affected by paleostructural...
1984
Abstract: Hardbottoms of the Inner West-Central Florida Continental Shelf, by S. Obrochta, D. Duncan, and G. Brooks; #90932 (1998).
Search and Discovery.com
1998
Trace Fossils in Middle and Upper Austin Chalk near Dallas, Texas--Paleoecologic and Economic Significance: ABSTRACT
William C. Dawson, Donald F. Reaser
AAPG Bulletin
... channels; dense networks of Thalassinoides occur on lower surfaces. (3) Firmground--phosphatic, glauconitic, foraminiferal biocalcilutite containing...
1985
Depositional Trends in Carbonate-Dominated and Clastic-Dominated Late Pennsylvanian Cycles in North Texas: ABSTRACT
Thomas E. Yancey, Robert Hojnacki
AAPG Bulletin
... silts. The transgressive sequence culminates in a deeper water, dark-colored phosphatic shale. The regressive sequence is thicker, begins with a richly...
1985
Ostracode Distribution in Late Pennsylvanian Finis Shale Cyclothem: ABSTRACT
Kimberly Ann Boller
AAPG Bulletin
..., and is interpreted to represent a "deeper" water, anoxic environment. The overlying dark-gray, phosphatic shales contain a diminutive pyritic molluscan fauna...
1985
Siliciclastic Incursion in Southern Florida and Development of Florida Reefs During Late Cenozoic: ABSTRACT
Gong Soo Chung, Robert N. Ginsburg
AAPG Bulletin
... of calcareous clays, phosphatic grains, and marine faunal fragments. The medium sand to granule-sized sediments are composed of well-rounded quartzose...
1985
Shelf Sedimentation Across Precambrian-Cambrian Boundary: Chapel Island Formation, Southeastern Newfoundland: ABSTRACT
Paul Myrow
AAPG Bulletin
... current distribution), and phosphatic nodules. Sandstones and siltstones deposited in shoreface to outer-shelf settings contain evidence of storm...
1985
Controls on Pennsylvanian Algal-Mound Distribution in Mid-Continent North America: ABSTRACT
Rex C. Price, John C. Mitchell, Robert L. Ravn
AAPG Bulletin
... the feature and (2) change from anoxic, black, fissile, and phosphatic basinal shales to oxygenated, diversely fossiliferous gray shales over the arch...
1985
Facies Comparison of Autochthonous and Allochthonous Permian and Triassic Units, North-Central Brooks Range, Alaska: ABSTRACT
Karen E. Adams, C. G. Mull
AAPG Bulletin
... and the presence of barite to the south and west, while becoming signi icantly sooty and phosphatic to the north and east. Ongoing petrographic...
1985
Glacio-Eustasy, Depositional Environments, Diagenesis, and Reservoir Character of Goen Limestone Cyclothem (Desmoinesian), Concho Platform, Central Texas: ERRATUM
Samuel A. Marquis, Jr., Robert L. Laury
AAPG Bulletin
...." Figure 15 is modified from Dawson (1984). For the reference section: Heckel, P. H., 1977, Origin of phosphatic black shale facies in Pennsylvanian...
1989