Sequence Stratigraphy, Systems Tracts, and Mapping Strategies for the Subsurface Middle and Upper Pennsylvanian of the Eastern Shelf, North-Central Texas*

Arthur W. Cleaves

Fort Worth Geological Society

... disconformities and represent Type-1 sequences. Phosphatic black shale units constitute the interval of maximum glacio-eustatic inundation on the shelf...

A Model of Penecontemporaneous Phosphatization by Diagenetic and Authigenic Mechanisms from the Western Margin of Southern Africa

G. F. Birch

Special Publications of SEPM

... of several phosphatic varieties occurring on the continental margins of southern Africa Authigenic phosphorite occurs as pellets mainly on the middle...

Middle and Upper Miocene Natural Gas Sands of Onshore and Coastal Alabama

Charles C. Smith, Robert M. Mink

GCAGS Transactions

... quartzose sand and black phosphatic grains, and occasional glauconite and pyrite in significant amounts. The upper Oligocene carbonate boundary upon which...

Zonation of Upper Cretaceous Austin Chalk and Burditt Marl, Williamson County, Texas

Keith Young , Edward Marks

AAPG Bulletin

...------------------------------ of carbonate rock. Most of the microfossils are calcareous and fragmentary; they are preponderantly members of the family Globigerinidae. The "Austin group...

Tertiary Tectonics and Sedimentation in the Cuyama Basin, San Luis Obispo, Santa Barbara, and Ventura Counties, California; Frontmatter and Roadlog

W. J. M. Bazeley

Pacific Section SEPM

... on the south limb of a large, overturned anticline. Relizian microfossils that were deposited in middle bathyal depths are common in this unit (Lagoe, 1985...

Oolitic Ironstone of the Cretaceous Western Interior Seaway, East-Central Utah

Marjorie A. Chan

Journal of Sedimentary Research (SEPM)

... of phosphatic material (bone and fish teeth) are common, admixed with fossil hash and wood pieces. Internal structures within the mappable oolitic...

Sedimentology and Orientation of Tentaculite Shells in Turbidite Lime Mudstone to Packstone: Lower Devonian, Barrandian, Bohemia

Jindrich Hladil , Petr Cejchan , Ananda Gabasova , Zdenek Tdeaborsky , Jana Hladikova

Journal of Sedimentary Research (SEPM)

...). A possible sea-level rise is suggested (cf. Fig. 1). Abundant phosphatic microfossils are dominated by small Acrotreta shells; icriodid...

Prairie Bluff Chalk and Owl Creek Formation of Eastern Gulf Region: GEOLOGICAL NOTES

L. W. Stephenson, W. H. Monroe

AAPG Bulletin

..., of great numbers of phospha ic internal molds of mollusks and other marine organisms and phosphatic nodules. This upper chalk extends eastward from...

Evidence of precessional and eccentricity orbital cycles in a Tithonian source rock: The mid-outer carbonate ramp of the Vaca Muerta Formation, northern Neuquen Basin, Argentina

Diego A. Kietzmann, Javier Martin-Chivelet, Ricardo M. Palma, Jose Lopez-Gomez, Marina Lescano, Andrea Concheyro

AAPG Bulletin

... and, to a lesser extent, on bivalves, brachiopods, and microfossils, such as foraminifers, radiolarians, and calcareous nannofossils (Riccardi et al., 2000...

Comparative Organic Geochemistry of Shales and Coals from Cherokee Group and Lower Part of Marmaton Group of Middle Pennsylvanian Age, Oklahoma, Kansas, Missouri, and Iowa: ABSTRACT

Joseph R. Hatch, Joel S. Leventhal

AAPG Bulletin

... to gray-black shales (1 to 8% org. C), and laminated, phosphatic black shales (4 to 28% org. C). Organic matter in these rocks came mostly from peat...

Abstract: Stratigraphy of the Barnett Shale, Newark East Field, Texas., by Prerna Singh, Roger Slatt, Chandra Rai, Carl Sondergeld, and Chris Stamm ; #90065 (2007)

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Abstract: Chemostratigraphy of Hemipelagic Facies of the Monterey Formation and Equivalent Sedimentary Rocks, Los Angeles Basin, California, by Lanners, Rebecca; Behl, Richard J.; and Herzig, Charles; #90162 (2013)

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Sequence Stratigraphic and Geochemical Insights Into Paleoceanography and Source Rock Development in the Shublik Formation and Adjacent Units, Northern Alaska

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Notes on Monterey Rocks Near Santa Maria, California

Kenneth A. Pisciotto

Pacific Section of AAPG

... and preserving the abundant diatomaceous debrts (Ingle, 1973). The transitional phosphatic facies may record the past position of the oxygen minimum...

Middle Miocene Organic Carbon Accumulation Rates in the Monterey Formation in the Santa Barbara and Santa Maria Basins, California; #51696 (2022)

Scott Hornafius

Search and Discovery.com

... sedimentation rates up to 100 m/my are found. The condensed sections in the coastal outcrops west of Santa Barbara are comprised of phosphatic marls...

The Phosphoria, Park City, and Shedhorn Formations in Western Phosphate Field

V. E. McKelvey, James Steele Williams, R. P. Sheldon, E. R. Cressman, T. M. Cheney, R. W. Swanson

Utah Geological Association

..., and carbonate rock and subordinate sandstone in northeastern Utah; thin tongues of phosphatic and cherty rocks, however, persist over all of these areas...

Diagenesis and quartz cement distribution of low-permeability Upper TriassicMiddle Jurassic reservoir sandstones, Longyearbyen CO2 lab well site in Svalbard, Norway

Mai Britt E. Mork

AAPG Bulletin

... at clay-rich microstylolites. Phosphatic beds at the base and top of the formation are strongly influenced by marine eogenesis and reworking processes...

Mississippian Shelf Margin and Carbonate Platform from Montana to Nevada

Raymond C. Gutschick, Charles A. Sandberg, William J. Sando

Rocky Mountain Section (SEPM)

... Survey Professional Paper 985, 25 p. Armstrong, A. K., and Mamet, B. L., 1977, Carboniferous microfacies, microfossils, and corals, Lisburne Group...

The Cretaceous-Paleogene Boundary on the Brazos River, Texas: New Stratigraphic Sections and Revised Interpretations

Malcolm B. Hart, Thomas E. Yancey, Andrew D. Leighton, Brent Miller, Chengjie Liu, Christopher W. Smart, Richard J. Twitchett

GCAGS Journal

... shells (mostly small pycnodonteinid bivalves) as well as molds of aragonitic shells and phosphatic steinkerns set in a matrix of abundant foraminifera...

Comparison of Marine-Bar with Valley-Fill Stratigraphic Traps, Western Nebraska

F. A. Exum , J. C. Harms

AAPG Bulletin

... and illite. Granule- or pebble-size material is nearly absent in the clean sandstone of the central-bar facies. Phosphatic fragments are found...

Petrography and Origin of Bedded Barite and Phosphate in the Devonian Slaven Chert of Central Nevada

Karen K. Graber , Henry S. Chafetz

Journal of Sedimentary Research (SEPM)

...., 1988, p. 259-268. COLES, K. S., AND SNYDER, W. S., 1985, Significance of Lower and Middle Paleozoic phosphatic chert in the Toquima Range, Central...

Abstract: The Fleming chert-breccia, Labrador Trough, Labrador

T. Birkett

Atlantic Geology

.... The rocks of the Fleming Formation overlie a cherty phosphatic unit, traditionally considered part of the underlying dolomitic Denault Formation...

Recently Discovered Middle Miocene Production in Inglewood Oil Field: ABSTRACT

A. F. Woodward

AAPG Bulletin

... (Modelo) sediments consisted of shale, silty sand, and phosphatic nodular shale. A volcanic-sedimentary series encountered between 8,358-8,420...

Stratigraphic and Economic Significance of Mississippian Sequence at North Georgetown Canyon, Idaho

William J. Sando , Charles A. Sandberg , Raymond C. Gutschick

AAPG Bulletin

... shallowing upward to peritidal lithofacies that are included in a new formation, the Aspen Range Formation. An organic-rich phosphatic member at the base...

ABSTRACT: Depositional, Diagenetic, and Original (Inorganic) Compositional Influences on Thermogenic Shale Gas Production, Western North America

S. Robert Bereskin, John A. Kieschnick

Rocky Mountain Association of Geologists

...) carbonates, (2) clastic influxes, (3) dominantly argillaceous assemblages, (4) phosphatic influences, (5) authigenic silica-rich assemblages, and (6...