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The AAPG/Datapages Combined Publications Database
Showing 3,219 Results. Searched 200,642 documents.
Basics of Resistivity Tools - Application of Resistivity-Tool-Response Modeling for Formation Evaluation - Archie Series No. 2
Hezhu Yin
AAPG Special Volumes
... system establishes essentially constant potential shells around the current electrode, to preserve the spherical potential distribution in the formation...
2011
DEPOSITIONAL ENVIRONMENTS AND DIAGENESIS OF THE SILURIAN INTERLAKE FORMATION WILLISTON BASIN, WESTERN NORTH DAKOTA
CHARLES LoBUE
Williston Basin Symposium
... ellipsoidal, or approach spherical in shape. Ellipsoidal types are as large as 4 mm long and 1 mm wide. All other fenestrae are 1 mm...
1982
Estimating Water Depths of Upper Cretaceous Pilot Knob Volcanic-Related Strata: The McKown and Pflugerville Formations and Pyroclastic Ash at the Lower Falls Section, McKinney Falls State Park, Austin, Texas
Robert G. Loucks, Robert M. Reed, Priyanka Periwal
GCAGS Journal
... (altered ash) of this unit and suggested that they were deposited in deeper water below storm-wave base by gravity-flow processes. Caran et al. (2013...
2024
Geomechanical aspects of CO2 sequestration in a deep saline reservoir in the Ohio River Valley region
Amie Lucier, Mark Zoback, Neeraj Gupta, T. S. Ramakrishnan
Environmental Geosciences (DEG)
...- and S-wave velocity logs and the density log from the suite of geophysical logs available from the AEP 1 well to evaluate the Poisson's ratio...
2006
Global Geoscience Transect, Guangzhou-Palawan
W. Zeng, z. Li, G. Wang, H. Huang
Circum Pacific Council Publications
... changes intensively to wave length and amplitude occurs within a 100 km wide zone of the offshore Macao section. This peculiar anomalous zone can also...
1996
Subaerial Exposure Environment: Chapter 1: PART 1
Mateu Esteban, Colin F. Klappa
AAPG Special Volumes
... sediments or rocks are exposed on the sea floor below the lower limit of noticeable wave action. This category includes submarine hardgrounds...
1983
Spiculitic Chert Reservoir in Glick Field, South-Central Kansas
James P. Rogers, Mark W. Longman, R. Michael Lloyd
Tulsa Geological Society
... developed mainly in subtidal, subtropical to tropical marine waters with low turbulence and abundant nutrients, generally below storm wave base. Brunton...
1996
Spiculitic Chert Reservoir in Glick Field, South-Central Kansas
James P. Rogers, Mark W. Longman, R. Michael Lloyd
Rocky Mountain Association of Geologists
... turbulence and abundant nutrients, generally below storm wave base. Brunton and Dixon (1994) also recognize a general change in depositional setting...
1995
Petrology of the Eocene Sabinetown-carrizo Contact, Bastrop County, Texas
J. Richard Harris
Journal of Sedimentary Research (SEPM)
.... End_Page 267------------------------ and are symmetrical, with an average amplitude of -in and an average wave length of about 3 inches...
1962
Recent Sedimentation and the Search for Petroleum
W. C. Krumbein
AAPG Bulletin
... of Non-Spherical Particles," Trans. Amer. Geophys. Union (1942), pp. 621-33. 23. ROUSE, H., Fluid Mechanics for Hydraulic Engineers. New York (1938...
1945
Cyclic Sedimentation in the Mixed Siliciclastic-Carbonate Abo-Hueco Transitional Zone (Lower Permian), Southwestern New Mexico
Greg H. Mack, W. C. James
Journal of Sedimentary Research (SEPM)
... to spherical calcareous nodules (Fig. 3c). In thin section, the calcareous nodules consist of micrite enclosing floating grains of sand- and silt-sized...
1986
Formerly Aragonitic Limestones Associated with Tillites in the Late Proterozoic of Death Valley, California
Maurice E. Tucker
Journal of Sedimentary Research (SEPM)
... storm-wave base, mid to outer shelf. The thin sandstones are similar to many other storm beds (tempestites) described from the geological record (cf...
1986
Pyrite and Marcasite Coated Grains in the Ordovician Winnipeg Formation, Canada: An Intertwined Record of Surface Conditions, Stratigraphic Condensation, Geochemical "Reworking," and Microbial Activity
Jurgen Schieber, Lee Riciputi
Journal of Sedimentary Research (SEPM)
... marine sandstones with indications of episodic wave reworking, and indicate sufficient organic-matter burial to promote reducing pore waters and iron...
2005
Reflectance spectroscopic mapping of diagenetic heterogeneities and fluid-flow pathways in the Jurassic Navajo Sandstone
Brenda Beitler Bowen, Brigette A. Martini, Marjorie A. Chan, William T. Parry
AAPG Bulletin
... that the common diagenetic minerals in the Navajo Sandstone have diagnostic visible, near-infrared, and short-wave infrared spectral characteristics...
2007
ABSTRACT: An Anecdote Of Neoproterozoic-Early Cambrian Biota: Synthesis From Soluble And Insoluble Organic Matter, Western India
S. Bhattacharya, S. Dutta, S.V. Raju
The Society for Organic Petrology (TSOP)
... acritarch, oval to sub spherical in shape. Very fine processes are observed on the vesicle surface. It is indicative of Earliest Cambrian...
2014
Unusual Coprolites from the Upper Cretaceous Ferron Sandstone, East-Central Utah
John K. Balsley, Wm. Lee Stokes
Earth Science Bulletin (WGA)
... distributed silt-size grains of chert, quartz, and pyrite. The pyrite grains consist of spheres, ½- to 1-micron in diameter, orderly arranged into spherical...
1969
RORAIMA AND IMATACA FORMATIONS IN GALERA DE CINARUCO STATE OF APURE
Emile Rod
Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)
... of diastrophism the more or less spherical 119...
1960
CALCULATION OF THE ATTITUDES OF FOLDED BEDS PRIOR TO SUBSEQUENT TILTING
W. H. Stalhuth
Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)
...., 2014 373 Figure 1: Stalhuth. Sketch of Problem. Spherical triangle on stereographic projection Solution: 1. Note: If the cosine is negative...
1961
Lithostratigraphy and Coccolith Stratigraphy of the Cretaceous-Tertiary Contact Exposed in the Brazos River of East Texas
Stefan Gartner, Ming-Jung Jiang
South Texas Geological Society Special Publications
... phosphate nodules, small pebbles, shark’s teeth, casts of fossils, and spherical calcareous concretions. The Pisgah Member consists of clay...
1984
DEPOSITIONAL HISTORY OF THE UPPER PORTION OF THE GLENBURN ZONE, GLENBURN FIELD, NORTH DAKOTA - EXTENDED ABSTRACT
HOWARD J. FISCHER, REBECCA DURALL, KURT EYLANDS, CHRIS QUINN, DIRK SCHWARTZ, RANDALL STEPHENS, JEFFERY VALVIK
Saskatchewan Geological Society
... while pore filling calcite is prevalent throughout. The major allochems present in these lithologies are spherical to subspherical, occasionally broken...
1984
Recent Marine Sediments of Lancaster Sound District of Franklin
Dale E. Buckley
Atlantic Geology
.... The uniform settling velocity of a spherical particle less than 0.1 mm diameter is theoretically determined by using the viscous resistance formula...
1971
ABSTRACT: Maceral composition and biomarker signatures from Neoproterozoic Early Cambrian oil shales, Upper Indus Basin, Pakistan
Imran Khan, Ningning Zhong, Guangli Wang, Bilal Gul, Zhiyuan Cui
The Society for Organic Petrology (TSOP)
...e organically preserved, unornamented spherical acritarchs (sphaeromorphs) (Fig. c&d). Input of highly aromatic biopolymers typical of Mesoproterozoi...
2018
An Hypothesis of Diastrophism
R. C. Tuttle
Tulsa Geological Society
..., toward a disc at the equator; and (2) that tending to cause the earth to assume a perfect spherical shape. Generally these two forces are in uneasy...
1945
ROCK CREEK SAPPHIRE PLACERS
Kirk Badgley, Jr.
Montana Geological Society
... as spherical to nodular, clear pebbles with pitted surfaces; but some are found as hexagonal prisms terminated by rhombs or pyramids; and others...
1965
The Igneous Geology of Chiricahua National Monument, Arizona
Harold E. Enlows
Tulsa Geological Society
... of spherical balls or pellets of ash averaging about one half inch in diameter and showing an amazing uniformity both as to size and shape. These are tightly...
1951