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The AAPG/Datapages Combined Publications Database
Showing 3,221 Results. Searched 201,044 documents.
Assessing the internal character, reservoir potential, and seal competence of mass-transport deposits using seismic texture: A geophysical and petrophysical approach
Tiago M. Alves, Kuncho Kurtev, Gregory F. Moore, Michael Strasser
AAPG Bulletin
... uniform values of P-wave velocity (Vp) and peak shear strength are recorded in strata with lower contrast. Directionality (D) relates to the existence...
2014
Bifungites of Halli from the Ordovician (Caradocian) Trenton Limestone of the Quebec City Area
R. K. Pickerill, W. B. Forbes
Atlantic Geology
... dimensions of the parameters b (length of spherical dumb-bells), d width of basal chamber), 1 (total length of the trace), s (length of the basal chamber...
1977
Modeling the Semivariogram: New Approach, Methods Comparison, and Simulation Study
A. Gribov, K. Krivoruchko, J. M. Ver Hoef
AAPG Special Volumes
..., spherical or exponential) to the values. Three main approaches exist for estimating the parameters of the semivariogram model: visual, (weighted) least...
2006
Pisolites Formed from the Oilfield Water of the Luling Field, Caldwell County, Texas
Augusta Hasslock Kemp
Journal of Sedimentary Research (SEPM)
... agitated pools on the floor below.< P> The pisolites ranged from 3 mm to 50 mm in diameter, and their shapes ranged from spherical to ovoid...
1959
A Peculiar Pedestalate Terrace, San Nicolas Island, California: NOTES
Harold D. Palmer , David W. Scholl , Jack Green
Journal of Sedimentary Research (SEPM)
... to moderately well sorted medium grained arkosic sandstone [in which] large elongate to nearly spherical calcareous concretions ... occur in some...
1965
A Rapid Method for Determining Weight Percentages of Unsieved Heavy Minerals
Ralph E. Hunter
Journal of Sedimentary Research (SEPM)
...) for spherical grains of a given density () is easily calculated by the formula: grain weight=d3/6. Natural sand grains, however, are usually not spherical...
1967
Glossary
Joann E. Welton
AAPG Special Volumes
...-sea oozes of the temperate and tropical oceans, and were probably not common before the Jurassic. coccosphere: The entire spherical or spheroidal...
1984
Abstracts: Influence of Hydrothermal Fluids on the Horn River Shale Sequence; #90173 (2015)
Ronald J. Spencer, Thomas Weedmark, Victoria Biersteker, and Jon Dola
Search and Discovery.com
... tests are nearly spherical in the silica cemented and dolomite cemented examples in Figure 3 (left and right), but flattened in the uncemented example...
2015
Analysis of the Relations between Porosity and Permeability in Non-Consolidated Granular Media, #40970 (2012)
Melia Da Silva, Carlos Santos
Search and Discovery.com
... studied, and three relations were proposed after analyzing the 2D distribution of the pore throat radii in monodisperse and spherical granular samples...
2012
Diagenetic and Compositional Controls of Wettability in Siliceous Sedimentary Rocks, Monterey Formation, California; #51111 (2015)
Kristina M. Hill and Richard J. Behl
Search and Discovery.com
... (spherical droplets, left) and quartz (low dome droplets, right) in sandstone, showing contrasting wetting characteristics of different mineral surfaces (image...
2015
Deltaic and Associated Deposits of Difunta Group (Late Cretaceous to Paleocene), Parras and La Popa Basins, Northeastern Mexico
E. F. McBride, A. E. Weidie, J. A. Wolleben
Houston Geological Society
... chiefly in "boundary sandstone" units and includes distributary channel and channel-mouth bar deposits and wave deposits reworked from the above. Beds...
1975
Paleogeography of Northern Arizona During the Deposition of the Permian Toroweap Formation
Richard R. Rawson, Christine E. Turner-Peterson
Rocky Mountain Section (SEPM)
... recessive sections. Pelletal Wackestone This rock type is composed of pellets which are elliptical to spherical and range from 0.1 to 0.2 mm...
1980
A Compartmentalized Carbonate Reservoir in the Nesson Zone of the Mississippian Mission Canyon Formation, Williston Basin, North Dakota: A Case Study from Glass Bluff Field
Jo Ann Locklin, Jeffrey N. Damp
Williston Basin Symposium
... fragments). Origin of Pisoids and Laminated Crusts Shinn (1986, p. 29) described laminated crusts and spherical pisoids...
1995
Satellite System for Offshore Surveying
C. D. Lynn
Southeast Asia Petroleum Exploration Society (SEAPEX)
... the capabilities of existing land-based techniques. It is not difficult to see why this should be so. The earth is approximately spherical, and to achieve long...
1980
DEPOSITIONAL ENVIRONMENTS OF THE MANNVILLE GROUP (LOWER CRETACEOUS) IN THE TANGLEFLAGS AREA, SASKATCHEWAN
MALCOLM WILSON
Saskatchewan Geological Society
... to subrounded and moderately spherical. Sorting is moderate to good. As mentioned before, the grains range from silt to fine sand size. A negative...
1984
PETROGRAPHIC STUDY OF SEA BOTTOM SAMPLES FROM OFF THE NORTHEASTERN VENEZUELAN COAST; ESTUDIO PETROGRAFICO DE MUESTRAS DEL FONDO DEL MAR, NORESTE DE VENEZUELA
Manuel Rivero Palacio
Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)
... of the delta (town of Barrancas). The content of grains below 2 microns of these clays is 25%. (Whenever we refer in this paper to grain size we mean spherical...
1968
Application of Centrifugal Compressors for High Pressure Gas Cycling, Arun Field
Cathal Ahern
Indonesian Petroleum Association
... and was manufactured by Mitsubishi Heavy Industries Ltd. It has an automatic dump to a closed drain system – see Figure 1.2. Spherical scrubbers of 8'0", 7'0...
1980
BIOSTRATIGRAPHY OF TRANSITIONAL DEVONIAN-MISSISSIPPIAN SAPPINGTON FORMATION OF SOUTHWEST MONTANA
R. C. GUTSCHICK, LEE J. SUTTNER, MICHAEL J. SWITEK
Montana Geological Society
... to the environments of deposition. Structures resulting from water current and wave energies are most common. Gravity flow of unconsolidated sediments...
1962
The Coker Formation of the Tuscaloosa Group in the Cottondale 7.5-minute quadrangle, Tuscaloosa County, Alabama. Road Log.
Dorothy E. Raymond, Jack C. Pashin
Alabama Geological Society
...-rounded and range in shape from blocky to discoidal and spherical (fig. 2). The varicolored, generally 35 polished, rounded quartzite pebbles (many...
2005
The Geological Heritage Values and Potential Geotourism Development of the Beaches in Northern Sabah, Malaysia
Joanes Muda
Geological Society of Malaysia (GSM)
... level changes, tides, wave actions, rock types and geological structures. Visitors have to be made aware of the geomorphologic processes...
2013
Diagenesis of the Nugget Sandstone: Western Wyoming and North-Central Utah
J. A. Pacht
Wyoming Geological Association
... deposition along a sandy shoreline. Wave formed features include: oscillatory and combined flow ripples and ripple cross-stratification, hummocky bedding...
1977
A Statistical Approach to Assessing Depth Conversion Uncertainty on a Regional Dataset: Cooper-Eromanga Basin, Australia
David Kulikowski, Catherine Hochwald, Dennis Cooke, Khalid Amrouch
Petroleum Exploration Society of Australia (PESA)
.... Theoretical variogram modelling was performed using a spherical method. KED using Stacking and Average Velocities Method Similar to KED using TWT...
2016
Stratigraphic Cyclicity and Reservoir Potential of Upper Pennsylvanian Cline Shale, Midland Basin, Texas
Hanyue Zheng, H. Scott Hamlin
Unconventional Resources Technology Conference (URTEC)
... are lenticular or spherical shape, blackish, 2 cm to 3 cm in hand specimen. Phosphatic layer is a clay-rich layer with ample millimeter-scale phosphate...
2016
Geological Society of Malaysia Newsletter Number 22 (January 1970)
P. H. Stauffer editor
Geological Society of Malaysia (GSM)
..., but its surface in common with the surface'elsewhere is pock-inarked withhemi~ spherical depressions. Perhaps the most interesting surface features...
1970
Effect of Size and Genetic Quartz Type on Sphericity and Form of Beach Sediments, Northern New Jersey
Harvey Blatt
Journal of Sedimentary Research (SEPM)
... environments. Wave swash on the upper part of a beach slope (where the coarser materials are deposited) tends to produce a sliding motion. This type...
1959