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The AAPG/Datapages Combined Publications Database
Showing 3,149 Results. Searched 197,312 documents.
Amplitude Versus Offset (AVO) Analysis: Part 7. Geophysical Methods
Allan T. Long, R. C. Anderson
AAPG Special Volumes
... loss effects, (5) spherical divergence, (6) receiver array effects, (7) receiver sensitivity, and (8) receiver vertical directivity. Surface...
1992
Halite as Cementing Mineral in Sandstones: GEOLOGICAL NOTES
W. A. Waldschmidt
AAPG Bulletin
... of free-moving included gas bubbles (B, Pl. I; A, B, Pl. II). Spherical and very narrow elongate voids with rounded walls were also observed in the halite...
1958
Computer-Generated Surfaces and Grids of the Geometry, Rock Type, and Chemistry of a Bedded Mineral Deposit: Chapter 4
Walter J. Bawiec, Wilbur D. Grundy
AAPG Special Volumes
... the demands of the open pit design and evaluation software. Thickness and grade were kriged over the entire 64-km2 area of interest by using a spherical...
1992
A Digitizer for Field Measurements of Microtopography and Sediments Texture: RESEARCH METHOD PAPER
Maxim Shoshany
Journal of Sedimentary Research (SEPM)
... such 3-D movement in a spherical coordinate system is made possible by using three potentiometers. Two MET ONE (model 024A) wind direction sensors (Campbell...
1989
Replacement or Displacement Fabrics
AAPG Special Volumes
... of minute, interlocking pyrite crystals with smooth, almost perfectly spherical exterior surfaces. These can form singly or in groups as authigenic...
1979
II. Information Content and Resolution Potential of Seismic Data.
Norman S. Neidell
AAPG Special Volumes
... motion within this region. Fig. Spherical wave motion encountering a flat reflector illustrating Fresnel zone region which is principally responsible...
1979
Synsedimentary Cements as Paleoproterozoic Platform Building Blocks, Pethei Group, Northwestern Canada: DISCUSSION
Gerald M. Friedman
Journal of Sedimentary Research (SEPM)
... in diameter), microcrystalline, rounded, spherical to subspherical grains...which are present both as individual grains and as micrite cemented grapestone...
1997
I
John G. Dennis
AAPG Special Volumes
... a spherical portion of it, tested by any physical agency, exhibits no difference in quality however it is turned. Or, which amounts to the same, a cubical...
1967
Research Methods Paper A Quick and Inexpensive Sample Preparation Method for AMS Microfabric Analysis in Fine-Grained Sediment
D. Cummings, R.W.C. Arnott
Journal of Sedimentary Research (SEPM)
...") in diameter, although some use cubical or spherical samples, in which case the tube is not necessary. ~ $5 Canadian ($3.50 US). PROCEDURE...
1998
Aerodynamic and Geometric Diameters of Airborne Particles
Weinan Chen , Donald W. Fryrear
Journal of Sedimentary Research (SEPM)
... with an average particle density of 2.49 g cm-3 were used to measure the settling velocity of uniformly shaped spherical End_Page 365...
2001
Volume Factor in Paleocurrent Analysis: GEOLOGIC NOTES
Martin H. Iriondo
AAPG Bulletin
... that the vector mean is the best directional parameter. The use of strictly circular (Wood and Wood, 1966) and spherical (Steinmetz, 1962) distributions also...
1973
Geophysical Illusions of Continental Drift: A DISCUSSION
Robert S. Dietz , John C. Holden
AAPG Bulletin
... the continents are embedded in a mosaic of even larger rigid lithospheric plates which drift in relative rotation on the earth's spherical surface. The plates...
1973
Possible Primary Migration of Oil from Source Rock in Oil Phase: GEOLOGIC NOTES
Parke A. Dickey
AAPG Bulletin
... wrap around a spherical particle, presumably Fig. 1. Sediment density and porosity plotted against depth of burial. Composite curve based...
1975
Graphic Determination of Stratigraphic and Vertical Thicknesses in Deviated Wells: GEOLOGIC NOTES
Russell B. Travis
AAPG Bulletin
... lines represent meridians. These nets are equal-area projections, but any spherical projections could be used. The angle A scale consists...
1978
Abstract: Remote Classification of Seabed Types Derived from Interferometric Sonar Data, by S. Hadden and C. Green; #90923 (1999)
Search and Discovery.com
1999
Direct radiometric dating of bitumen using Sm-Nd isotopes
Mao-Wen Yuan, Lin Li, Sheng-Rong Li, M. Santosh, Cheng-Lu Li, Masroor Alam, Zeng-Qian Hou, and Ming Li
AAPG Bulletin
... formed in the early stage. Bitumen occurs as veins or spherical shape within the quartz veins (Figure 2). The carbonate stage is characterized by pure...
2023
2013
Abstract: Evidence for the Microbial Origin of the Tengiz Unit I Boundstone Slopes, (Pricaspian Basin, The Republic of Kazakhstan); #90153 (2012)
Miriam S. Andres, Tomaso R.R. Bontongnali, Jeroen M. Kenter, Paul (Mitch) Harris, Crisogono Vasconcelos, Judith A. McKenzie, Ruslan Manakhayev and Steve D. Jenkins
Search and Discovery.com
... that of abiotic precipitates. The viscosity of the organic matrix affects the crystal morphology such that they tend to form spherical shapes...
2012
Abstract: Physical Testing of the Effect of Tilting on the Reflection Coefficient in an Anisotropic Material; #90172 (2014)
Miryam Ortiz-Osornio, Douglas R. Schmitt
Search and Discovery.com
... verification of spherical-wave effect on the AVO response and implications for three-term inversion, Geophysics, 73, C7-C12. Behara, L., and Tsvankin, I., 2009...
2014
-- no title --
Search and Discovery.com
N/A
Methanogenic Microbial Degradation of Organic Matter in Indiana Coal Beds
Dariusz Strapoc, Flynn Picardal, Courtney Turich, Irene Schaperdoth, Jennifer Macalady, Julius S. Lipp, Yu-Shih Lin, Tobias F. Ertefai, Florence Schubotz, Kai-Uwe Hinrichs, Maria Mastalerz, and Arndt Schimmelmann
Search and Discovery.com
... were rapid growth in the H2 and CO2 environment, small 0.4 μm spherical cells, and a 2:1 ratio of diethers to tetraethers in the cell membrane. Within...
Unknown
Possible Nanotechnology Applications in Petroleum Reservoirs by Bob Hardage; #40396 (2009).
Search and Discovery.com
2009
Key considerations for Hydraulic Fracturing of Gas Shales; #80100 (2010)
Randy LaFollette
Search and Discovery.com
...-graded, rounded and nearly spherical white sand, but may also be man-made particles. Proppant particles are mixed into additional fracturing fluid...
2010
Geomechanical Modeling of Stresses Adjacent to Salt Bodies: Poro-Elasto-Plasticity and Coupled Overpressures, #40790 (2011)
Maria-Katerina Nikolinakou, Gang Luo, Mike Hudec, Peter B. Flemings
Search and Discovery.com
... Deformation pattern of relaxing salt Salt deforming to achieve isostatic state Change in mean stress relative to initial stress at flank Spherical...
2011
Characterization of Carbonate Heterogeneities at Outcrop Scale: An Integrated Approach Coupling Geophysics, Petrophysics and Geostatistics, #120076 (2012)
C. Matonti, Y. Guglielmi, S. Viseur, P-O. Bruna, C. Dahl
Search and Discovery.com
..., and karstification level. 2) Geophysical and petrophysical measurements at infra-meter scale (Vp on outcrop surface and porosity on plugs). P-wave velocities...
2012