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The AAPG/Datapages Combined Publications Database
Showing 1,445 Results. Searched 200,630 documents.
Application of Seismography to Geological Problems
Eugene McDermott
AAPG Bulletin
... to the energy in various parts of this wave front is to be considered. Instead of considering the wave front, it is simpler to use rays which are normal...
1931
Application of finite difference eikonal solver for traveltime computation in forward modeling and migration
Amir Mustaqim Majdi, Seyed Yaser Moussavi Alashloo, Nik Nur Anis Amalina Nik Mohd Hassan, Abdul Rahim Md Arshad, Abdul Halim Abdul Latiff
Geological Society of Malaysia (GSM)
... the eikonal equation in ray tracing. This condition treats rays as equivalent to the characteristic curves of the Hamiltonian. In simpler words, if we...
2021
Lagenicula Validespinosa, Imperial Formation, District of Mackenzie
K. Hyslop, L. V. Hills
CSPG Bulletin
... gradually from base to apex, apex rounded or pyramidal. Contact areas and rays of gula laevigate to granular. Curvaturae perfectae, well-defined, thickened...
1982
Core Point selection in a Gas Reservoir Using Resistivity at the Bit and Near-Bit Gamma Ray LWD Measurements: a Case Study
Adrian Manescu
Indonesian Petroleum Association
... ray detectors are placed close to the bit, enabling detection of formation gamma rays soon after the formation has been penetrated. This tool...
2015
A Roman's View of Underground Metal Mining
K. F. G. Hosking
Geological Society of Malaysia (GSM)
... observed that chest X-rays of about 500 Cornish miners had been taken in the past 12 months and that they had not shown up a single case of lung cancer...
1978
Beryllium Minerals
Robert E. Cohenour, Max Erickson
Utah Geological Association
..., as a source of gamma radiation (x-rays). The gamma radiation is of sufficient strength to cause the production of neutrons from any beryllium that is placed...
1963
Spatial Analysis of Basement and Cover Linears by Optical Diffraction - Methods, Results, and Interpretation
Howard J. Pincus, Thomas W. Doe
Utah Geological Association
... in the input. With additional optics, a filtered, reconstructed input image can be formed by blocking out selected light rays in the transform plane...
1974
Deep Crustal Structure of the Northwestern Gulf of Mexico
Yosio Nakamura ,, Dale S. Sawyer , F. Jeanne Shaub, Kevin MacKenzie , Jurgen Oberst
GCAGS Transactions
... model, we traced a set of rays in reverse direction, originating at each OBS location and ending at shot points on the sea surface, and computed...
1988
Old Electrical Log Interpretation [Pre-1958], Chapter 10: The Old Gamma Ray and Neutron Logs
Hilchie, D.W.
AAPG Special Volumes
... of which was a shield and then a detector. The detector detected gamma rays of capture (neutron gamma), thermal neutrons (neutron neutron) or epithermal...
1979
Mineralogical Analysis of Carbonate Rocks by X-Ray Diffraction: NOTES
P. W. Hughes, W. F. Bradley, H. D. Glass
Journal of Sedimentary Research (SEPM)
... comparable results in that a large percentage of X-rays pass through the slide rather than reflect from the thin-section surface. The intensity...
1960
Undulose Extinction in Fine-grained Rocks: NOTES
Robert E. Carver
Journal of Sedimentary Research (SEPM)
..., and further modified by passage upward through successive grains, the end result being that almost any given sheaf of rays emerging from the thin section...
1965
Electronprobe Microanalysis and Geochemistry of a Complex Cu-Fe-Sn-Zn Ore
Teh Guan Hoe
Geological Society of Malaysia (GSM)
.... A high energy beam of electrons from the electron gun strikes the polished surface of the sample emitting characteristic X-rays among other secondary...
1996
Gaining Insight into Formation Anisotropy Using Full Azimuth Imaging and Analysis Tools
Duane Dopkin, Anat Canning, Philip Neri
Petroleum Exploration Society of Australia (PESA)
... for rays travel ling from Since anisotropic ve locities are the basic seismic signatures of fractured reservoir characterisation, project...
2010
Low Power Magnification Photography of Thin Sections: NOTES
S. Duncan Heron, Jr.
Journal of Sedimentary Research (SEPM)
... of thin sections. The slightly darker areas around the borings stand ont because they absorb the infrared rays, apparently because of a slightly...
1968
Clay Mineral Composition of the Tipton Shale Member of the Green River Formation (Eocene) of Wyoming: NOTES
Ronald Tank
Journal of Sedimentary Research (SEPM)
... of the lacustrine Green River Formation (Eocene). Material amorphous to X-rays and mixed-layer structures are present in subordinate amounts. These minerals...
1969
A New and Cost-Effective Way to Estimate Production in Unconventional Fields Using Advanced Multiphase Flowmeter Technology in North Dakota
Katharine Moncada, Liviu Husoschi, Benjamin Marnon, Bertrand Theuveny, James A. Dodds, Jean-Philippe Hussenet
Unconventional Resources Technology Conference (URTEC)
... by measuring the absorption of the gamma rays that pass through the venturi section and reach the scintillation detector. To enhance the measurement...
2024
EXTENDED ABSTRACT: New Vertebrates from the Paleogene of Eastern Texas
Thomas A. Stidham and Tracey A. Janus
GCAGS Transactions
..., rays, crocodilians, and turtles. The fish fauna includes teeth, bone fragments, and scales of catfish (Siluriformes), drum (Sciaenidae...
2008
Tea Kettle Carbonates
John C. Butler
Journal of Sedimentary Research (SEPM)
... to remove the carbonate. Material insoluble in acid, which is amorphous to X-rays, was heated for 24 hours at 1050°C. This material lost approximately...
1975
Planimetric Shape of Wreck Bay, Vancouver Island: REPLY
P. H. Leblond, J. M. Bremner
Journal of Sedimentary Research (SEPM)
.... S., 1966, A method for calculating and plotting surface wave rays: Coast. Eng. Res. Center, U.S. Army Eng., Tech. Memo 17, 57 p. End_of_Record - Last...
1976
Flatfish Feeding Traces in the Minas Basin
M. J. Risk, H. D. Craig
Journal of Sedimentary Research (SEPM)
... a feeding trace made by a ray on a Georgia tidal stream sand bar. Cook (1971) reported resting depressions of skates, rays and flatfish in nearshore...
1976
Method of Reconnaissance Geological Survey: GEOLOGICAL NOTES
J. V. Harrison
AAPG Bulletin
... position being determined by resection. From here, rays were drawn to intersect chosen points around, and then the range-finder was used to fill...
1952
Sample Packer for Randomly Oriented Powders in X-ray Diffraction Analysis: METHOD PAPER
Leonard G. Schultz
Journal of Sedimentary Research (SEPM)
... of the grid surface, decreases the intensity of diffracted X-rays by about 10 percent compared with the intensity from powder pressed firmly...
1978
Color Differentiation in "Fried Egg" Stalagmites
Barry F. Beck
Journal of Sedimentary Research (SEPM)
... differentiation. Transmitted x-rays show a sharp contrast between the white and yellow portions of the stalagmite, the white being less dense. Microscopic...
1978
Preliminary X-Ray Investigation of Solid Hydrocarbons: GEOLOGICAL NOTES
Robert S. Young
AAPG Bulletin
..., "The Low Angle Scattering of X-rays by Various Coals," Discussion in Proc. of a Conference on the Ultra-Fine Structure of Coals and Coke, B.C.U.R.A....
1954
Biohermal Traps - Current Direction of Oil-Gas Exploration in Transitional Structural Complex of Nyurol Rift
V. A. Beneson, N. I. Karapusov, S. S. Kosova
Petroleum Geology: A Digest of Russian Literature
.... Finally with construction of the strata model using refracted rays deep migration of the time section was accomplished. See figure 2. Figure 2. Deep...
2002