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The AAPG/Datapages Combined Publications Database
Showing 33,062 Results. Searched 195,387 documents.
Texture as Characteristic of Clastic Deposition
R. Passega
AAPG Bulletin
... in suspension, their deposits form Pattern V. This pattern makes a small angle with the ordinates. C may vary considerably with little effect...
1957
The Wave Equation Applied to Migration
D. Loewenthal, L. Lu, R. Roberson, J. Sherwood
Southeast Asia Petroleum Exploration Society (SEAPEX)
... dipping event is propagated via the finite difference equations at an angle of 6 to 10 degrees less than the true angle of 39 degrees. Errors...
1978
Eolian Cross-Bedding in the Beach Dune Environment, Sapelo Island, Georgia
Lynton S. Land
Journal of Sedimentary Research (SEPM)
..., the net effect being to increase the dip angle rapidly to the angle of repose. Beds dipping at angles greater than 34 degrees probably require special...
1964
Depth conversion and seismic inversion of the Scarborough gas field
Joseph Kremor, Manish Agarwal, Paul Spaans, Ung Sing Wong
Petroleum Exploration Society of Australia (PESA)
... with angle within the range of each partial angle stack; All errors in the recorded data are propagated into the inversion products without attenuation...
2019
Tilt-Depth: A Simple Depth-Estimation Method Using First Order Magnetic Derivatives, by James D. Fairhead, Ahmed Salem, and Simon E. Williams; #40390 (2009).
Search and Discovery.com
2009
Gravity and Magnetic Studies of the Wind River Reservation, Wyoming
Robert P. Kucks
Wyoming Geological Association
... Basin, has been a favorable location for oil and gas exploration. A geophysical study, funded by the Shoshone and Arapaho Tribal Council...
1993
Belle Isle Torsion-Balance Survey, St. Mary Parish, Louisiana
Donald C. Barton
AAPG Bulletin
... to the thickness of the cap, 58 per cent correct. The causes of the errors were probably the unfavorable marshy terrane, the assumption of a slightly...
1931
Abstract: Q-estimation from Uncorrelated Vibroseis VSP Model Data; #90172 (2014)
Arnim B. Haase
Search and Discovery.com
... is the delayed onset of the signal at the deeper station. Less noticeable is the increased decay rate at depth. The cross-correlation result of the received...
2014
Petrographic Study of Salt-Dome Cap Rock: RESEARCH NOTES
Donald C. Barton
AAPG Bulletin
... conclusions are here stated briefly. 1. The limestone cap is an alteration product of the gypsum-anhydrite cap. 2. Alteration is not an effect...
1930
Photogeologic Fracture-Trace Mapping in Appalachian Plateau: GEOLOGICAL NOTES
L. H. Lattman , R. P. Nickelsen
AAPG Bulletin
.... A good check on joint directions in the bedrock could be made in the strip mines. The relief of 400 feet would allow some observations on the effect...
1958
Measurement of Subsurface Fractures from Dipmeter Logs
E. A. Babcock
AAPG Bulletin
..., even where the hole is essentially round, one electrode pair shows a slightly wider separation (the effect is probably due to calibration errors...
1978
Wind-Oriented Gastropod Shells as Indicators of Paleowind Direction: NOTES
J. Mark Erickson
Journal of Sedimentary Research (SEPM)
... was made of use of individual fossil shells directly as wind current indicators. LOCATION AND GENERAL DESCRIPTION The coast along Tomales Bay south...
1971
The Effects of Seismic Data Conditioning on Pre-Stack Simultaneous Impedance Inversion
Scott W. Singleton
GCAGS Transactions
... effect of creating very similar wavelets in all angle stack ranges, with the exception of a minor fall-off in high frequencies in the farther angles...
2008
Granite and Limestone Velocity Determinations in Arbuckle Mountains, Oklahoma
B. B. Weatherby, W. T. Born, R. L. Harding
AAPG Bulletin
... within observational errors and yield a value of 17,950 ft./sec. for the longitudinal wave velocity. The data taken over the shorter span show...
1934
Accuracy of Bore-Hole Surveying by Orientation from the Surface
R. P. Mclaughlin
AAPG Bulletin
... effect of erratic behavior of the drill pipe. Consideration of the magnitude of errors arising from inaccurate measurement of pipe rotation is a broad...
1930
Abstract: Resolution and Location Uncertainties in Surface Microseismic Monitoring; #90174 (2014)
Michael Thornton
Search and Discovery.com
..., resolution and uncertainty are distinct. Resolution refers to the size and shape of the focused event image, while location uncertainty describes the effect...
2014
Influence of Lithologic Variability on the Distribution of Oil in Natural Reservoirs, and the Construction of Reservoir Maps
V. G. Umnov
Petroleum Geology: A Digest of Russian Literature
.... With an increase in sandiness at the top of the stratum, the opposite effect arises: The pool extends to the flank of the structure. With lithologic variations...
1960
Shallow Temperatures and Thermal Regime in the Hydrocarbon Province of Tierra del Fuego
Gary W. Zielinski , Peter M. Bruchhausen
AAPG Bulletin
... with the RMS error for each regression as a function of µ. RMS errors are generally low and in the millidegree range. However, with the exception of station 4...
1983
Regional detection and monitoring of injection-induced seismicity: Application to the 2010–2012 Youngstown, Ohio, seismic sequence
S. G. Holtkamp, M. R. Brudzinski, and B. S. Currie
AAPG Bulletin
... record each of the template earthquakes (Figure 13). We include the local short period seismic station YSUO, but the absolute location does not change...
2015
The Deep Crustal Structure of the Wilkes Land Continental Margin
J. R. Childs, H. M. J. Stagg
Circum Pacific Council Publications
... of the reconstruction method, probably because of the great distance between the survey area and base station location. However, comparison of the magnetometer base...
1987
Geometric Models of Listric Normal Faults and Rollover Folds (1)
WILLIAM F. DULA, JR.
AAPG Bulletin
... and shapes of the master-fault segments interpreted fr m offshore Norway and Gulf of Mexico seismic lines. The shear angle required in the inclined-shear...
1991
The Composition, Structure and Erodability of Subtidal Mats, Abaco, Bahamas
A. Conrad Neumann, Conrad D. Gebelein , Terence P. Scoffin
Journal of Sedimentary Research (SEPM)
..., and the Sound (fig. 2)--were selected for more intensive and detailed examination and experimentation. FIG. 2. Location of specific study areas. Station...
1970
Abstract: Seismic Data Processing in Anisotropic Media, by V. Celis; #90951 (1996).
Search and Discovery.com
1996
Challenges in Imaging the Deep Seabed: Examples from Gulf of Mexico Cold Seeps
Carol B. Lutken, Marco D’Emidio, Leonardo Macelloni, Mariangela Lodi, Michela Ingrassia, Martina Pierdomenico, Vernon Asper, Arne Diercks, Max U. Woolsey, Roy Jarnagin
GCAGS Transactions
...; and 5) instrument location/recovery. Using coarser resolution surveying for regional studies, then focusing higher resolution surveys on areas...
2013
Part 3: Support Data (A)
Francis P. Shepard, Neil F. Marshall, Patrick A. McLoughlin, Gary G. Sullivan
AAPG Special Volumes
... in an easterly direction but the shallow station shows net upcanyon flow whereas the deeper ones show net downcanyon flow. The effect of the northwest wind...
1979