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The AAPG/Datapages Combined Publications Database
Showing 21,675 Results. Searched 200,691 documents.
Marine Unconformities, Marine Conglomerates, and Thicknesses of Strata
W. H. Twenhofel
AAPG Bulletin
... is examined from the points of view of the places of deposition, the depths of water, and the relation of the sites of deposition to sea-level...
1936
Remote sensing detection of heavy oil through spectral enhancement techniques in the western slope zone of Songliao Basin, China
Guifang Zhang, Lejun Zou, Xiaohua Shen, Shanlong Lu, Changjiang Li, Hanlin Chen
AAPG Bulletin
... before spectral enhancement, and the root-mean-square (RMS) error was less than 1 pixel. The RMS error is the distance between the input (source...
2009
Fluid Dynamics of Viscous Buckling Applicable to Folding of Layered Rocks
Hans Ramberg
AAPG Bulletin
... in the competent layers furnishes the independent relation between A and B necessary for determination of these two coefficients. The expressions so determined...
1963
Groundwater Monitoring and Isotope Investigation of Contaminated Wastewater from an Open Pit Mining Lake
Bernd Eccarius
Environmental Geosciences (DEG)
... show an average ammonium content of <1 mg/L and δ15N values between −3 and +11%. UFZ 2 is the only well showing differences with high ammonium...
1998
Wave-Formed Sedimentary StructuresA Conceptual Model
H. Edward Clifton
Special Publications of SEPM
... The relation of OJ 7 Figure be combined with can the threshold velocities of 3 r Figure 4 and the maxi mumwave heights indicated in Figure 2...
1987
Sedimentary Environments of Shark Bay, Western Australia
Brian W. Logan , Donald E. Cebulski
AAPG Special Volumes
... are based on average current velocities and shortest routing of the water parcel. Therefore, it seems probable, because of vagaries of current...
1970
Presence of Preferential Flow Paths in Shallow Groundwater Systems as Indicated by Tracer Experiments and Geophysical Surveys
Murray E. Close, David C. Nobes, Liping Pang
Special Publications of SEPM
..., karst, and alluvial-gravel groundwater systems. Flow velocities can vary by an order of magnitude within such systems. This study focuses on alluvial...
2004
A Re-examination of the Use of the Silt/Clay Ratios as Indicators of Sedimentary Environments: A Study for Students
B. R. Pelletier
Atlantic Geology
... of the open ocean in shallow to moderate depths; average current velocities range from 1 to 10 cm/ sec in the deeper parts of the shelf to about 15 to 35 cm/sec...
1973
Isostasy and Tectonic Origins of Pacific Seamounts
Jeffery T. Freymueller, James N. Kellogg
Circum Pacific Council Publications
... was estimated from the difference between the observed anomaly and the calculated anomaly for the bathymetry alone. Using only the on-axis anomaly permits...
1992
Land 3D Acquisition Techniques Related to S.E. Asian Situation
Walter Ritchie
Indonesian Petroleum Association
... points of lines acquired along different orientations require different stacking velocities dependent on line direction and structural content...
1981
Collection and Processing of Digitized Acoustic Log Data
R. A. Broding J. L. Poole
CSPG Bulletin
... and Gardner (1956) first proposed the Time Average formula as a means for deriving porosity from the velocity measurement: This relation of porosity...
1960
Application of the Instantaneous Quality Factor (Q) in the Characterization of the Austin Chalk and Eagle Ford Shale, South Texas, #41781 (2016).
Osareni Ogiesoba
Search and Discovery.com
... velocities, it has strong relation to: (1) porosity (2) permeability (3) fractures • It indicates local variation of Q factor, similar to relative...
2016
Velocity for Pore Pressure Prediction Modeling and Risk Assessment; #41819 (2016).
Selim Simon Shaker
Search and Discovery.com
.... Moreover, it leads to a misfit between the predicted and the real time measured values in the over-pressured formations. The purpose of this study...
2016
Hydrogeology of the Markagunt Plateau, Southwestern Utah
Lawrence E. Spangler
Utah Geological Association
... quality of Mammoth Spring and the relation between the contributing (recharge) area for the spring and adjacent springs. The objectives of the study...
2010
Gravity Anomalies and Passive Continental Margins, Canada and Norway
L. W. Sobczak
CSPG Special Publications
... and the edge effect anomaly between continental and oceanic crusts in isostatic equilibrium (Airy) accounts for most of the gravity high along the break...
1975
Seismic Recognition of Salt Diapirs: GEOLOGIC NOTES
Hans H. Lohmann
AAPG Bulletin
...-base reflection, seismic-interval velocities, and halokinetic relation with surrounding sediments and adjoining diapirs. However, these well-known...
1979
The Effect of Gravitational Compaction on the Structure of Sedimentary Rocks: A REPLY TO A DISCUSSION BY W. W. RUBEY
Hollis D. Hedberg
AAPG Bulletin
... practical value. An idea of the general relation between pressure and porosity and the order of magnitude of the change in the one, contingent...
1927
Paleotopography: Key to Locating Concealed Structure and Related Petroleum Traps: ABSTRACT
H. M. Degraw
AAPG Bulletin
... no recognizable relation between modern topography and underlying petroleum reservoirs. However, mapping of buried unconformities shows a definite relation...
1972
Baffin Bay: Small Ocean Basin Formed by Sea-Floor Spreading
C. E. Keen , M. J. Keen , D. I. Ross , M. Lack
AAPG Bulletin
... with the average level of the Mid-Atlantic Ridge. He used the relation between the age of the oceanic crust and depth to the crustal layer...
1974
Sand Movement Along Equilibrium Beaches North of San Francisco
John A. Cherry
Journal of Sedimentary Research (SEPM)
... have relatively permanent configurations which often are the result of an equilibrium adjustment between the predominant swell waves, the predominant...
1966
Role of the Bosporus in Black Sea Chemistry and Sedimentation: Water
R. Scholten
AAPG Special Volumes
... the southward (top) current is not affected by strong winds, the mathematical relation between the interface slope angle and the hydraulic head, grad h...
1974
Growth Fault-Bend Folding at Southeast Lost Hills, San Joaquin Valley, California
Donald A. Medwedeff
AAPG Bulletin
...), a sonic velocity log from well 28 is used to calculate average formation velocities (Table 2). These velocities are extrapolated throughout the structure...
1989
Evolution of the Northern Gulf Coast Deduced from Geophysical Data (1)
J. Lamar Worzel , Joel S. Watkins
GCAGS Transactions
... are consistent with an inferred general collapse in late Mesozoic. The westward increase in the water depth discrepancy may indicate a relation between...
1973
The Identification of Volcanics and its Application for Reservoir Prediction of Bioclastic Dolostone: An Example From Bohai Bay Basin; #20240 (2014)
Jun Ming, Tongxing Xia, and Qingyun Bai
Search and Discovery.com
... the relation between the interval velocity of volcanics and the proportion of high-speed basalt. 4) Last, considering the fact that the thickness of basalt...
2014
Depositional Systems of the Alabama, Mississippi, and Western Florida Coastal Zone (1)
Peter A. Boone
GCAGS Transactions
... between the Pascagoula and Pearl Rivers so that the total average annual discharge to the estuarine system is 31,200 cubic feet per second (883 m3/sec) from...
1973