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The AAPG/Datapages Combined Publications Database
Showing 432 Results. Searched 200,693 documents.
Aeromagnetics of Southern Alberta within Areas of Hydrocarbon Accumulation
G.E. Leblanc,, W.A Morris
CSPG Bulletin
... such a filter is effectively applied from plus to minus infinity. A direct consequence is that while the filter will identify the high-frequency signals...
1999
Chapter 8: Impact of Depositional and Diagenetic Heterogeneity on Multiscale Mechanical Behavior of Mancos Shale, New Mexico and Utah, USA
Hongkyu Yoon, Mathew D. Ingraham, Joseph Grigg, Benjamin Rosandick, Peter Mozley, Alex Rinehart, William M. Mook, Thomas Dewers
AAPG Special Volumes
... of sand. Rather, it may also be related to the systematic variation of moduli of sands and grain contact welding plus or minus quartz cement. This could...
2019
Rock Multielement Geochemistry at the Copper-Gold Anomaly in Kaputusan (Bacan Island), Moluccas, Indonesia
H. Pudjowalujo, D. Bering
Circum Pacific Council Publications
... rocks can be explained by plus or minus neutral pH values during weathering, which are caused by locally low total sulfide content. This plus or minus...
1982
Lithofacies Definition in Cutler and Honaker Trail Formations, Northeastern Paradox Basin, by Sedimentologic Observations and Spectral Gamma-Ray Data
R. D. Cole, G. E. Moore, A. S. Trevena, R. A. Armin, M. P. Morton
Utah Geological Association
... to be plus-or-minus 7.5 cps (one standard deviation) for the TCGR measurements and plus-or-minus 3.6 cps (one standard deviation) for the SGR...
1996
Identification of Third (10(6) yr) and Fourth (10(5)/10(4) yr) Order Stratigraphic Cycles in the Louisiana Offshore
Allen Lowrie , Patricia J. Meeks , Karen Hoffman
GCAGS Transactions
... in the basin center, is dated as 1.5 Ma, based on the extinction of Angulerigina B; the uncertainty is a plus/minus 100,000 yr (John Dunlap, personal...
1996
Estimating Resources and Reserves in Tight Sands: Geological Complexities and Controversies; #120020 (2009)
Creties Jenkins
Search and Discovery.com
... uncertainty of plus or minus 50%, even in fields with large datasets and long production histories. What can be done to reduce this uncertainty? 3. Net pay...
2009
Geochemical Differentiation of Oil and Gas Brine from Other Saltwater Sources Contaminating Water Resources: Case Studies from Kansas and Oklahoma
Donald O. Whittemore
Environmental Geosciences (DEG)
.... The injection brine endpoints represent the Br/Cl value plus and minus the sum of the analytical error and the possible variation in the mixture...
1995
Petrology and Geochemistry of Submarine Lavas from the Lau and North Fiji Back-Arc Basins
John M. Sinton, Richard C. Price, Kevin T.M. Johnson, Hubert Staudigel, Alan Zindler
Circum Pacific Council Publications
... et al. (1976); data from Melson et al. (1977). Heavy lines show the effect on the projection position of plus and minus one standard deviation from...
1994
Describing Difficult Shell-Hash Assemblages from the Lower Cambrian Soltanieh Formation, Alborz Mountains, Northern Iran
Amelia Lindsay-Kaufman, Stephanie A. Rosbach, Lauren S. Wright, Emily L.V. Edwards, Seyed Hamid Vaziri, Mahmoud Reza Majidifard, Tara Selly, Marc Laflamme, James D. Schiffbauer
PALAIOS
... of expansion; and 6 SE ¼ plus/minus standard error. All linear measurements reported in mm; angle measurement reported in degrees. Source Pop. MDM-iii...
2022
Glacioeustatic Fluctuations: The Mechanism Linking Stable Isotope Events and Sequence Stratigraphy from the Early Oligocene to Middle Miocene
Vitor S. Abreu, Geoffrey A. Haddad
Special Publications of SEPM
... of sequence boundaries to better than plus or minus a few million years. This resolution is often insufficient for the correlation of thirdorder sequences...
1998
Custer Formation of Texas
Robert Roth
AAPG Bulletin
... plus or minus, and the thickness of the Dog Creek is 150-225 feet. Greer formation [p. 59].-- Above the Woodward formation are red clays, shales...
1937
Geochemically focused integrated approach to reveal reservoir characteristics linked to better Montney productivity potential
J.-Y Chatellier, K. Simpson, R. Perez, N. Tribovillard
CSPG Bulletin
... fit RMA curve. At higher clay values, one appears to see an opposite trend – it does seem there can be a range of plus or minus 5 percent in XRD clay...
2018
Quantification of Tertiary Exhumation in the United Kingdom Southern North Sea Using Sonic Velocity Data
Richard R. Hillis
AAPG Bulletin
...% R0 ±0.06 at 0.7 km in the Lower Jurassic Coleby Mudstone (nine measurements, mean plus or minus one standard deviation); 0.58% R0 ±0.10 at 1.866 km...
1995
A Fulcrum Approach To Assessing Source-To-Sink Mass Balance Using Channel Paleohydrologic Paramaters Derivable From Common Fluvial Data Sets With An Example From the Cretaceous of Egypt
John Holbrook, Hamdalla Wanas
Journal of Sedimentary Research (SEPM)
... of approximately plus or minus a factor of three. This potential error remains poorly quantified, however, and is here estimated toward a maximum likely uncertainty...
2014
Frontier Areas and Exploration Techniques: Frontier Lignite Exploration in the South-Central United States
Charles C. Wielchowsky, G. F. Collins, L. K. Gerahian, E. J. Calhoun
Houston Geological Society
... depositional environment. In East Texas, most of the lignite deposits are component facies of fluvial systems; therefore, a method of locating frontier...
1977
Abnormal-Subnormal Pressure Relationships in the Morrow Sands of Northwestern Oklahoma
Arthur F. Breeze
Oklahoma City Geological Society
... as a reference datum in each well, all depths being represented as plus or minus distances from the datum. This plot shows the similarity of gradient...
1973
Contemporary Seismicity and Tectonics of the Northern and Central Coast Ranges-Sierran Block Boundary Zone, California
Ivan G. Wong, Richard W. Ely, Auriel C. Kollmann
Pacific Section of AAPG
... are compressions, and open circles are dilatations. Plus and minus signs are compressions and dilatations of less certainty, respectively. P...
1992
Origin and Geomorphology of Clinker in the Powder River Basin, Wyoming and Montana
Donald A. Coates, Edward L. Heffern
Wyoming Geological Association
... densities. Consequently, the statistical uncertainty (plus or minus) of the age determined is high. In older clinker, ages are better constrained because more...
1999
The Crustal Structure and Evolution of the Area Underlying the Magnetic Quiet Zone on the Margin South of Australia: Rifted Margins
Manik Talwani , John Mutter , Robert Houtz , Michael Konig
AAPG Special Volumes
... deviation in length (plus and minus) as given in Table 1. End_Page 165------------------------ At station 38, 8.5 km of sedimentary rock was measured...
1979
Devonian Paleoecology of Northeastern Alberta
D. M. Loranger
Journal of Sedimentary Research (SEPM)
... but contain about 40 per cent plus or minus Upper Devonian forms. The top of the Cooking Lake Formation provides a practical solution, since...
1965
Genesis of Recent Lime Mud in Southern British Honduras
R. K. Matthews
Journal of Sedimentary Research (SEPM)
... analyses of twenty samples indicate the precision of the mineralogical data to be plus or minus five percent of the reported value; the accuracy...
1966
Diagenesis Through Coupled Processes: Modeling Approach, Self-Organization, and Implications for Exploration
W. Chen, A. Ghaith, A. Park, P. Ortoleva
AAPG Special Volumes
... interval is 2%, and the plus (minus) sign means that the porosity there is higher (lower) than the average porosity of the system. (b) Temporal...
1990
"Basement" to East Coast Continental Margin of North America
M. A. Mayhew
AAPG Bulletin
... of values in layers 2 and 3 and mantle from ocean basins is means plus and minus one standard deviation from Raitt (1963). End_Page 1074...
1974
A new model for assessing trap integrity and oil preservation risks associated with postrift fault reactivation in the Timor Sea
Anthony Gartrell, Wayne R. Bailey, Mark Brincat
AAPG Bulletin
... effectively prevent or reduce leakage via these structures over time. In this case, the rate of leakage versus the initial oil volume, plus or minus...
2006
Dynamics of Sediment Movement
Gerard Middleton, John B. Southard
Special Publications of SEPM
... the center of gravity (C.G.). Plus and minus signs schematically indicate higher and lower pressures, respectively (not the actual sign of the pressure...
1984