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The AAPG/Datapages Combined Publications Database
Showing 432 Results. Searched 200,693 documents.
Carbonate Sediments in the Capricorn Reef Complex, Great Barrier Reef, Australia
W. R. Maiklem
Journal of Sedimentary Research (SEPM)
... of the time the true value is within the range of the determined value plus or minus the precision. The practical limit of detectability is of interest...
1970
Stratigraphy of Waller and Harris Counties, Texas
R. L. Beckelhymer
AAPG Bulletin
... (FOOTNOTE 13). In Waller and Harris counties, it is well developed having a thickness of 750 feet plus or minus. The top is usually recognized where the blue...
1946
Investigation of Source Rock-Crude Oil Relationships in the Northern Alaska Hydrocarbon Habitat
R. A. Sedivy, I. E. Penfield, H. I. Halpern, R. J. Drozd, G. A. Cole, R. Burwood
Pacific Section SEPM
... kerogen pyrolyzate isotopic compositions for e a c h candidate source, expressed as a mean plus or minus one standard deviation. 178 R. A. SEDIVY...
1987
Measurement and Analysis of Fractures in Core
John C. Lorenz, Robin E. Hill
Rocky Mountain Association of Geologists
... discrepancy exists between the two, or if the PSL rotates more than 10 to 15 / f t (so that the common plus-or-minus one-foot uncertainties in depth...
1992
Deformed displacive halite crystals: Diagenetic or tectonic origin?
Christoph Leitner, Robert Marschallinger, Konstantin Huber
Journal of Sedimentary Research (SEPM)
... are within the mean plus or minus a quarter of its value. It is a characteristic feature that the crystals of a certain sample are all in the same...
2021
Geology and Geophysics Showing Cap Rock and Salt Overhang of High Island Dome, Galveston County, Texas
Michel T. Halbouty
AAPG Special Volumes
..., and due to the waves picking up the salt, it is subject to a plus or minus horizontal correction of about 100 feet. The dotted curve gives the dome...
1936
Geology and Geophysics Showing Cap Rock and Salt Overhang of High Island Dome, Galveston County, Texas
Michel T. Halbouty
AAPG Bulletin
... was determined by a seismograph survey, and due to the waves picking up the salt, it is subject to a plus or minus horizontal correction of about 100 feet...
1936
Significant Production Improvement of UltraLow Permeability Granitic Reservoirs to Develop Heavy Black Oil, Utilizing Channel Fracturing Technique
Mostafa Mahmoud Kortam, Samir Siso, Nelly Mohamed Abbas, Ahmed Salah, Atef Hesam, Andrea. Cilli, Ahmad Kamar, Fatmaelzahraa Khafagy
Africa Energy and Technology Conference, 2016
... uniform length,” plus or minus 20%. Sintered rod dimensions may have a length to width ratio (this term is also intended to encompass the length...
2016
Use of Ceramic Sherds for Stratigraphic and Process Interpretations of Recent Coastal Deposits in Malaysia
T. T. Khoo
Geological Society of Malaysia (GSM)
...) and experts are reputed to be able to date the Kraak porcelain up to plus or minus 10 years or even lesser. In contrast to the rapidly evolving Kraak...
1999
Sedimentology of Organic Matter in Upper Tithonian-Berriasian Deep-Sea Carbonates of Southeast France: Evidence of Eustatic Control: Chapter 5
D. Steffen, G. E. Gorin
AAPG Special Volumes
... to 500 particles, but it appears that, after a count of 200, the relative proportions expressed as percentages show only minor changes [plus or minus 1...
1993
Diagenetic History and Reservoir Characterlstics of a Deep Minnelusa Reservoir, Hawk Point Field Powder River Basin, Wyoming
Susan W. James
Rocky Mountain Association of Geologists
.... In any case, the “n” used for this reservoir should be 2 plus or minus 0.1 ACKNOWLEDGMENTS I am grateful to Ben Hull, Dan Hartmann, Steve Fryberger...
1989
High- and Low-sinuosity Stream Deposits, with Examples from the Devonian of Spitsbergen
M. Moody-Stuart
Journal of Sedimentary Research (SEPM)
... on mean grain size were fitted to the points for the two types. The lines for plus and minus twice the standard error of estimate are shown...
1966
Relationship of Uranium to Petrography of Caliche Paleosols with Application to Precisely Dating the Time of Sedimentation
E. Troy Rasbury , William J. Meyers , Gilbert N. Hanson , Robert H. Goldstein , Arthur H. Saller
Journal of Sedimentary Research (SEPM)
... shows the scatter in the Pb isotopes with respect to the U/Pb ratio. Few samples plot outside a 208Pb/204Pb of plus or minus 1% of 38.5. TABLE 1. U...
2000
Volumetric and 3-D Property Modeling of the Grand Tower Formation in the Salem Field, Southern Illinois; #30542 (2018)
Mansour Khosravi Rokrok
Search and Discovery.com
... reservoir zones, the oil water contact is likely assumed to be -2900 depth subsea plus or minus. Equations used for volumetric calculations are as follows...
2018
Fracture Density in the Deep Subsurface: Techniques with Application to Point Arguello Oil Field (1)
WAYNE NARR
AAPG Bulletin
..., and the thinner, bounding curves show plus and minus one standard deviation of the estimate. After constructing these theoretical plots, the observed...
1991
Marmaton Group East Flank of the Nemaha Ridge: North-Central Oklahoma
J. Glenn Cole
Oklahoma City Geological Society
... as they do in the western ranges (Berg, 1968, Plate XI, Richardson, 1965, Fig. 5A). Therefore, no attempt was made to follow Berg's method of depicting...
1973
Spatial Change of Grading Pattern of Subaqueous Flood Deposits In Lake Shinji, Japan
Yu Saitoh, Fujio Masuda
Journal of Sedimentary Research (SEPM)
... sand beds in cores I and II: A) bed thickness; B) mean bulk grain diameter. Error bar covers plus and minus 1 sigma. Table 1. Horizons, thickness, mud...
2013
Spatial Change of Grading Pattern of Subaqueous Flood Deposits In Lake Shinji, Japan
Yu Saitoh, Fujio Masuda
Journal of Sedimentary Research (SEPM)
... sand beds in cores I and II: A) bed thickness; B) mean bulk grain diameter. Error bar covers plus and minus 1 sigma. Table 1—. Horizons, thickness...
2013
Modeling Tidal Bedding In Distributary-Mouth Bars
Nicoletta Leonardi, Tao Sun, Sergio Fagherazzi
Journal of Sedimentary Research (SEPM)
... areas where there is deposition of only mud. The sand limit is the location beyond which sand deposition ceases. Plus and minus signs indicate positive...
2014
Dynamics of Marine Transgression onto a Non-Linear Shoreline: The Middle Cambrian Flathead Sandstone, Clarks Fork Valley, Wyoming
R.A. Beebee, Rónadh Cox
Rocky Mountain Association of Geologists
..., with muscovite as the most abundant. Four hundred framework g r a m In each sample were counted, corresponding to a maximum 2 slgma error of plus or minus...
1998
Upper Cretaceous Medicine Hat Formation and First White Speckled Shale in Southeastern Alberta: Evidence for Localized Shallow Water Deposition
Claudia J. SchroDer-Adams, Peter J. Adams, Dale A. Leckie, John Bloch, Jim Craig, Safaa A. Seif El-Dein
CSPG Bulletin
... was performed on oriented clay samples (< 3µm diameters) using "Enraf Nonius Delft Diffractis 582" with Cuk radiation (plus or minus 10 per cent error...
1997
Natural Fractures on the Pinedale Anticline as Seen in Cores and on Image Logs
Mark Longman, Erika Davis, Randy J. Koepsell
AAPG Special Volumes
... near N30°W plus or minus a few degrees, which represents the present-day principal stress direction (σ1) along which natural and artificially induced...
2014
Three-Dimensional Geologic Block Modeling Of The Kutcho Creek Massive Sulfide Deposit, British Columbia: Chapter 15
David E. Hamilton, Robert S. Didur
AAPG Special Volumes
... error between the topography grid and the collars. Most errors were plus or minus a few meters. A grid of error was built and added to the initial...
1992
Diagenetic Clinoptilolite and Opal-CT from the Middle Eocene Wittering Formation, Isle of Wight, U.K.
J.M. Huggett, A.S. Gale, D.S. Wray
Journal of Sedimentary Research (SEPM)
...). Sample positions are described as plus or minus their height above or below a central point that is the burrowed base of glauconitic sandstone C (Fig...
2005
Construction and Application of a Stratigraphic Inverse Model
Timothy A. Cross, Margaret A. Lessenger
Special Publications of SEPM
... Expected o o ll o o o o ll o o o N ll N o C o ll C Distance FIG values 9 TecIonic subsidence plus and minus one as a function...
1999