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The AAPG/Datapages Combined Publications Database
Showing 432 Results. Searched 200,599 documents.
Weathering pits versus trample marks: a reinterpretation of the Dinosaur Dance Floor: a Jurassic Navajo Sandstone surface in the Vermilion Cliffs National Monument, Arizona
Brent H. Breithaupt, Marjorie A. Chan, Winston M. Seiler, Neffra A. Matthews
PALAIOS
... bar precision represent approximately 0.1 pixel making total project accuracy plus or minus 0.4 mm. Digital surface model (0.7 mm resolution), digital...
2021
Natural Gas in Eastern Kentucky
Coleman D. Hunter
AAPG Special Volumes
...------------------------ Fig. 2. Eastern Kentucky showing faults, closures plus and minus, anticlines, synclines. Lines of structure sections, marked...
1935
Sequence Stratigraphy of the Bridal Veil Limestone Member of the Oquirrh Formation (Lower Pennsylvanian) in the Central Wasatch Range, Utah — Towards a Bashkirian Cyclostratigraphy for the Oquirrh Basin
David J. Shoore, Scott M. Ritter
Utah Geological Association
... organisms (brachiopods, bryozoans, pelmatozoans, ostracodes, and siliceous sponges) plus or minus calcareous red algae. Heterozoan grain assemblages...
2007
Paleohydrology of Some Ogallala (Neogene) Streams in the Southern Panhandle of Nebraska
R. G. Goodwin, R. F. Diffendal Jr.
Special Publications of SEPM
.... The diameter of the 25th pebble in the ordered set was taken as a measure of D50 for the site. The average for all four sites was 0.024 I 0.002 m where the plus...
1987
Physical Characteristics and Aging of Gulf Coast Estuaries
Wayne C. Isphording , F. Dewayne Imsand , George C. Flowers
GCAGS Transactions
.... The depth difference (plus or minus) for each square was then multiplied by the area of the square in order to compute the sediment volume that had...
1989
Pinedale Anticline and Jonah Fields, Sublette County, Wyoming: A Geologic Discussion and Comparison
Dean P. DuBois
AAPG Special Volumes
... lines represent the linear regression correlation shown in the equation below each plot along with a line for plus and minus one standard deviation...
2014
Sources of Suspended Matter in Waters of the Middle Atlantic Bight
Robert H. Meade , Peter L. Sachs, Frank T. Manheim , John C. Hathaway, Derek W. Spencer
Journal of Sedimentary Research (SEPM)
... that correspond to a given nephelometer reading in shelf waters may be plus or minus 100 µg/l. FIG. 6. Suspended matter (A), salinity and temperature (B...
1975
Numerical Modeling of Ooid Size and the Problem of Neoproterozoic Giant Ooids
Dawn Y. Sumner, John P. Grotzinger
Journal of Sedimentary Research (SEPM)
... as the water velocity in the previous column plus or minus the constant difference in velocity V between neighboring columns. The water velocity also changes...
1993
Geomorphic Thresholds and Complex Response of Fluvial Systems--Some Implications for Sequence Stratigraphy
William A. Wescott
AAPG Bulletin
... (^lgr), sinuosity (P), slope (S), and width/depth ratio (F). By using plus and minus exponents to show an increase or decrease in the variables, Schumm...
1993
Reservoir Characterization and Diagenesis of the Oligocene 64-Zone Sandstone, North Belridge Field, Kern County, California
Thomas R. Taylor , Charles H. Soule
AAPG Bulletin
... precipitation (Figure 17). For calcite II, we used a temperature range of 113 to 149°C (mean plus or minus two standard deviations). The results indicate...
1993
The Geochemistry of Hydrocarbons and Potential Source Rocks from the Los Angeles and Ventura Basins, Data Synthesis and Text, v. I: 1986
I. R. Kaplan, M. H. Alimi, C. Hein, A. Jeffrey, M. R. Lafferty, M. P. Mankiewicz, D. E. Meredith, E. B. Edwards, W. S. Dixon
Pacific Section of AAPG
... of each parameter relative to the overall mean, and marks the center plus or minus one standard deviation. For the four major subsets of data...
2000
Structural Geology and Tectonic Evolution of the Los Angeles Basin, California: Chapter 3: PART 2
Thomas L. Wright
AAPG Special Volumes
... to it. Yeats (1978) dated the acceleration of subsidence rates in the Ventura basin at about 4 Ma, plus or minus 1 m.y., and suggested a similar history...
1991
Facies and Stratigraphic Anatomy of a Temperate Carbonate Sequence (Capo Colonna Terrace, Late Pleistocene, Southern Italy)
Ronald Nalin, Francesco Massari
Journal of Sedimentary Research (SEPM)
... sequence. Of these, biogenic-dominated facies are invariably made up of skeletal remains of light-independent organisms plus or minus red calcareous...
2009
Shaken and stirred: Seismites and tsunamites at the Permian-Triassic Boundary, Guryul Ravine, Kashmir, India
M.E. Brookfield, T.G. Algeo, R. Hannigan, J. Williams, G.M. Bhat
PALAIOS
... and Wilkinson, 1991). In view of these considerations, we tentatively estimate the depth of deposition of Khunamuh Formation argillites as 100 m plus or minus...
2013
Description and Quantification of the Ground-Water Basins of the Wasatch Front, Utah, 1904-1994
Joseph S. Gates
Utah Geological Association
... equalling discharge for steady-state conditions, or recharge equalling discharge plus or minus changes in storage for non-steady-state conditions. Later...
1995
Central Basin of Appalachian Geosyncline
Robert C. Lafferty
AAPG Bulletin
... 25 feet plus or minus. As most detailed structure maps are constructed with 25-foot contours, this error is far less important than the ever present...
1941
Hydrothermal Mineralization in the Guaymas Basin, Gulf of California: Chapter 34: Part VI. Hydrothermal Processes
Jan M. Peter, Steven D. Scott
AAPG Special Volumes
... the distribution of aqueous species at 25°C, 1 bar and extrapolating to 315°C, 200 bars. The pH range shown on Figure 9 corresponds to 6.5 plus or minus...
1991
Lower Carboniferous Reefs of Northern England
Donald Parkinson
AAPG Bulletin
... that the dip of the flanking beds "represents an original dip of deposit, plus or minus any subsequent tilting by movement of the crust" (1890, p. 486...
1957
Carbonate Recrystallization in Shallow Marine Environments: A Widespread Diagenetic Process Forming Micritized Grains
R. Pamela Reid , Ian G. Macintyre
Journal of Sedimentary Research (SEPM)
... microprobe analyses at points in C; data are average values plus or minus one standard deviation. E) X-ray diffractogram of the second half...
1998
Reactive transport modeling of early burial dolomitization of carbonate platforms by geothermal convection
Fiona F. Whitaker, Yitian Xiao
AAPG Bulletin
... the entire area by plus or minus one order of magnitude, with considerable impact on the predicted rate of dolomitization (Figure 10). Comparisons...
2010
Jurassic deep-water reservoirs at a transfer-transform offset: Modeling the mixed carbonate-siliciclastic Shelburne subbasin, southeastern Canadian margin
Justin Nagle, David J. W. Piper, E. Marfisi, Georgia Pe-Piper, and F. Saint-Ange
AAPG Bulletin
.... To simulate the extremes of sediment transport, the diffusion coefficients for sand in a continental and marine environment were varied plus or minus an order...
2024
Mines and Geology of the San Francisco District, Beaver County, Utah
William B. Wray
Utah Geological Association
... dates range from 28.7 to 31.8 mybp, plus / minus 1.0 m.y. The true age is assumed herein to range from ca. 32-30 mybp. Oligocene, Horn Silver...
2006
Introduction to the Big Horn Basin
G. H. Halverson
Earth Science Bulletin (WGA)
... flanks to a projected 8000 plus or minus feet in the center of the basin. Some remnants of the overlying Tatman Formation exist in the central basin...
1981
Road Logs for 1986 AAPG Rocky Mountain Section Meeting in Casper, Wyoming Fieldtrip #5 Casper to Cody, Wyoming September 11-13
Kent A. Sundell
Earth Science Bulletin (WGA)
... wedge on the basin flanks to a projected 8000 plus or minus feet in the center of the basin. Some remnants of the overlying Tatman Formation exist...
1986
Stratigraphic Completeness of Carbonate-Dominated Records From Continental Interiors Versus Continental Margins: Stratigraphic Thinning Occurs Via Condensation and Omission At Multiple Scales
Mara E. Brady
Journal of Sedimentary Research (SEPM)
... exposure, before subsequent flooding (plus or minus erosion) and deposition of the overlying cycle. These cycles also imply low carbonate production or high...
2015