Welcome to the new Datapages Archives
Datapages has redesigned the Archives with new features. You can search from the home page or browse content from over 40 publishers and societies. Non-subscribers may now view abstracts on all items before purchasing full text. Please continue to send us your feedback at emailaddress.
AAPG Members: Your membership includes full access to the online archive of the AAPG Bulletin. Please login at Members Only. Access to full text from other collections requires a subscription or pay-per-view document purchase.
Welcome to the new Datapages Archives
Search Results > New Search > Revise Search
The AAPG/Datapages Combined Publications Database
Showing 23,318 Results. Searched 195,372 documents.
Definition and Properties of a Variability Index of Deltaic Sediments: NOTES
Hugo Mandelbaum
Journal of Sedimentary Research (SEPM)
... layer in the core, the thickness of which was noted. For each sample the mean, standard deviation, skewness, FIG. 1. St. Clair River Delta. End_Page...
1970
Estuarine Sediment Geochemistry
Tan Teong Hing
Geological Society of Malaysia (GSM)
.... (Solid line = range, dashed line = standard deviation, dotted line = mean). E stuarine 33 sediment geochemistry standard deviations; vYith sand...
1989
Method for Determining Permeability from Reservoir Rock Properties
Robert R. Berg
GCAGS Transactions
... for the distribution of grain sizes about the median grain size. If distribution is assumed to be normal, then sorting can be expressed as standard deviation...
1970
Depositional Mechanisms from the Size Analysis of Clastic Sediments
Basanta K. Sahu
Journal of Sedimentary Research (SEPM)
... also upon the size distribution of the available source materials. (2) Standard deviation (1): Standard deviation measures the sorting of a sediment...
1964
APPLICATION OF THE TRACK ETCH TECHNIQUE FOR URANIUM EXPLORATION ON THE SANDFLY LAKE TREND, SASKATCHEWAN
L. E. W. Hogg and J. Fisher
Saskatchewan Geological Society
... soils, had a mean of 12.9 T/sq. mm, and a standard deviation of the mean of 8.1 T/sq. mm. The relative standard deviation was 63 percent. High ranking...
1977
Rapid Determination of Calcite-Dolomite Ratios in Sedimentary Rocks: NOTES
J. N. Weber, F. G. Smith
Journal of Sedimentary Research (SEPM)
...------- X-ray diffraction techniques permit rapid measurement of calcite-dolomite ratios in sedimentary rocks with a standard deviation of 1.3 percent...
1961
Plotting Equation for Gaussian Percentiles and a Spreadsheet Program for Generating Probability Plots: DISCUSSION
Neil A. Wells
Journal of Sedimentary Research (SEPM)
... for median and skewness match the values they give on their figure 4 rather than their figure 3, whereas my standard deviation and kurtosis more closely...
2003
Induced Seismicity Indicated by Cross Correlation; #41318 (2014)
Ivo Oprsal and Leo Eisner
Search and Discovery.com
... mean and low standard deviation time histories. Instead of positive-value time histories, we use their “Useful Functions” (the original functions...
2014
The Relationship between Specific Reservoir Characteristics and the Gas Productive Coals and Carbonaceous Mudstones in the Cherokee Basin; #10789 (2015)
Steven Tedesco
Search and Discovery.com
...; • Maturation related to thin Pre-Pennsylvanian Paleozoic cover and migrating low temperature hydrothermal fluids. Standard Deviation Median...
2015
Combined Geological and Surface Geochemical Methods Discovered Agaritta and Brady Creek Fields, Concho County, Texas
D. F. Saunders , K. R. Burson , J. J. Brown , C. K. Thompson
AAPG Bulletin
...-sensor anomalies, Agaritta field area. S.D. = standard deviation. A and B are general survey areas (see text). 1, 70, 71, 2083, and 2084 are section...
1993
A Method of Comparing Volume Measurements on Pebbles
R. J. Hughes, Jr.
Journal of Sedimentary Research (SEPM)
... volume measurements were made. The standard deviation, coefficient of correlation, coefficient of determination, and standard error of estimate revealed...
1963
Anatomy of an Arkansas River Sand Bar: Abstract
Richard Steinmetz
Dallas Geological Society
.... Mean grain size ranges from 0.07φ (0.95 mm) to 4.44φ (0.05 mm), and standard deviation ranges from 0.26φ to 1.48φ At most of the vertical sections...
1977
ABSTRACT: Comparison of pore size distribution on crushed and whole-rock coal samples using nuclear magnetic resonance
Yanhai Chang, Yanbin Yao
The Society for Organic Petrology (TSOP)
... the NMR is effective and reasonable. Especially in the microporous range (<0.1 μm), the RSD (relative standard deviation) is less than 5%. In addition...
2018
Anatomy of an Arkansas River Sand Bar: Abstract
Richard Steinmetz
CSPG Special Publications
.... Mean grain size ranges from 0.07φ (0.95 mm) to 4.44φ (0.05 mm), and standard deviation ranges from 0.26φ to 1.48φ At most of the vertical sections...
1977
Use of Variograms to Quantify Distribution of Barriers to Flow in Incised Valley-Fill Newcastle Sandstone, Wyoming: Abstract
Ekrem Kasap, Roderick W. Tillman
Tulsa Geological Society
... annealing program to predict permeabilities of lateral profile A, and concluded that variogram, mean and standard deviation are required but not sufficient...
1996
Particle-size Distribution in Nearshore Environments
D. L. Inman , T. K. Chamberlain
Journal of Sedimentary Research (SEPM)
..., median diameter, standard deviation measure, and skewness measure. The findings and techniques from the detailed studied area have been used with success...
1953
Grain Orientation in Beach Sands: A Possible Means for Predicting Reservoir Trend
R. H. Nanz
Journal of Sedimentary Research (SEPM)
... is estimated by standard deviation, and statistical significance is evaluated by a variance-ratio test. Since the true three-dimensional fabric...
1955
ABSTRACT: Reconstruction of Random Fluvial Topography from Preserved Stratification, by Chris Paola, Leon Borgman; #91003 (1990).
Search and Discovery.com
1990
Cross-Bedding Directions in Upper Triassic Sandstones of Northeastern New Mexico
Charles J. Cazeau
AAPG Bulletin
... octant is 11, and the standard deviation is 6. Octants having a number equal to or greater than the mean plus one standard deviation (17) are considered...
1960
Quantitative Study of Athleta Petrosa Stock in Eocene of Texas: ABSTRACT
Peter U. Rodda, John W. Dietrich, W. L. Fisher
AAPG Bulletin
...) of the parameters of each individual and for the calculation of mean and standard deviation of each parameter and combination by localities. More than half...
1962
The Surf-Break: Key to Paleogeography?: ABSTRACT
William F. Tanner
AAPG Bulletin
... that it does not appreciably affect the standard deviation. The inflection, or "break," which results from surf action may not be an absolute indicator...
1965
Statistical Properties of Dunes Generated by Undirectional Water Currents: ABSTRACT
Carl F. Nordin, Jr., James K. Culbertson
AAPG Bulletin
... of the model are simple linear functions of the water discharge per unit width of channel. One of the parameters, the standard deviation of the bed elevation...
1967
Soft-Sediment Faults as Indicators of Paleoslope Orientation: ABSTRACT
Alan Thomson
AAPG Bulletin
... as indicated by flute casts. The standard deviation is 15°. Hence, the faults generally parallel paleoslope contours. Of hundreds of faults examined, more...
1969
Importance of Tidal-Inlet Sedimentation in Barrier-Island Systems: ABSTRACT
John B. Byrnes, Donald J. Colquhoun, Jack W. Pierce
AAPG Bulletin
... techniques indicate that tidal-inlet sediments are distinct. Standard deviation versus mean plots allows the best separation of fields...
1970
Water Content, Void Ratio, and Specific Gravity Calculable from Bulk Density Measurements of Cohesive Marine Sediments: ABSTRACT
Adrian F. Richards, Andrew Parker
AAPG Bulletin
..., and the range of bulk densities from 1.25 g/cm3 to 1.95 g/cm3. Using this equation, the water content can be calculated, with a standard deviation of 2.3...
1971