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The AAPG/Datapages Combined Publications Database
Showing 800 Results. Searched 195,550 documents.
Mercury and Bed Sediment in the Ottawa River, Canada
Brian R. Rust, Dennis G. Waslenchuk
Journal of Sedimentary Research (SEPM)
...). Grain Size Grain size distributions determined by sieve and pipette analysis were expressed as graphic mean size, standard deviation and skewness...
1976
Textural and Mineralogical Characteristics of the Surficial Sediments of Kane Basin
Joseph H. Kravitz
Journal of Sedimentary Research (SEPM)
..., standard deviation, skewness, and kurtosis, were determined by moment computation. Correlation coefficients were used to compare depth and standard...
1976
Carbonate Facies and Sedimentation of Patch Reefs off Bermuda
Clifton F. Jordan, Jr.
AAPG Bulletin
...., 1964, Significance of skewness in recent sediments, western Pamlico Sound, North Carolina: Jour. Sed. Petrology, v. 34, no. 4, p. 864-874. Emery, K...
1973
Surficial Deposits of the Deserts of Syria, Trans-Jordan, Iraq and Western Iran
E. C. DAPPLES
Journal of Sedimentary Research (SEPM)
... irrespective of the kind of rock or the size of the minerals constituting the rock. The phi-quartile skewness (Skq) for limestones hich have been...
1941
Carbonate Sediments in the Capricorn Reef Complex, Great Barrier Reef, Australia
W. R. Maiklem
Journal of Sedimentary Research (SEPM)
... (figs. 4, 6, 8) have been constructed for all samples and four statistical parameters, mean (MZ), dispersion (I), skewness (SkI), and kurtosis (KG...
1970
Plotting Equation for Gaussian Percentiles and a Spreadsheet Program for Generating Probability Plots: RESEARCH METHODS PAPERS
James H. Balsillie, Joseph F. Donoghue, Kenji M. Butler, Jennifer L. Koch
Journal of Sedimentary Research (SEPM)
..., standard deviation, skewness, kurtosis), grain-size distribution diagrams, and frequency and cumulative frequency probability plots. Probability...
2002
The concept of joint saturation and its application
Yunhui Tan, Thomas Johnston, and Terry Engelder
AAPG Bulletin
... the rock, skewness of the joint-spacing histogram decreases from the extreme represented by an exponential distribution. To express joint-spacing...
2014
Sedimentation of Beach Gravels: Examples from South Wales
Brian J. Bluck
Journal of Sedimentary Research (SEPM)
... deviation and skewness are, to a considerable extent, effected by either the removal from, or addition of small coarse modes to large fine. Size frequency...
1967
COMPARISON OF TEXTURES AND STRUCTURES TO DISTINGUISH EOLIAN ENVIRONMENTS, KILLPECKER DUNE FIELD, WYOMING
Thomas S. Ahlbrandt
Rocky Mountain Association of Geologists
... r a i n s i z e downwind i n such a sequence. Skewness and k u r t o s i s values have q u e s t i o n a b l e use, t h e f o r mer being dependent...
1975
Morphology and Sediments of Sand Waves in the St. Lawrence Estuary
David Monahan
Atlantic Geology
... in skewness towards the crest of wave 2. These trends are not strong enough to permit any definite conclusions to be reached. FIG. Strong trends...
1976
Sedimentology of Some Mexican Coastal Lagoons
Fred B. Phleger, Gifford C. Ewing
Tulsa Geological Society
... and there are brine pans and salt flats beyond the head of the lagoon. The dominant type of sediment is fine, well-sorted sand showing little skewness...
1959
Notes on the Mineral Assemblage of the "White Silt" Terraces in the Okanagan Valley, British Columbia
Charles Meyer, Keith Yenne
Journal of Sedimentary Research (SEPM)
... of the thickly bedded material, and to a lesser extent also that of the laminated silt, shows a skewness comparable to that determined for loess but the genetic...
1940
Preface
Parker D. Trask
Special Publications of SEPM
..., and chemical properties of the sediments should be obtained. Such studies, however, would involve subsidiary problems such as causes of sorting, skewness...
1955
Trends of Sedimentation in Giridih Basin, Bihar, India
C. Narasimha Rao
Journal of Sedimentary Research (SEPM)
... skewness (Sk), a rarely used attribute, was determined for both the stages. Even though its full significance is yet to be understood, it certainly...
1957
Mechanical Analysis and Heavy Minerals, Morrison and Cloverly Formations, Southern Big Horn Mountains, Wyoming
Arthur Mirsky
Journal of Sedimentary Research (SEPM)
... skewness and the kurtosis measures, were also analyzed. The graphs of the phi skewness measure show no definable relations within either the Morrison...
1961
Louisiana Cheniers: Settling from High Water
William F. Tanner
GCAGS Transactions
... for a mature dune or a mature beach. The skewness is a borderline value, at best. The kurtosis and the sixth moment measure identify a combination...
1993
Sieve Calibration: NOTES
Dean A. McManus
Journal of Sedimentary Research (SEPM)
... measures due to manufacturing tolerances of the sieves. The range of values was: mean, 0.1d; standard deviation, 0.05 phi-unit; skewness, 0.3 and kurtosis...
1963
Some Remarks on the Phi Notation: NOTES
W. C. Krumbein
Journal of Sedimentary Research (SEPM)
..., phi standard deviation, and phi skewness from cumulative curves drawn on probability paper. Otto's work was extended by Inman (1952) to a convenient...
1964
Transformation of Weight--and Number--Frequencies for Phi-Normal Size Distributions: NOTES
Basanta K. SAHU
Journal of Sedimentary Research (SEPM)
... of phi-skewness increases, the departures from equations 9, 12, and 10 become greater. This is probably the most important cause of the discrepancy...
1965
The Use of Factor Analysis in Determining Depositional Environments from Grain-Size Distributions
J. E. Klovan
Journal of Sedimentary Research (SEPM)
... dealing with ancient sediments. DUANE, D. B., 1964, Significance of skewness in recent sediments, Western Pamlico Sound, North Carolina: Jour. Sedimentary...
1966
Factors Affecting the Lithification of Eolianite and Interpretation of its Environmental Significance in the Coastal Plain of Israel
D. H. Yaalon
Journal of Sedimentary Research (SEPM)
... samples have a coarser central part and tail (negative skewness) and the uncemented particles have a larger central part and tail towards the finer...
1967
Volumetric Histogram for Field Study of Carbonate Sediments: NOTES
Donald E. Hattin
Journal of Sedimentary Research (SEPM)
... is a simple method of ensuring that each student will learn something of such parameters as modal size, sorting, and skewness by examining the sediment-laden...
1968
Granulometer--A Sediment Analyzer Directly Writing Grain Size Distribution Curves: NOTES
Jiri Brezina
Journal of Sedimentary Research (SEPM)
... in volumetric methods). Chappel (1967) shows that the skewing effect criticized by Folk is due, for the most part, to the skewness formula used. Having...
1969
Automatic Grain Size Analyses by Means of Electro-Magnetic Surface Measurements
J. C. Deelman
Journal of Sedimentary Research (SEPM)
... properties (as, for example, quartile measures, median diameter, degree of sorting, sorting coefficient, skewness, geometric standard deviation, etc...
1972
Textural Changes as an Indicator of Sediment Dispersion in the Northeastern Channel Island Passages, California
James S. Booth
Journal of Sedimentary Research (SEPM)
..., as interpreted from skewness and kurtosis values showing mixed populations (Folk and Ward, 1957; F lk, 1966), it is concluded that the vast majority...
1973