Sorting of Canadian River, Oklahoma, Sands

William F. Tanner, Paula Mallams

Journal of Sedimentary Research (SEPM)

... sizes. The highest symmetry appeared in a curve with skewness of 0.956. The F:C ratio was 1.5. Keller (1945) reported a ratio for 27 beaches of 1.1...

Color Variations within Glacial Till, East-central North Dakota--A Preliminary Investigation

T. E. Kelly, Claud H. Baker, Jr.

Journal of Sedimentary Research (SEPM)

... deviation show a greater difference between the two tills than do skewness and kurtosis. There is a distinct difference in number and type of pebbles...

Multigroup Discrimination of River, Beach, and Dune Sands Using Roundness Statistics

Basanta K. Sahu

Journal of Sedimentary Research (SEPM)

... deviation and roundness-skewness, which affect about 99.37 percent of he total discrimination, whereas the second discriminant function, inclined...

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...

Abstract: Challenges of Wildcat Risk Assessment in Turbidite Systems, Deepwater Gulf of Mexico, by D. C. Zweidler; #90923 (1999)

Search and Discovery.com

Sorting of Sediments in the Light of Fluid Mechanics

Douglas L. Inman

Journal of Sedimentary Research (SEPM)

... exists between the sorting, skewness and median diameters of sediment samples. Investigation of the fluid mechanic principles involved...

Abstract: Beach Sedimentology of Mustang and Padre Islands: Time-Series Approach, by Richard A. Davis, Jr.; #90975 (1976).

Search and Discovery.com

Abstracts of Theses: History and Bottom Sediments of Stanwell-Fletcher Lake, Somerset Island, N.W.T.

Coakley, J. P.

CSPG Bulletin

... are unlaminated, fine-grained deposits oxidized to a reddish-brown colour at the surface. Poor sorting and positive skewness are the rule even...

Abstract: Factors Influencing Sediment Distributions and Patterns on Shallow, High-Energy Insular Platform, Northern Channel Islands, California, by Peter C. Day; #90968 (1977).

Search and Discovery.com

Testing Graphical Methods of Grain-Size Analysis of Sandstones and Siltstones

R. A. Cadigan

Journal of Sedimentary Research (SEPM)

... rise of probability paper and phi units to determine the phi mean, standard deviation, a skewness coefficient, and a kurtosis coefficient. He also sugg...

New Methods of Identifying Sedimentary Environments

Francis P. Shepard

Journal of Sedimentary Research (SEPM)

... of median diameter and measures of sorting and skewness, so that these factors could be related to environments. 7. Relating of sand-silt-clay percentages...

Size Distributions of Zircon Grains in Some Samples of the Lower Beaumont Clay

John J. W. Rogers, William F. Powell

Journal of Sedimentary Research (SEPM)

..., such as zircon, tourmaline, and rutile. The zircon grains are well sorted, and their size distribution exhibits no apparent skewness. The study indicates...

Sediment Texture and Composition Changes Along the Southwest Louisiana Coast: Implications for Sediment Supply

Matthew J. Taylor , Mark R. Byrnes , Randolph A. McBride

GCAGS Transactions

..., sorting (standard deviation), skewness, and kurtosis were calculated for each sample using the method of moment statistics. In some cases, a fine-grained...

Abstract: Longshore Variation of Beach Sand in Relation to Littoral Drift Direction along the Kuala Terengganu Coast

Rosnan Yaakob, M. L. Hussein, A. Tajuddin

Geological Society of Malaysia (GSM)

... and skewness values show a spatial and temporal variation throughout the entire study area. The mean grain size generally decreases along the direction...

ABSTRACT: Roller Micrometer Analysis of Grain Size and Shape Sorting Within Sand Laminae from Lacustrine Barrier Islands, by James A. Harrell and Robert B. Braun; #91038 (2010)

Search and Discovery.com

Transformation of Arithmetic and Phi Size-Distribution Moments: NOTES

Basanta K. Sahu

Journal of Sedimentary Research (SEPM)

... 2) are known, the phi-skewness and phi-kurtosis can be obtained easily by the use of eq. 18 and 19 and by the known fact that for phi-normal...

Triangular Presentation of Textural Data in the Interpretation of Depositional Environments

L. Olayinka Asseez

Journal of Sedimentary Research (SEPM)

... that, in addition to certain textural parameters such as skewness and kurtosis, the use of certain raw sieve data can be meaningfully applied...

Development of Soil on the Lunar Surface

John F. Lindsay

Journal of Sedimentary Research (SEPM)

... distribution is increased to about 2. Synchronously the graphic skewness of the soil approaches zero and the graphic kurtosis probably decreases...

Sampling Surficial Fluvial Gravels: The Precision of Size Distribution Percentile Estimates

Stephen Rice , Michael Church

Journal of Sedimentary Research (SEPM)

... approximated in the case of the Mamquam. This may reflect the greater skewness of the Mamquam sample. In general the normal model clearly yields...

Correlation of Grain-Size Distribution and Mineralogy with Depositional Environment in the Dakota Formation (Cretaceous) of the San Juan Basin, New Mexico and Colorado: ABSTRACT

Don E. Owen

AAPG Bulletin

... (beach deposit) and gradually decreases in offshore sandstones above the beach sandstone. The change in skewness from coarse in the beach sandstone...

Sedimentologic Analysis of Tongue River and Sentinel Butte Formations (Paleocene), Western North Dakota: ABSTRACT

Chester F. Royse, Jr.

AAPG Bulletin

... and skewness are environmentally sensitive parti le-size statistics. CM patterns illustrate the fluvial origin of these Paleocene deposits and are used...

An Empirical Determination of the Minimum Number of Measurements to Estimate the Mean Random Vitrinite Reflectance of Disseminated Organic Matter, by M. Pawlewicz and C. Barker; #90986 (1994).

Search and Discovery.com

Megascale Variability of Sediments on United States Atlantic Continental Shelf and Slope--Multivariate Study: ABSTRACT

F. C. Krecow, Jay E. Leonard

AAPG Bulletin

... the relative usefulness of these statistical strategies. The data include textural information on mean grain size, sorting, skewness, and various...

Abstract: LOGCAL: A New Tool to Analyze the Geophysical Logs, by S. Peng and A. H. Coogan; #90954 (1995).

Search and Discovery.com

Abstract: Hydrologic Differences Arising from Source Material Differences Between Southwestern Louisiana Aquifers and Their Age Equivalents in Southeastern Louisiana, by Douglas Carlson and Riley Milner; #90032 (2004)

Search and Discovery.com