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The AAPG/Datapages Combined Publications Database

Showing 800 Results. Searched 196,209 documents.

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Ascending

Deformational Structures in Brazilian Coastal Dunes

Edwin D. Mckee, Joao Jose Bigarella

Journal of Sedimentary Research (SEPM)

... to those determined for 13 samples from the adjoining beach, which was the source for the dunes. Skewness of the dune sands was largely negative, i.e....

1972

Heavy Mineral Concentrating Processes and Density/Shape/Size Equilibria in the Marine and Coastal Dune Sands of the Apalachicola, Florida, Region

Frank W. Stapor, Jr.

Journal of Sedimentary Research (SEPM)

... and the lack of extreme skewness and kurtosis oment measures require that these mineral size populations be considered Gaussian, or normal. It should...

1973

Assessment of a Marcellus Shale Prospect Using Seismic, Microseismic, and Completions Data

Scott Singleton, Mark Suda

GCAGS Transactions

... includes central tendency or location (mean, median, mode), dispersion (variance, standard deviation), and shape (skewness, kurtosis). Such a summary enables...

2012

The Bathymetry and Sedimentation of Cape San Blas Shoal and Shelf Off St. Joseph Spit, Florida

Donald K. Stauble , Detlef A. Warnke

Journal of Sedimentary Research (SEPM)

... and Margolis (1969). Raw weights, weight percent, cumulative weight percents, moment measures of mean, standard deviation, skewness, and kurtosis...

1974

Resistivity of Brine-Saturated Sands in Relation to Pore Geometry

W. O. Winsauer , H. M. Shearin, Jr. , P. H. Masson , M. Williams

AAPG Bulletin

..., degree of sorting, and skewness. The determination of the size frequency distribution curve involved the disaggregation of the consolidated sandstone...

1952

Response and Recovery of an Estuary Following a River Flood

Maynard M. Nichols

Journal of Sedimentary Research (SEPM)

... a slight increase in mean particle size from 6.8 µM to 9.9 µM and a change in skewness from negative to positive as the main surge passed through...

1977

The Post Glacial Evolution of the Minas Basin, N.S. A Sedimentological Interpretation

Carl Leonetto Amos

Journal of Sedimentary Research (SEPM)

... are approximately equivalent, but there is generally a slight positive skewness, typical of quiet water sedimentation. The unit is identified...

1978

A Probabilistic Model of Oil and Gas Discovery

G. M. Kaufman , Y. Balcer , D. Kruyt

AAPG Special Volumes

...) has argued that stable probability laws are a more appropriate representation. Though having the virtue of skewness and very fat right tails, stable...

1975

Manganese-Nodule Bedforms and Thermohaline Density Flows in a Deep-Sea Valley on Carnegie Ridge, Panama Basin

Peter Lonsdale

Journal of Sedimentary Research (SEPM)

... as bedload. By contrast, the nodules packed in adjacent cobblestone pavements (e.g., Fig. 6E) have size distributions with strong positive skewness; more...

1980

Sequential Stage Development of Crescentic Bars: Hahoterim Beach, Southeastern Mediterranean

Victor Goldsmith, Dan Bowman, Kevin Kiley

Journal of Sedimentary Research (SEPM)

... may also result from symmetry of the outer bar system coincident with skewness of the inner system (Fig. 13). Similar relationships were described...

1982

Crestal Overtop and Washover Sedimentation on a Fringing Sandy Gravel Barrier Coast, Carnsore Point, Southeast Ireland

Julian D. Orford, R. W. G. Carter

Journal of Sedimentary Research (SEPM)

... of sediment size, sorting, and skewness shows two coarsening-upward sequences, topped by openwork pebble bands. The ramp structure is completed by a distinctive...

1982

Sedimentology of Fault-Scarp-Derived Colluvium from the 1983 Borah Peak Rupture, Central Idaho

James P. McCalpin , Witold Zuchiewicz, L. C. Allen Jones

Journal of Sedimentary Research (SEPM)

...) to strongly coarse-skewed. These sorting and skewness values are typical of alluvial fan sediments (Blissenbach 1954; Bull 1964) and emphasize...

1993

Sediments of the Baltic Sea: Part 4. Near-Shore Sediments--Hemipelagic Deposits

Stina Gripenberg

AAPG Special Volumes

... collected at Stations F64 and F79. Q1, first quartile; M, median; Q3, third quartile; So, coefficient of sorting; Sk, skewness. Abscissas represent...

1939

Bed-load Sorting in an Alluvial River

Jesper Bartholdy, Jorgen Kisling-Moller

Journal of Sedimentary Research (SEPM)

... 0.84 and skewness of -0.28. Transport is not a function of dynamics alone but also of availability of sediment and thereby of earlier flow events, so...

1996

Is Scaling in Turbidite Deposition Consistent with Forcing by Earthquakes?

P. D. Beattie , W. B. Dade

Journal of Sedimentary Research (SEPM)

..._Page 913------------------------ events that result in the marked positive skewness of both the power-law and log-normal distributions. A similar...

1996

Facies and Evolution of the Modern Brazos Delta, Texas: Wave Versus Flood Influence

Antonio B. Rodriguez, Michael D. Hamilton, John B. Anderson

Journal of Sedimentary Research (SEPM)

... crest sands are the coarsest sands in the region (2.5 to 3.0 phi; Fig. 11B). They are moderately sorted with negative skewness values due to shell...

2000

Conditioning a Process-Based Model of Sedimentary Architecture to Well Data

Derek Karssenberg , Torbjorn E. Tornqvist , John S. Bridge

Journal of Sedimentary Research (SEPM)

...) Compute sample statistics (e.g., mean, variance, skewness, channel-belt connectedness ratio, volume of channel belt deposits) from the N well...

2001

Assessing Textural Variation in Laminated Sands Using Digital Image Analysis of Thin Sections: RESEARCH METHODS

Elmer H. van den Berg, Victor F. Bense, Wolfgang Schlager

Journal of Sedimentary Research (SEPM)

..., skewness, and kurtosis of the parameters were not related to any of the other parameters, and for this reason were left out of the factor analysis...

2003

Experimental Modeling of the Spatial Distribution of Grain Size Developed in a Fill-and-Spill Mini-Basin Setting

Rufus L. Brunt, William D. McAffrey, Benjamin C. Kneller

Journal of Sedimentary Research (SEPM)

... of systematic vertical trends in mean grain size, sorting (skewness), and sand-to-shale ratio in both the upstream and downstream basins. AL-JA'AIDI, O.S....

2004

Development and Preservation of a Mid-Holocene Tidal-Channel Network Offshore the Western Netherlands

Ruben Rieu, Sytze van Heteren, Ad J.F. van der Spek, Poppe L. De Boer

Journal of Sedimentary Research (SEPM)

..., and its lag-like features (negative skewness and shell abundance). Note that the active layer is very thin. During the late Atlantic and early...

2005

Carbonate Sediment Drifts in Northern Straits of Florida

Henry T. Mullins , A. Conrad Neumann , R. Jude Wilber , Albert C. Hine , Susan J. Chinburg

AAPG Bulletin

...-size intraclasts. Determination of skewness indicates that the sediments are nearly symmetrical to strongly coarse skewed (Fig. 6). The granules...

1980

Determination of Widths of Meander-Belt Sandstone Reservoirs from Vertical Downhole Data, Mesaverde Group, Piceance Creek Basin, Colorado

John C. Lorenz , David M. Heinze , James A. Clark , Craig A. Searls

AAPG Bulletin

.... It is possible that the skewness of the total data shown in Figure 9 is a function of something other than the cutoff effect as Fig. 11. Model showing...

1985

Estimating Potential for Small Fields in Mature Petroleum Province

John C. Davis , Ted Chang

AAPG Bulletin

..., an average size value, and a skewness measure. We are primarily interested in ß. If ß equals 1, the log gamma distribution is a Pareto distribution...

1989

The practice of graphical fluid-gradient interpretations of formation tester pressure data

Andrew Chen

AAPG Bulletin

..., skewness, or deviation of the data.Scatter plots with linear least square regressions are easily achieved with Microsoft® Office’s Excel spreadsheet...

2014

The Inter-Discipline Approach to Paleoenvironmental Interpretations

B. J. Scull, C. J. Felix, S. B. McCaleb, W. G. Shaw

GCAGS Transactions

..., and the classification of the acritarchs: Stanford Univ. Publ. Geol. Sci., v. 17, 16 pp. Duane, D. B., 1964, Significance of skewness in recent sediments...

1966

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