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The AAPG/Datapages Combined Publications Database
Showing 800 Results. Searched 195,689 documents.
Paleoenvironmental and Diagenetic Reservoir Characterization of the Smackover Formation, Jay Field, West Florida
Deborah. M. Bliefnick, Philip. A. Mariotti
Special Publications of SEPM
... microns. lognormally d i s t r i b u t e d w i t h s l i g h t skewness t o w a r d smaller r a d i i . B . Mercury-based OillBrine Capillary Pressure...
1988
Sediment Types and Formative Processes: Chapter 5: PART 1. LATE QUATENARY CARBONATE SEDIMENTS OF YUCATAN SHELF, MEXICO
Brian W. Logan, James L. Harding, Wayne M. Ahr, Joseph D. Williams, Robert G. Snead
AAPG Special Volumes
... silt- and clay-size pel gic ooze and 15 percent sand-size pelagic skeletons. There was also a tendency toward skewness in the curve toward lower values...
1969
Re-evaluating the Paleogeography of the River-dominated and Wave-influenced Ferron Notom Delta, Southern Central Utah: an Integration of Detailed Facies-architecture and Paleocurrent Analysis
Yangyang Li, Janok P. Bhattacharya, Sumiyyah Ahmed, Daniel Garza
Journal of Sedimentary Research (SEPM)
... of the Turonian Ferron Notom deltaic complex, south-central Utah, U.S.A.: Journal of Sedimentary Research, v. 82, p. 723–746. The concept of “skewness...
2018
Stacked megafans of the Kalahari Basin as archives of paleogeography, river capture, and Cenozoic paleoclimate of southwestern Africa
Georg J. Houben, Stephan Kaufhold, Roy McG Miller, Christoph Lohe, Matthias Hinderer, Meike Noll, Jens Hornung, Reginalda Joseph, Axel Gerdes, Maria Sitnikova, Martin Quinger
Journal of Sedimentary Research (SEPM)
...) skewness, D) sphericity, E) elongation, F) symmetry, and G) convexity of unconsolidated material as a function of drilling depth (cemented material...
2020
A global study of dolomite stoichiometry and cation ordering through the Phanerozoic
Cameron J. Manche, Stephen E. Kaczmarek
Journal of Sedimentary Research (SEPM)
... distribution (Fig. 3A). Cation ordering values, in contrast, exhibit a positively skewed, unimodal distribution (skewness: 0.46; kurtosis: 0.63) (Fig. 3B...
2021
The influence of sediment supply on the stratigraphic evolution of an ancient passive margin deep-marine slope channel system, Windermere Supergroup, British Columbia, Canada
Patricia E. Fraino,, R. William C. Arnott, Lilian Navarro
Journal of Sedimentary Research (SEPM)
... then graphically displayed to obtain values for calculating statistical descriptors, including mean, median, mode, standard deviation, skewness, and kurtosis (cf...
2022
Spatial Variability of Modern Incised Valleys on the French Atlantic Coast: Comparison Between the Charente and the Lay Sèvre Incised Valleys
Eric Chaumillon, Nicolas Weber
Special Publications of SEPM
... of each class (Table 3). The granulometric parameters, mean grain size (MGZ), sorting (So), and skewness (Sk), were calculated using the method...
2006
Introduction to Eolian Deposits
Thomas S. Ahlbrandt, Steven G. Fryberger
AAPG Special Volumes
... compatible, not a reliable eolian indicator. Positive skewness definitely is not a reliable eolian indicator as discussed in the texture section. 4. Burrows...
1982
A Model for Development of Red Sea
James R. Cochran
AAPG Bulletin
... is particularly clear in profile 8, which is also shown in Figure 11. When the magnetic anomaly profile is phase-shifted by 124° to remove the skewness introduced...
1983
Brackish-water ichnological trends in a microtidal barrier island embayment system, Kouchibouguac National Park, New Brunswick, Canada
Tyler E. Hauck, Shahin E. Dashtgard, S. George Pemberton, Murray K. Gingras
PALAIOS
...; Sk 5 skewness; NTS 5 nephelometric turbidity units; [n] 5 number of samples analyzed and species observed. Organisms and burrows were collected...
2009
THE STRATIGRAPHY AND DEPOSITIONAL ENVIRONMENTS OF THE FOX HILLS FORMATION, BOWMAN COUNTY, NORTH DAKOTA
DANIEL J. DALY
Williston Basin Symposium
... skewness throughout the section. Although Stanton (1910) reported Leda (Yoldia) evansi, Tellina scitula, Entalis(l) paupercula...
1991
Seamount Age Estimates from Paleomagnetism and Their Implications for the History of Volcanism on the Pacific Plate
William W. Sager
Circum Pacific Council Publications
... presented an undocumented Early Cretaceous pole from an analysis of marine magnetic lineation skewness (Fig. 5). Larson and Lowrie (1975) and Cox...
1992
Facies, Petrography and Petroleum Potential of Nugget Sandstone (Jurassic), Southwestern Wyoming and Northeastern Utah
M. Dane Picard
Rocky Mountain Association of Geologists
... frosting, pitting of quartz grains positive skewness larger sand grains on set surfaces ventifacts Fossils marine and acquatic fossils absent local rare...
1975
Sedimentology of an Erg to an Erg-Margin Depositional System, the Rush Springs Sandstone of Western Oklahoma, U.S.A.: Implications for Paleowinds Across Northwestern Pangea During the Guadalupian (Middle Permian)
Zachary A. Poland, Alexander R. Simms
Journal of Sedimentary Research (SEPM)
... twice to check for precision. The results from the CILAS were used to calculate mean grain size, standard deviation (grain sorting), and skewness using...
2012
Subsurface Stratigraphic Analysis, Morrow (Pennsylvanian), North Central Texas County, Oklahoma
John W. Benton
Oklahoma City Geological Society
... Skewness and the Kurtosis as defined by Folk (1965). These statistical parameters are shown on Figure 22 for each interval sampled. Unfortunately, only...
1973
Prediction of Permeability in Quartz-Rich Sandstones: Examples from the Norwegian Continental Shelf and the Fontainebleau Sandstone
Olav Walderhaug, Arild Eliassen, Nils Einar Aase
Journal of Sedimentary Research (SEPM)
... for unconsolidated sands where the coefficient of variation and skewness of the grain-size distribution were included as variables in addition to mean grain...
2012
Lithology and Petrography of the Weber Formation, in Utah and Colorado
H. J. Bissell
Utah Geological Association
... place to place, wherein parameters of size-grade distribution, sorting, frosting, pitting, clarity of grains, skewness, mineralogic types, etc. were...
1964
Taphonomy and depositional setting of the Burgess Shale Tulip Beds, Mount Stephen, British Columbia
Lorna J. O'Brien, Jean-Bernard Caron, Robert R. Gaines
PALAIOS
... for normality and skewness. * 5 weakly significant, *** 5 strongly significant. Size distribution Shapiro-Wilk TB - Total TB - Quarry Site TB...
2014
Carbonate Sediment Production, Transport, and Supply To A Coral Cay At Raine Reef, Northern Great Barrier Reef, Australia: A Facies Approach
John L. Dawson, Scott G. Smithers
Journal of Sedimentary Research (SEPM)
..., sorting, skewness) from the entire grain-size distribution, and thus these descriptors are more representative of the sample than graphically derived values...
2014
Synthesis and Applications to Petroleum Geology
C.H. Nelson, T.H. Nilsen
Special Publications of SEPM
... size decrease nearly linearly down-channel (Fig. 11-8). Toward the outer fan sorting improves, skewness becomes less positive, and clay, mica...
1984
Formation of Lateral Patterns In Rock Properties By Dolomitization: Evidence From A Miocene Reaction Front (Bonaire, Netherlands Antilles)
David A. Budd, Whitney D. Mathias
Journal of Sedimentary Research (SEPM)
... variability with both unimodal and bimodal distributions and negative or positive skewness. The limestones and dolomites are geochemically quite different...
2015
New Orleans Geological Society 1973 Spring Field Trip: Geology of the Mississippi-Alabama Coastal Area and Nearshore Zone
Ervin G. Otvos, Jr.
New Orleans Geological Society
...), the island sands exhibit no progressive decrease of grain size in the westward direction. The skewness and good sorting values are not appreciably...
1973
Sedimentological and Ichnological Characterization of the Middle To Upper Devonian Horn River Group, British Columbia, Canada: Insights Into Mudstone Depositional Conditions and Processes Below Storm Wave Base
Korhan Ayranci, Nicholas B. Harris, Tian Dong
Journal of Sedimentary Research (SEPM)
.... Pyrite framboid size distributions of LF1 and LF2. Left) Cross plot of mean vs. standard deviation, and Right) cross plot of mean versus skewness...
2018
Cllmatic Zones Throughout the Ages
George W. Bain
Special Publications of SEPM
... be aggravated if the skewness of the magnetic poles increased analysis magnetic The Permian Hilton 1960 the direction to the magnetic pole only...
1963
Stromatolite Provinces of Hamelin Pool: Physiographic Controls On Stromatolites and Associated Lithofacies
Erica P. Suosaari, R. Pamela Reid, Amanda M. Oehlert, Phillip E. Playford, Carl K. Steffensen, Miriam S. Andres, Gregory V. Suosaari, Gary R. Milano, Gregor P. Eberli
Journal of Sedimentary Research (SEPM)
.... 2017). The statistical software package GRADISTAT (Blott and Pye 2001) was used to calculate mean grain size, sorting, and skewness using...
2019