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 3,221 Results. Searched 201,044 documents.
Geostatistical Approach in Coal Resource Estimation: ABSTRACT
J. H. Fang, T. H. Starks, Joe Mattern
AAPG Bulletin
... the intrinsic random functions of order k, using spherical covariance models. While the intrinsic random function approach is usually considered...
1980
Recent Armored Mudballs Associated with a Mudflow, Egan Range, Eastern Nevada: ABSTRACT
Ronald R. McDowell, Jay E. Valusek
AAPG Bulletin
... in diameter and were spherical to ovoid with alternating internal layers of clay and limestone clasts (lithologically identical to stream gravels). AMBs...
1985
Abstract: Kidd Copper Tailing Site Reclamation New Meaning; #90224 (2015)
Loreen Michele Sherman
Search and Discovery.com
... are recorded in its history from 1960-~1970. Spherical grains, water-laid strata and turbulent flows discussed in this presentation capture new ideas...
2015
Abstract: Uniformitarianism and Global Tectonics, by Eli A. Silver; #90961 (1978).
Search and Discovery.com
1978
Support of the Gibbs Formulae: REPLY
Paul D. Komar
Journal of Sedimentary Research (SEPM)
... (1973) approach in calculating settling velocities of spherical grains. I generally use that approach, although not Warg's exact program, whenever I...
1982
ABSTRACT: Petrology of Mississippian Carbonate Eolianites and Associated Facies: Ste. Genevieve Limestone of Indiana, by J. R. Dodd, T. W. Brown, C. D. Harris, K. W. Leonard, C. W. Zuppann; #91003 (1990).
Search and Discovery.com
1990
Abstract: Glendonite Formation in Assocation with Methane Oxidation in the Middle Permian Wandrawandian Siltstone, Southern Sydney Basin, Australia, by Stephanie G. Thomas; #90039 (2005)
Search and Discovery.com
2005
Abstract: Interactive 3D Potential Field Modelling and Visualization - New Generation Software; #90255 (2017)
Hans-Juergen Goetze, Michael R. Alvers, Liliana Barrio-Alvers, Christian Plonka, Bernd Lahmeyer, Sabine Schmidt
Search and Discovery.com
.... This technique is user-friendly because it is highly interactive, ideally real-time and topology conserving and can be used for both flat and spherical models...
2017
Abstract: Redox Conditions During Early Diagenesis Inferred from the Mode and Occurrence of Pyrite in the Upper Ordovician Point Pleasant Limestone of Southwestern Pennsylvania and Northern West Virginia, Appalachian Basin, USA; #90283 (2016)
David R. Blood, Steve Schlaegle, Christopher M. Hefferan, Mariah Murph, Alexa Vazquez
Search and Discovery.com
... and pore water in ancient and recent sediments. Framboids, spherical aggregates of microcrystallites, form at or just below the sulfide chemocline...
2016
Abstract: Physical Modeling for Azimuthal AVO Over a Simulated Fractured Medium; #90174 (2014)
Faranak Mahmoudian, Gary F. Margrave, and Joe Wong
Search and Discovery.com
... to the spherical-wave Zoeppritz predictions (the 90⁰ azimuth is along the fracture plane, and is considered to be the nearly-isotropic plane...
2014
Finite Difference Modelling: Part IV
Lasse Amundsen, Ørjan Pedersen, Martin Landrø
GEO ExPro Magazine
... velocity, the wave originating at the source expands in a series of spherical wavefronts centred on that source; a consequence of Fermat’s principle...
2019
Diverse Stromatolite Forms from the Upper Devonian of Saskatchewan
W. L. Kaufmann
CSPG Bulletin
... nomenclature proposed by Logan et al. (1962 & 1964). Structures present included (1) spherical structures (SS); (2) composite forms of spherical...
1964
Geothermal Step in the Oil-Gas Regions of Azerbaydzhan
A. B. Tsaturyants, T. A. Gadzhieva
Petroleum Geology: A Digest of Russian Literature
.... It is well known that within a uniform spherical shell the temperature changes according to the law of the hyperbola (1): (1) t x = t 1 - t 1...
1960
Computed Sediment Grain Surface Areas
George Shumway, Kim Igelman
Journal of Sedimentary Research (SEPM)
... computed for 109 natural sediment samples ranging from sands to clays. This was done by assuming all particles to be spherical and summing the areas...
1960
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)
... of paleoearthquakes on the American Fork segment, Wasatch fault zone, Utah: Journal of Geophysical Research, v. 94, p. 1622-1630. FORMAN, S.L., NELSON, A.R....
1993
Geostatistical Simulation of Facies and Petrophysical Properties for Heterogeneity Modeling in A Tidal Depositional Environment: A Case Study From Upper Shale Member in A Southern Iraqi Oil Field
Watheq J. Al-Mudhafar
Unconventional Resources Technology Conference (URTEC)
... (solve the kriging equation). It was investigated that the spherical modeling is the best fit for all the indicator variograms for all the lithotypes...
2021
Abstract: Use of petrographic investigations in prediction of combustion behaviour of inertinite rich coal and char and flyash formation
A. Kumar Varma, M. Kumar, V. Kumar Saxena, A. Sarkar
The Society for Organic Petrology (TSOP)
... which they have been prepared. SEM (scanning electron microscope) analyses of the coarsest fraction of the fly ash reveal that both spherical...
2008
"Cave Pearls" in a Cave Near Columbia, Missouri
W. D. Keller
Journal of Sedimentary Research (SEPM)
...) most of which show in thin section a fibrous radial structure. They are spherical to elliptical in shape, in FOOTNOTE 1. Hess, F. L., Oolites or cave...
1937
Available Methods for the Analysis of Vectorial Data: DISCUSSION
Ronald Green
Journal of Sedimentary Research (SEPM)
... to scepticism. However, it should be pointed out that Fisher's method is for a vector population in which the directions satisfy a spherical normal...
1964
Organoporosity versus Mineral Matrix Porosity in the Calculation of Reserves in Shale Reservoirs
G. B. Asquith
West Texas Geological Society
... is correct? The Maxwell-Garnett Equation which was designed model large spherical pores in bedded in finer spherical matrix pores (i.e. a vuggy...
2013
ABSTRACT: VARIATION IN MERCURY EMISSIONS FROM ALBERTA POWER PLANTS OVER THIRTY-SIX WEEKS PERIOD
F. Goodarzi, J. Reyes, H. Sanei, K. Abraham
The Society for Organic Petrology (TSOP)
... the spherical reactive chars that have web-like interconnected lattices. The majority of the reactive char consists of large porous subangular and spherical...
2006
"Quick Preparation of Slides of Well-Oriented Clay Minerals for X-Ray Diffraction Analyses," A REPLY
Nenad Spoljaric
Journal of Sedimentary Research (SEPM)
... to herein is the 'equivalent spherical diameter' of the particles. For diameters smaller than 20 microns this refers to spheres having the same settling...
1972
Phosphates
Joann E. Welton
AAPG Special Volumes
...): (Jurassic) Depth of Sample: 10,538.5 feet Spherical clusters and elongate rods (F) of the authigenic rare-earth phosphate mineral, florencite: In Figure...
1984
2008