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The AAPG/Datapages Combined Publications Database
Showing 1,739 Results. Searched 200,599 documents.
First Record of Bird Tracks in the Late Cretaceous (Cenomanian) of Tunisia
Michela Contessi, Federico Fanti
PALAIOS
... Early Jurassic tracks to this genus. Gruipeda and Pullornipes are nearly symmetric tracks, characterized by wide divarication angles (both 115u...
2012
Deep Permeable Strata Geothermal Energy (DPSGE): Giant Heat Reserves within Deep Sedimentary Basins: Untapped Energy Potential in Permian Basin Strata Revisited
Douglas B. Swift, Richard J. Erdlac, Jr.
West Texas Geological Society
... represents the projected decrease of natural gas from 1972, if production decrease was mathematically symmetric to the production increase prior...
2004
Phosphate-Related Artifacts In Carbonate Mineralization Experiments
Kimberley L. Gallagher, Olivier Braissant, Tristan J. Kading, Christophe Dupraz, Pieter T. Visscher
Journal of Sedimentary Research (SEPM)
...) analysis was performed on a Scintag model XDS 1000, and peak deconvolution was performed using a Person VII algorithm with non-symmetric peaks allowed...
2013
Impact-Induced Sediment Deposition on an Offshore, Mud-Substrate Continental Shelf, Cretaceous–Paleogene Boundary, Brazos River, Texas, U.S.A.
Thomas E. Yancey, Chengjie Liu
Journal of Sedimentary Research (SEPM)
... from hummocky cross-bedding to climbing-ripple migration to more symmetric ripples at the top. This interval of changing bedforms has an upward-fining...
2013
Diagenetic alteration of Triassic coral from the aragonite Konservat-Lagerstätte in Alakir Çay, Turkey: Implications for geochemical measurements
Katarzyna Frankowiak, Maciej Mazur, Anne M. Gothmann, Jarosław Stolarski
PALAIOS
... and rotational and translational lattice modes. For aragonite, the most intense peak appears at 1085 cm21, which is assigned to the symmetric stretching mode...
2013
Significance of Silicified Carbonate Rocks Near the Devonian-Mississippian Boundary Ouachita Mountains, Oklahoma
Carolyn Murgatroyd
Oklahoma City Geological Society
... symmetric oscillation ripples. Cavities filled geopetally with dark sediments and some lined with quartzine, suggesting formation by solution of evaporites...
1982
Experimental Investigation On Self-Channelized Erosive Gravity Currents
Pierre Weill, Eric Lajeunesse, Olivier Devauchelle, François Métiver, Angela Limare, Benoît Chauveau, Dominique Mouazé
Journal of Sedimentary Research (SEPM)
... that their shape was not influenced by the boundary conditions. The averaged cross sections exhibit a symmetric V shape with steep banks (Fig. 10). Fig. 10. Steady...
2014
Shelf Sandstones
Dudley D. Rice, Donald L. Gautier
Special Publications of SEPM
... nodules prior to Shannon Sand influx. s hal es 7-6. Typical coarsening-upward sequence of Shannon Sandstone Member (after Harms et al., 1982). Flow...
1983
An Examination of Froude-Supercritical Flows and Cyclic Steps On A Subaqueous Lacustrine Delta, Lake Chelan, Washington, U.S.A.
Aaron T. Fricke, Benjamin A. Sheets, Charles A. Nittrouer, Mead A. Allison, Andrea S. Ogston
Journal of Sedimentary Research (SEPM)
... are able to migrate both upstream and downstream, the former is more commonly observed. Upstream-migrating antidunes are generally symmetric...
2015
Interpreting Paleoenergy Levels from Sediment Deposited on Ancient Wave-Dominated Shelves
H. Edward Clifton
CSPG Special Publications
.... A kozep es fiatal alpi tektonikai fazisok szerepe Magyarorszag foldani fejlodes-menettgben. Magyar Allami Foldtani Intezet Evi Jel. az 1980 (Annual...
1986
CONSTRUCTIONAL AND DESTRUCTIONAL PATTERNSVOID CLASSIFICATION OF RHODOLITHS FROM GIGLIO ISLAND, ITALY
FLORIAN NITSCH, JAMES H. NEBELSICK, DAVIDE BASSI
PALAIOS
... (or biological disturbance) increases at a level sufficient to enable overturning-events (Basso 1998), while more symmetric rhodoliths are more easily turned...
2015
Geostatistical Modeling of the Spaces of Local, Spatial, and Response Uncertainty for Continuous Petrophysical Properties
P. Goovaerts
AAPG Special Volumes
... of symmetric p-probability intervals can be constructed by identifying the lower and upper bounds with the (1 p)/2 and (1 + p)/2 quantiles of F(u;z(n...
2006
Numerical Upcaling of Coupled Flow and Geomechanics in Highly Heterogeneous Porous Media
Daegil Yang, George J. Moridis, Thomas A. Blasingame
Unconventional Resources Technology Conference (URTEC)
... equations have an additional equation that makes the upscaled permeability as symmetric tensor. The added equation satisfies . Eq. 21 can be solved using...
2013
A Regional Gravity Survey of the Sanpete-Sevier Valleys and Adjacent Areas in Utah
Robert P. Brown, Kenneth L. Cook
Utah Geological Association
... Plateau would be essentially symmetric in an east-west profile without the disturbing mass, the half-width at half-maximum is 7800 feet. If the anomalous...
1982
Accelerating Shale Asset Success Through Applied Reservoir Understanding
Ronald G. Dusterhoft, Jeff Dahl, John S. Spaid, Buddy McDaniel, Bill Grieser, Bill Johnson
Unconventional Resources Technology Conference (URTEC)
... basic assumptions, such as symmetric bi-wing fractures; however, when one considers the complex environment within which these horizontal wells...
2014
The Effect of A Pre-Deposited Mobile Substrate On Terminal-Fan Evolution and Channel Organization: Tank Experiments
Emily Chatmas, Wonsuck Kim, Gary Kocurek
Journal of Sedimentary Research (SEPM)
... symmetric (Fig. 7D). Only Run 5 developed a fan that had a larger maximum down-basin length as compared to maximum cross-basin width (average ΦF = 0.8...
2017
Tidal Origin of a Mississippian Oolite on the West Virginia Dome: Chapter 11
Richard Smosna, Bryan Koehler
AAPG Special Volumes
... a height of around 1 cm and a wave length of 4-6 cm (Figure 9D). The symmetric shape and low ripple index (4-6) distinguish them as wave ripples...
1993
Helical crustacean burrows: Gyrolithes ichnofabrics from the Pliocene of Lepe (Huelva, SW Spain)
Fernando Muñiz, Zain Belaústegui
PALAIOS
...) microbial farming; (6) exploitation of food resources; (7) providing pore-water exchange; (8) symmetric or asymmetric producers (unequal handedness); (9...
2019
Late Albian Blackleaf and Thermopolis-Muddy Sequence in Southwestern Montana and Correlation with Time-Equivalent Strata in West-Central Montana
T.S. Dyman, K.W. Porter, R.G. Tysdal, W.A. Cobban, J.D. Obradovich
Montana Geological Society
... deposits from tens to hundreds of feet in length. The megaripples are symmetric and have wave-lengths exceeding one foot (0.3 m...
2000
Stratigraphy of the Fluvial-To-Marine Transition Zone Associated With A Forced-Regressive Compound Incised-Valley System In the Turonian Ferron Notom Delta, Utah, U.S.A.
Benjamin H. Richards, Janok P. Bhattacharya
Journal of Sedimentary Research (SEPM)
... 14-1. C) Bioturbation in lower shoreface at section 13-7. D) Thin, symmetric wave-rippled very fine-grained sandstone in prodelta at section 13-7...
2018
Assessing Intra-Bar Variations in Grain Roughness Using Close-Range Photogrammetry
Jane Groom, Stéphane Bertin, Heide Friedrich
Journal of Sedimentary Research (SEPM)
...). Stereo-matching was completed on the rectified images using Gimel'farb's (2002) symmetric dynamic programming stereo algorithm (SDPS) to produce point...
2018
Acoustic Properties of Sediment on the Southern Tonga Platform as Determined from Seismic Sonobuoy Studies
Jonathan R. Childs
Circum Pacific Council Publications
.... In this representation, the source is stationary and the sonobuoy position is varia ble. In practice the reverse is true, but the two cases are symmetric...
1985
Sedimentation of the Pico Formation in the Ventura Quadrangle, California
Lon D. Cartwright, Jr.
AAPG Bulletin
... detritus and later picked it up and shifted it elsewhere. Symmetric and asymmetric ripple marks, formed by waves and currents, are of common occurrence...
1928
On the Formation of the Vitiaz Trench Lineament and North Fiji Basin
Thomas M. Brocher
Circum Pacific Council Publications
...). The western end of the trough is 800 m shallower, more symmetric and narrow, and more deformed than the eastern end (Figures 11 and 1 2 ) , Sediments...
1985
Paleoecological implications of large-sized wild boar tracks recorded during the Last Interglacial (MIS 5) at Huelva (SW Spain)
Carlos Neto De Carvalho, Fernando Muñiz, Zain Belaústegui, João Belo, Paula Gómez, Antonio Toscano, Mário Cachão, Pedro P. Cunha, Francisco Ruiz, Luis Miguel Cáceres, Joaquín Rodriguez-Vidal, Geraldine Finlayson, Stewart Finlayson, Francisco Giles Guzman, Clive Finlayson
PALAIOS
..., paraxonic, and sub-symmetrical tracks that are longer than wide, with a general trapezoidal shape; digits III and IV symmetric, with rounded...
2020