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The AAPG/Datapages Combined Publications Database
Showing 1,739 Results. Searched 200,691 documents.
Rapid Growth and Recrystallization of Cave Pearls in an Underground Limestone Mine
Leslie A. Melim, Michael N. Spilde
Journal of Sedimentary Research (SEPM)
... laminations. The pearls from pool 06-02 display mostly symmetric growth with laminated micrite–microspar surrounding the entire pearl and only minor dendrites...
2011
Pliocene Shallow-Water Sediment Gravity Flows at Moss Beach, San Mateo County, California
Thomas J. Wiley, Ellen J. Moore
Pacific Section SEPM
... and cobble conglomerate. Asymmetric and symmetric megaripples are preserved on the tops of several of the granule-conglomerate beds. One set of asymmetric...
1983
HALYSIS HØEG, 1932 IN ORDOVICIAN CARBONATE MOUNDS, TARIM BASIN, NW CHINA
YUEFENG SHEN, FRITZ NEUWEILER
PALAIOS
... are most abundant and the distribution is skewed toward low (,10) tube numbers. FIG. 6.—Branching of tubes in Halysis. A, B) Branching is lateral-symmetric...
2015
Petroleum Systems and Structural Styles in the Santiago Fold and Thrust Belt: A Salt Related Orogenic Belt
Antenor M. Alemán, Robert Marksteiner
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... fision de huellas de apatita y datos sismicos. Este episodio de deformacion compresional es correlacionada con los movimientos de la Fase Quechua de...
1997
Friction- and Inertia-Dominated Effluents In A Lacustrine, River-Dominated Deltaic Succession (Pliocene Upper Valdarno Basin, Italy)
Francesco Fidolini, Massimiliano Ghinassi
Journal of Sedimentary Research (SEPM)
...) symmetric ripple forms commonly highlighted by millimeter mud layers (Facies W1; Fig. 7C, D) are capped by centimeter-thick massive mud (Facies M1...
2016
Franciscan Complex Geology of the Crescent City Area, Northern California
K. R. Aalto, J. M. Murphy
Pacific Section SEPM
... accounts for axially symmetric bedding parallel extension observed in Franciscan melanges and turbidites in the central California Coast Ranges...
1984
Bivalves on the move: the interplay of extrinsic and intrinsic factors on the morphology of the trace fossil Protovirgularia
MarÃa I. López Cabrera, M. Gabriela Mángano, Luis A. Buatois, Eduardo B. Olivero, Christopher G. Maples
PALAIOS
... S include dominantly asymmetric to symmetric ripples, interference ripples, wrinkle marks, and flaser-, wavy-, and lenticular bedding (Hakes 1985...
2019
Application of Raman spectroscopy in comparison between cryptic microbialites of Recent marine caves and Triassic patch reefs
Adriano Guido, Stephen Kershaw, Franco Russo, Domenico Miriello, Adelaide Mastandrea
PALAIOS
... cmÀ1. The main calcite peaks correspond to the symmetric stretching (m1) of the CO3 group at 1092 cmÀ1, asymmetric stretching (m3) at 1437 cmÀ1...
2019
Petrography and Lithology of the Lake Bonneville Sand and Gravel Deposits, Davis County, Utah
Richard S. Kopp
Utah Geological Association
... to −0.10 Symmetric to near symmetric −0.10 to −0.30 Skewed toward the coarse −0.30 to −1.00 Strongly skewed toward the coarse Kurtosis...
1987
Middle Shelf Environment: Chapter 7: PART 1
James L. Wilson, Clif Jordan
AAPG Special Volumes
...) Symmetrical ripples have symmetric profiles and parallel, linear crests. The pattern is like a sheet of corrugated metal. Oscillation ripples are symmetric...
1983
Aquaria-Based Observations of the Ophiuroid Ophiolepis Superba and the Trackways it Produces
Riley C. Morton, Reed A. Myers, Murray K. Gingras, John-Paul Zonneveld
PALAIOS
... subjective synonyms) associated with ophiuroids have been described (Table 1). Ophiuroids orient themselves so they are bilaterally symmetric relative...
2023
The Impact of Pore Size and Kerogen Maturity on the Behavior of Water in Organic Kerogen Nanopores in Shales
Yinan Hu, Deepak Devegowda, Richard F. Sigal
Unconventional Resources Technology Conference (URTEC)
...s in contrast to the more symmetric profiles of the graphene slit pore. This is simply a consequence of the irregular, non-planar structure of the por...
2015
Depth distribution of benthic foraminifera in the middle and deeper sublittoral to uppermost bathyal zones northwest of Okinawa, Japan
Wan Nurzalia Wan Saelan, Johann Hohenegger
Geological Society of Malaysia (GSM)
... composed of very fine sand. Sediments sampled in the southeast of Izena Island (Figure 3) were all poorly sorted. At less than 100m depth, symmetric...
2018
Regressive Stromatolite Reefs and Associated Facies, Middle Goulburn Group (Lower Proterozoic), in Kilohigok Basin, N.W.T.: An Example of Environmental Control of Stromatolite Form
M. P. Cecile, F. H. A. Campbell
CSPG Bulletin
... flow recorded by other stromatolite elongations and associated symmetric ripples, is problematical. Biological factors appear to have been...
1978
Revised Stratigraphy and Correlation of the Neoproterozoic Uinta Mountain Group, Northeastern Utah
Carol M. Dehler, Douglas A. Sprinkel
Utah Geological Association
... and symmetric ripple marks, mud cracks, normal and reverse grading, slump folds, load structures, hummocky cross-stratification (HCS), silica...
2005
Subsurface Wilcox Lignite In West-Central Louisiana
E. J. Coates , C. G. Groat , George F. Hart
GCAGS Transactions
... with abrupt contacts, and symmetric, poorly developed sandstones and shales. The association of this pattern with strike-oriented sandstone maxima suggests...
1980
The Use of Statistical Methods in Effecting Improvements on a Jones Sample Splitter
George H. Otto
Journal of Sedimentary Research (SEPM)
... within a symmetric range of the average value (arithmetic mean) should be predictable. The symmetric range is ordinarily expressed as some multiple...
1937
Polyphase Lararnide Deformation in the Shirley Mountains, South-Central Wyoming Foreland
Steffen G. Bergh, Arthur W. Snoke
Rocky Mountain Association of Geologists
... a composite near-symmetric, NW-SE-trendmg syncline-anticline structure in the southeast. At Lost Creek, near the western closure of the Shuley syncline (Fig...
1992
Mechanisms for Late Paleozoic Synorogenic Subsidence of the Midland and Delaware Basins, Permian Basin, Texas and New Mexico
Kenn-Ming Yang, Steven L. Dorobek
West Texas Geological Society
... basin and shallower, but nearly symmetric across the Midland basin. These results might explain the observed synorogenic profiles of the basins...
1992
Novel Wettability Modifiers for Improved Oil Recovery in Tight Oil Reservoirs
Mingyuan Wang, Gayan A. Abeykoon, Francisco J. Argüelles Vivas, Ryosuke Okuno
Unconventional Resources Technology Conference (URTEC)
... is 3-pentanone (3p), a symmetric ketone that can partition into both oil and brine at reservoir conditions. It can act as a solvent by itself...
2019
Water/Oil Displacement by Spontaneous Imbibition Through Multiscale Imaging and Implication on Wettability in Wolfcamp Shale
Sheng Peng, Yijin Liu, Lucy Tingwei Ko, William Ambrose
Unconventional Resources Technology Conference (URTEC)
... of the heterogeneity of pore structure and/or wettability at that scale. On the other hand, the overall R distribution shows a unimodal and quite symmetric shape...
2019
Variability in Results from Mineralogical and Organic Geochemical Interlaboratory Testing of U. S. Geological Survey Shale Reference Materials
Justin E. Birdwell, Stephen A. Wilson
Unconventional Resources Technology Conference (URTEC)
... distributions in Figure 5 are not symmetric, indicating some data biasing. For comparison to the interlaboratory results, data from the USGS Petroleum...
2019
Simulating the Life of Hydraulically Fractured Wells Using a Fully-Coupled Poroelastic Fracture-Reservoir Simulator
Ripudaman Manchanda, Shuang Zheng, Deepen Gala, Mukul M. Sharma
Unconventional Resources Technology Conference (URTEC)
.... Symmetric fracture propagation should be observed in ideal scenarios, however, minor numerical errors are exacerbated by the stress interference...
2019
Permeability Anisotropy and Heterogeneity of a Sandstone Reservoir Analogue: An Estuarine to Shoreface Depositional System in the Virgelle Member, Milk River Formation, Writing-on-Stone Provincial Park, Southern Alberta
Rudi Meyer, Federico F. Krause
CSPG Bulletin
... appear approximately unimodal, even strongly skewed (asymmetric) distributions can be transformed to be symmetric about the median value...
2006
Analysis of Well Interference in Delaware Basin: A Physics-Based and Data-Driven Approach
Esmail Eltahan, Shayan Tavassoli, Brian Casey, Guinevere McDaid, Emery Goodman
Unconventional Resources Technology Conference (URTEC)
... intact, whereas the right wing can be compromised. In the case of no damage, the right and left wings are assumed to be symmetric with no damage imposed...
2021