Academic literature on the topic 'Collapsed paleocave'

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Journal articles on the topic "Collapsed paleocave"

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McMechan, George A., Robert G. Loucks, Paul Mescher, and Xiaoxian Zeng. "Characterization of a coalesced, collapsed paleocave reservoir analog using GPR and well‐core data." GEOPHYSICS 67, no. 4 (2002): 1148–58. http://dx.doi.org/10.1190/1.1500376.

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The three‐dimensional architecture, spatial complexity, and pore‐type distribution are mapped in a near‐surface analog of a coalesced, collapsed paleocave system in the Lower Ordovician Ellenburger Group near the city of Marble Falls in central Texas. The surface area of the site has dimensions of about 350 × 1000 m. The data collected include about 12 km of 50‐MHz ground‐penetrating radar (GPR) data arranged in a grid of orthogonal lines, 29 cores of about 15‐m length, and detailed facies maps of an adjacent quarry face. Electrical property measurements along with detailed core descriptions w
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Reis, João Andrade dos, David Lopes de Castro, Thales Eduardo Silva de Jesus, and Francisco Pinheiro Lima Filho. "Characterization of collapsed paleocave systems using GPR attributes." Journal of Applied Geophysics 103 (April 2014): 43–56. http://dx.doi.org/10.1016/j.jappgeo.2014.01.007.

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McMechan, George A., Robert G. Loucks, Xiaoxian Zeng, and Paul Mescher. "Ground penetrating radar imaging of a collapsed paleocave system in the Ellenburger dolomite, central Texas." Journal of Applied Geophysics 39, no. 1 (1998): 1–10. http://dx.doi.org/10.1016/s0926-9851(98)00004-4.

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Zeng, Hongliu, Guizhong Wang, Xavier Janson, et al. "Characterizing seismic bright spots in deeply buried, Ordovician Paleokarst strata, Central Tabei uplift, Tarim Basin, Western China." GEOPHYSICS 76, no. 4 (2011): B127—B137. http://dx.doi.org/10.1190/1.3581199.

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Anomalous seismic-amplitude bright spots are a common feature in deeply buried (5500 to 6500 m) Ordovician limestone strata in the Central Tabei Uplift area of the Tarim Basin in northwest China. Those anomalies have proven to be useful indicators of reservoir quality. The bright spots as seen on seismic data are tied to high-gamma ray, low-velocity zones in wireline logs, and correspond to clastic cave sediment-fills in the host limestone in core. Synthetic seismic models confirm this relationship between seismic bright spots and cave-sediment fills. A seismic traveltime map of the top Ordovi
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Loucks, Robert G., Paul K. Mescher, and George A. McMechan. "Three-dimensional architecture of a coalesced, collapsed-paleocave system in the Lower Ordovician Ellenburger Group, central Texas." AAPG Bulletin 88, no. 5 (2004): 545–64. http://dx.doi.org/10.1306/12220303072.

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dos Reis Júnior, João Andrade, David Lopes de Castro, Albert Casas, Mahjoub Himi, and Francisco Pinheiro Lima‐Filho. "ERT and GPR survey of collapsed paleocave systems at the western border of the Potiguar Basin in northeast Brazil." Near Surface Geophysics 13, no. 4 (2015): 369–81. http://dx.doi.org/10.3997/1873-0604.2015013.

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LI, Wenke, Yan ZHANG, Baomin ZHANG, Jinsong LI, Jun WANG, and Xiaoyu MA. "Origin, characteristics and significance of collapsed-paleocave systems in Sinian to Permian carbonate strata in Central Sichuan Basin, SW China." Petroleum Exploration and Development 41, no. 5 (2014): 563–73. http://dx.doi.org/10.1016/s1876-3804(14)60067-7.

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Harbi, Hussein, and George A. McMechan. "Conductivity and scattering Q in GPR data: Example from the Ellenburger dolomite, central Texas." GEOPHYSICS 77, no. 4 (2012): H63—H78. http://dx.doi.org/10.1190/geo2011-0337.1.

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Total attenuation ([Formula: see text]) in ground-penetrating radar (GPR) data is a composite of intrinsic and scattering attenuations ([Formula: see text] and [Formula: see text]). For nonmagnetic materials, [Formula: see text] is a combination of the effects of real conductivity and dielectric relaxation. The attenuation for real conductivity [Formula: see text] in the GPR frequency band is a function of frequency while the dielectric relaxation is frequency-independent. These frequency behaviors allow separation of the attenuation types by attributing and fitting the [Formula: see text] dec
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Russel-Houston, Jen, and Ken Gray. "Paleokarst in the Grosmont Formation and reservoir implications, Saleski, Alberta, Canada." Interpretation 2, no. 3 (2014): SF29—SF50. http://dx.doi.org/10.1190/int-2013-0187.1.

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We delineated a bitumen-rich paleokarsted carbonate reservoir of the Upper Devonian (Frasnian) Grosmont Formation with a high-resolution 3D seismic survey tied to core and petrophysical log data from 35 wells within a [Formula: see text] study area in northern Alberta, Canada. There were two laterally continuous karst facies: a solution-enhanced vuggy dolostone that resulted from the carbonate dissolution of body fossils and a stratiform breccia that resulted from the dissolution of interbedded evaporites. Three laterally discontinuous karst facies were identified: sinkhole fills, collapsed pa
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Harbi, Hussein, and George A. McMechan. "Modeling 3D porosity and permeability from GPR data in the Ellenburger Dolomite, central Texas." GEOPHYSICS 76, no. 6 (2011): J35—J46. http://dx.doi.org/10.1190/geo2011-0051.1.

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Three-dimensional porosity and permeability were modeled in an Ellenburger carbonate reservoir analog from 2D crosshole and 3D surface survey ground-penetrating radar (GPR) data. Two-dimensional GPR crosshole velocity tomography, 3D migration of the GPR surface data, and porosity and permeability calibration to GPR attributes results in 3D porosity and permeability predictions that provide a consistent model of the paleocave structures and facies distributions. Picking the maximum instantaneous amplitude of the direct arrival wavelet for velocity tomography reduces uncertainties caused by a lo
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Dissertations / Theses on the topic "Collapsed paleocave"

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Jesus, Thales Eduardo Silva de. "Imageamento digital de paleocavernas colapsadas com georadar." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18821.

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Made available in DSpace on 2015-03-13T17:08:32Z (GMT). No. of bitstreams: 1 ThalesESJ_DISSERT.pdf: 669387 bytes, checksum: 33a20d208304804215535ed96770330f (MD5) Previous issue date: 2012-04-27<br>In this study, the methodological procedures involved in digital imaging of collapsed paleocaves in tufa using GPR are presented. These carbonate deposits occur in the Quixer? region, Cear? State (NE Brazil), on the western border of the Potiguar Basin. Collapsed paleocaves are exposed along a state road, which were selected to this study. We chose a portion of the called Quixer? outcrop for makin
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Robledo, Ardila Pedro Agustín. "Los Paleocolapsos kársticos en las plataformas carbonatadas del Mioceno Superior de Mallorca. Análisis geográfico, genético y evolutivo." Doctoral thesis, Universitat de les Illes Balears, 2005. http://hdl.handle.net/10803/9402.

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El análisis de estructuras paleokársticas ha atraído, en los últimos años, el interés de numerosos investigadores a la información que aportan a la geología aplicada y la paleogeomorfología. Estudios recientes se han centrado en la aplicación de técnicas de exploración del subsuelo debido a la escasez de afloramientos. En la presente Memoria se analizan íntegramente las formas de hundimiento pretéritas que afloran discontinuamente con gran detalle, en los acantilados de las costas meridional (plataforma de Llucmajor) y oriental (plataforma de Santanyí) de Mallorca, a lo largo de más de 75 km d
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Bellian, Jerome Anthony 1971. "Laser-mapping and 3D reconstruction of the Lower Ordovician El Paso Group breccia collapse breccias, Franklin Mountains, Texas." 2009. http://hdl.handle.net/2152/9669.

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The Lower Ordovician El Paso Group is a >400-m-thick carbonate succession exposed in the Franklin Mountains, El Paso, Texas. The El Paso Group contains multiple breccias related to collapsed-paleocave systems. These breccias have been documented as having formed during the top-Lower Ordovician Sauk depositional supersequence lowstand. Evidence presented in this study suggests that cave formation may have been as much as 350 million years younger and related to Laramide oblique right lateral compression. Regardless of the timing of formation, the breccias mapped in this study are of collapsed p
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Conference papers on the topic "Collapsed paleocave"

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Zeng, Hongliu, Charles Kerans, Jerry Lucia, John A., and Katherine G. "3‐D seismic detection of collapsed Paleocave Systems in the Clear Fork/Glorieta Platform, Hobbs Field, New Mexico." In SEG Technical Program Expanded Abstracts 2006. Society of Exploration Geophysicists, 2006. http://dx.doi.org/10.1190/1.2369687.

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DeBone, Kristin, Richard Hanson, Alison Graettinger, and Thomas M. Lehman. "EXPLOSIVE BASALTIC PHREATOMAGMATIC ERUPTIONS, DESTRUCTION OF AN ANCIENT FOREST AND SUBSTRATE COLLAPSE DURING MAAR VOLCANISM RECORDED WITHIN PALEOCENE ALLUVIAL PLAIN STRATA OF THE BLACK PEAKS FORMATION, BIG BEND NATIONAL PARK, WEST TEXAS." In Joint 55th Annual North-Central / 55th Annual South-Central Section Meeting - 2021. Geological Society of America, 2021. http://dx.doi.org/10.1130/abs/2021nc-362915.

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