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Showing 1 to 8 of 8 for “"Vugs"”.
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Análise numérica da dissolução de meio poroso heterogêneo em escala de plugue
… minerais pode gerar zonas que variam de pequenos vugs a grandes cavernas (carstificação). Nas paredes das fraturas, ela modifica suas aberturas e rugosidade, alterando permeabilidade e resistência da rocha fraturada, impactando no escoamento de fluidos e na resposta mecânica do meio. Com o …
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A study of millerite from Cu-Ni-PGE footwall veins, Sudbury, ON: crystal-chemistry, morphology, & geological implications
… millerite as a hydrothermal precipitate within vugs in carbonate basins, where it develops an acicular morphology, with crystals often exhibiting exaggerated aspect ratios (l:w > 20). The reason for these contrasting morphologies is attributed directly to the genesis of magmatic millerite that …
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Petrography of the Midale subinterval in the Bottineau and Renville counties area, North Dakota
… and lithification, secondary anhydrite filled vugs and fractures and replaced calcite and dolomite.</p> <p>Porosity of the Midale carbonates is of the primary intergranular and intercrystalline types. Primary porosity was formed at the time of deposition of the carbonates and was reduced by …
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Pore-scale simulation frameworks for flow and transport in complex porous media
… effect of heterogeneity such as fractures and vugs on the porosity-permeability / porosity-tortuosity relations has been explored. We conducted case studies of two-phase flows, with different wettability conditions, in a single cylindrical pore, in serially arranged cylindrical pore bodies and …
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Hydrogeological characterization of the Mabou Group in the Picadilly region, New Brunswick
… directly above gypsum-infilled fractures; vugs and fractures within the Medium Sandstone subdivision; and the lower Mabou Siltstone at the base of the Mabou Group (within ~15m of base). Three of these zones are of interest as they tend to have relatively high permeabilities, with …
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A Comparative Study of Silicified Rock Reservoir in Shunnan 4 well of Tarim Basin with Hydrothermal Chert Reservoir of Parkland Gas Field in Western Canada Sedimentary Basin
… host rock or filled in the fractures/dissolution vugs after the saddle dolomite cement. A third type of silica identified in this study is the euhedral quartz cement. Coreii based geochemical exploration has been put forward including C-O and Sr-O isotope analysis (mainly on RD1, RD2, CD1, CD2 and …
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Relative timing of dolomitization and silica cementation in the Cambrian Potosi and Eminence Dolomites in the Illinois Basin, USA
… and quartz cementation within dissolution voids (vugs). A detailed petrographic study has therefore been undertaken to reconstruct the complex history of post-depositional subsurface physical and chemical alteration (diagenesis) of the Potosi and Eminence Dolomites. Analysis of the Potosi and …
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INTEGRATING SEDIMENTOLOGY, STRATIGRAPHY, GEOCHEMISTRY AND 3D GEOLOGICAL MODELLING: CONTRIBUTION TO GEOLOGICAL MAPPING FOR LAND KNOWLEDGE (CARG SHEET 081 ¿ROVERETO¿)
… occurrence of pendant cements and dissolution vugs filled with crystal silt immediately below the unconformity. This exposure, attributed to tectonic uplift, halted carbonate sediment production and led to the formation of a platform-scale erosional surface. Subsequent extensional tectonics …