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Showing 1 to 20 of 118 for “"Thin Sections"”.
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Integrating rotational components to optical properties observed in petrographic thin sections via automated image acquisition and analysis
The analysis of petrographic thin sections is a widely used process for the identification of the mineralogy of rocks and the analysis of their textural and microstructural characteristics. Despite the benefits of petrographic thin section analysis, it remains a time-consuming process with the …
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Upscaling Lithology and Porosity Types from Microscopic to Core Domain with Thin Section Petrography, Dual Energy CT, and Rock Types: Creation of Diagenesis and Porosity Type Logs
… Types from the Microscope to the Core with Thin Section Petrography, Dual Energy CT, and Rock Types: Creation of Diagenesis and Porosity Type Logs Authors: Jacob M. Proctor, André W. Droxler, Naum Derzhi, Heath H. Hopson, Paul (Mitch) Harris, Pankaj Khanna, and Daniel J. Lehrmann ABSTRACT …
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Arsenic Release from Chlorine Promoted Oxidation of Pyrite in the St. Peter Sandstone Aquifer, Eastern Wisconsin
… of arsenic is As-bearing sulfide minerals within the aquifer. There is concern that periodic disinfection of wells by chlorination may facilitate arsenic release to groundwater by increasing the rate of sulfide mineral oxidation. Current guidance from the Wisconsin Department of Natural …
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Petrography, Sedimentology, Diagenesis, and Reservoir Characteristics of Some Pennsylvanian Phylloid Algal Limestones: Kansas and Utah, u.s.a. (United States)
… have been systematically analyzed with 1200 thin sections. These rocks contain a typical Pennsylvanian biotic assemblage of phylloid algae, bryozoans, encrusting foraminifers, fusulinids, Composita, productid brachiopods, and pelmatozoans.
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Carbonate Microfacies and Depositional Environments of the Kinkaid Formation (Upper Mississippian) of the Illinois Basin
… of 17 centimeters from twelve stratigraphic sections in Southern Illinois and Western Kentucky, to determine their environments of deposition. Thin sections wer
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Petrography, Diagenesis and Depositional Models of the St. Louis Limestone, Valmeyeran (Middle Mississippian), Illinois Basin, u.s.a. (United States)
… was studied through eight cores and six field sections. Detailed petrography of 1542 oriented thin sections led to recognition of 16 carbonate microfacies. The vertical succession, reciprocal (lateral and vertical) relationships and correlation coefficients of the microfacies permitted …
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Microbial Communities of Healthy and Diseased Corals
… morphology as represented in transverse thin sections. Significant phenotypic plasticity was found between seawater depths and localities, as well as between two geographic regions, Curacao and Panama.
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Carbonate microfacies, depositional models and diagenesis of the Middle Devonian in Illinois, eastern Iowa and Missouri
… Iowa and Missouri were studied from ten field sections and four cores. Detailed petrographic analysis of almost 2,000 thin sections resulted in the recognition of twelve normal marine and twelve hypersaline microfacies. The vertical succession and statistical analysis of microfacies permitted …
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Reservoir petrology and production characteristics of the Lytton Springs Oil Field, Caldwell County, Texas
… County, Texas. X-ray diffraction techniques and thin sections were employed to study the mineralogy of the altered igneous rock commonly referred to as serpentine, from which the oil is being produced. Decline curves were used to study the production characteristics of the field and to make …
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Microfacies, Depositional Environments, and Diagenesis of the Amapa Carbonates (paleocene-Middle Miocene), Foz Do Amazonas Basin, Offshore Ne Brazil
A total of 2,795 thin sections were studied, representing the carbonate section of 18 wells drilled in the Foz do Amazonas Basin, offshore northeast Brazil. The Amapa Formation (Paleocene-Middle Miocene) consists of a carbonate platform adjacent to a landward fluvio-deltaic system which …
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Stratigraphy sedimentation and petroleum possibilities of the Middle Ordovician (Kimmswick-Galena) rocks of Missouri, Illinois and Iowa
… in Missouri, based on its gross lithology and thin section study, and its correlation with the Galena Formation in Illinois and Iowa. As a result of this study, based on the examination of twelve surface sections and 92 thin sections a three-fold subdivision of the Kimmswick Limestone is …
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Diagenesis of the middle member of the Bakken Formation, Williston Basin, North Dakota
… Cores from forty-one wells were examined. Thin sections were made from sixteen cores, eight producing wells and eight dry wells. All wells were used in the construction of cross sections and isopach maps. </p><p> The point counts used all traits common to each well with thin sections: …
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A Log and Core Analysis of the Marmaton Group, Granite Wash Fan Delta in the Anadarko Basin, Washita County, Oklahoma
… sandstones, conglomerates, and shale, and within Washita County, Oklahoma, are known to be a prolific hydrocarbon producer. The Marmaton Group in Washita County, though, has a variable and largely unestablished stratigraphic framework and sudden changes in lithology throughout the region, …
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Sedimentary Petrology of the Hartshorne Formation, Southeastern Arkoma Basin, Arkansas
… constrain the source area and terrain based on thin section mineralogy and texture. Thin sections were prepared from outcrops in the Arkoma Basin and were selected from a collection of 45 thin sections for analysis utilizing a petrographic microscope and petrographic analytical techniques.</p> …
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Analysis of Lacustrine Deposits of Custer Lookout and Leftor Butte, Stark County, North Dakota
… in question, Custer Lookout and Lefor Butte. Thin sections were made to help determine paleosetting of the limestone units through petrographic analysis and fossil allochems. Fossil ostracods and a charaphyte were critical in determining the lacustrine origin of the limestone beds. </p>
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Thin and Etched Section Analysis of a Limestone in the White River Formation
… was taken from the top of Sentinel Butte. Thin sections and etched sections were prepared from this sample and studied microscopically. The sample was found to be a dense, highly siliceous limestone which exhibits very thin, rippled laminations, ranging from one tenth to one half millimeter …
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An ultrastructural and immunocytochemical study of the wheat soil-borne mosaic virus, Polymyxa graminis relationship
… antibodies on viral suspensions and thin sections confirmed that (1) paraformaldehyde provided the best preservation of viral morphology, viral concentration, and antigenicity; (2) P; graminis is the actual vector of the virus; and (3) the labelling pattern of the fungal structures …
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Geology of Killam deep test near Valentine, Jeff Davis County, Trans-Pecos, Texas
… Killam well. Examination of well cuttings and thin sections of cuttings indicates eighteen volcanic units tentatively correlated with other volcanic rocks of the region.
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Effects of watering interval, planting depth and soil crusting on ermegence and seedling establishment of sorghum (sorghum bicolor (L.) moench)
… simulator, soil samples were prepared into thin sections that were examined under a microscope to determine the impact of water drops on the soil. Sorghum emergence, shoot height and shoot dry matter, and crust strengths of the soils were measured. Sorghum emergence was measured for 15 days …
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Effects of watering interval, planting depth and soil crusting on ermegence and seedling establishment of sorghum (sorghum bicolor (L.) moench)
… simulator, soil samples were prepared into thin sections that were examined under a microscope to determine the impact of water drops on the soil. Sorghum emergence, shoot height and shoot dry matter, and crust strengths of the soils were measured. Sorghum emergence was measured for 15 days …
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