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Showing 1 to 20 of 233 for “"diagenesis"”.
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White River Group diagenesis
The geochemical characteristics of paleofluids in the White River Group played a vital role in controlling zeolitic alteration as well as the formation of calcretes. The White River Group is a terrestrially deposited sequence of mid-Tertiary age in the northern Rocky Mountains and Great Plains of …
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Experimental diagenesis of lime mud
Textures similar to those found in natural microcrystalline limestones (micrites) were produced by closed-system (70-200$\sp\circ$C/1-15.6 bars/1-486 days) and open-system (90-95$\sp\circ$C/1 bar/63-311 days; 10-200 mL/day) hydrothermal experiments on a variety of lime muds ($<$25 $\mu$m size …
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Sedimentology and diagenesis of Ediacaran phosphorites from South China
… Although the fidelity of this record is high, diagenesis and metamorphism frequently alter or overprint primary minerals and structures, necessitating validation of results from mineralogical and geochemical analyses and determinations of fossil affinities. Therefore, it is imperative to …
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Deposition and Diagenesis of the Blossom Sand, Panola County, Texas
<p>The Late Cretaceous Blossom Sand within the Austin Group is a historic gas reservoir in the East Texas basin, located at depths of approximately 2,000 ft below the surface. Since the discovery of the Carthage Field in 1918 in the East Texas Basin, the Blossom Sand has produced approximately 26 …
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Foraminiferal trace elements : uptake, diagenesis, and 100 m.y. paleochemical history
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1983.
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EFFECTS OF MICROTEXTURAL INTERACTIONS OF ORGANICS AND SILICA ON SILICA DIAGENESIS
… stretching mode peak at 1060 cm-1 with silica diagenesis. Opal-CT may have been observed to occur sporadically in some stratified experiments and associated controls, but apparently did not occur in intermixed configurations. In stratified experiments, no correlation was observed between opal-A …
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Carbonate rock-water diagenesis lower cretaceous, Stuart City Trend, South Texas
… and near-surface diagenetic history. Burial diagenesis has not significantly altered the chemical and isotopic character of these limestones. Marine diagenesis was volumetrically important and consisted of micritization and the precipitation of fine to very coarsely crystalline, fibrous to …
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High-resolution sequence stratigraphy and diagenesis of mixed carbonate/siliciclastic successions.
… systems tracts. At the sequence scale, early diagenesis is controlled by the degree of relative sea-level fall and subsequent subaerial exposure at the end of the highstand systems tract. If a sequence is bounded above by a type-t sequence boundary and there is evidence of a period of …
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Seagrass-Mediated Carbonate Dissolution and Early Diagenesis in Bahamas Bank Sediments
… play in carbonate dissolution and early diagenesis of Bahamas Bank sediments. Three aspects of this problem are addressed: (1) stable carbon isotopes as an indicator of early diagenesis of carbonates, using results of a field study; (2) carbonate dissolution stoichiometry and carbonate …
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Depositional environments and diagenesis, Interlake Formation (Silurian), Williston Basin, North Dakota
<p> The Interlake Formation is a succession of Silurian carbonates of large areal extent found in the Williston Basin. The Interlake attains a maximum thickness of about 1,100 feet in western North Dakota and thins to an erosional edge in eastern North Dakota, </p><p> The main purpose of this study …
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Investigating the Fate of Mg-bearing Calcium Carbonates During Early Diagenesis
… under conditions that approximate early diagenesis and burial. The study compares Mg-incorporation in carbonate precipitated from a solution with the composition of an idealized Silurian seawater in the presence of functionalized (-COOH) organic matter followed by moderate increases in …
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Sedimentology, diagenesis and geochemistry of the Great Limestone, Carboniferous, northern England.
Yoredale type cyclothems of the Mid-Carboniferous of north east England were deposited as a result of glacio-eustatic fluctuations arising from waxing and waning of the Gondwana ice sheets present in the southern hemisphere. Rhythmic alternations of areas of maximum cyclothem thickness have been …
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Sedimentology, Diagenesis and Reservoir Characteristics of Eocene Carbonates Sirt Basin, Libya
… original depositional characteristics caused by diagenesis. This diagenesis took place on the seafloor, under burial, and in the meteoric diagenetic environment. Early marine diagenetic processes affecting the Middle Eocene Gialo carbonates resulted in micritization of bioclasts. Later diagenesis …
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