Academic literature on the topic 'Diagenisis'

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Journal articles on the topic "Diagenisis"

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V, Gope Naik, Suresh U, and Sunil Kumar K. "Diagenesis of Glauconite Bearing Quartzites of the Cuddapah Basin, Andhra Pradesh, India." International Journal of Geology and Earth Sciences 2, no. 4 (2016): 19–31. https://doi.org/10.5281/zenodo.1560725.

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Cuddapah Basin is the unique basin that has the attracted many earth scientists. The litho stratigraphy and the structure of the basin have been studied in detail by various authors. However, the research on the sedimentological aspect of the basin was comparatively less. There are number of ferruginous quartzites that occur has interbeds within the formations at all stratigraphic levels, including the rocks of Kurnool Group. These ferruginous quartzite are all glauconite bearing. Hence, the diagenetic aspects of the glauconite and the quartzite have been studied in detail. The field maps are
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Bloomfield, J. "The role of diagenisis in the hydrogeological stratification of carbonate aquifers: an example from the chalk at Fair Cross, Berkshire, UK." Hydrology and Earth System Sciences 1, no. 1 (1997): 19–33. http://dx.doi.org/10.5194/hess-1-19-1997.

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Abstract. Carbonate rocks form important aquifers in many parts of the world and in north-west Europe the Chalk is a primary source of potable water. When flushed with relatively fresh groundwaters, the Chalk may undergo significant diagenetic alteration at relatively shallow depths resulting in a physically and hydrogeochemically stratified aquifer. Diagenetic affects may have important implications for the effective exploitable thickness of the Chalk aquifer and for water quality. In order to assess the affects of diagenesis on the properties of carbonate aquifers, matrix porosity, permeabil
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Maslennikov, Valeriy V., Nuriya R. Ayupova, Nataliya P. Safina, et al. "Mineralogical Features of Ore Diagenites in the Urals Massive Sulfide Deposits, Russia." Minerals 9, no. 3 (2019): 150. http://dx.doi.org/10.3390/min9030150.

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In weakly metamorphosed massive sulfide deposits of the Urals (Dergamysh, Yubileynoe, Yaman-Kasy, Molodezhnoe, Valentorskoe, Aleksandrinskoe, Saf’yanovskoe), banded sulfides (ore diagenites) are recognized as the products of seafloor supergene alteration (halmyrolysis) of fine-clastic sulfide sediments and further diagenesis leading to the formation of authigenic mineralization. The ore diagenites are subdivided into pyrrhotite-, chalcopyrite-, bornite-, sphalerite-, barite- and hematite-rich types. The relative contents of sphalerite-, bornite- and barite-rich facies increases in the progress
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Safina, Nataliya P., Irina Yu Melekestseva, Nuriya R. Ayupova, et al. "Authigenesis at the Urals Massive Sulfide Deposits: Insight from Pyrite Nodules Hosted in Ore Diagenites." Minerals 10, no. 2 (2020): 193. http://dx.doi.org/10.3390/min10020193.

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The pyrite nodules from ore diagenites of the Urals massive sulfide deposits associated with various background sedimentary rocks are studied using optical and electron microscopy and LA-ICP-MS analysis. The nodules are found in sulfide–black shale, sulfide–carbonate–hyaloclastite, and sulfide–serpentinite diagenites of the Saf’yanovskoe, Talgan, and Dergamysh deposits, respectively. The nodules consist of the core made up of early diagenetic fine-crystalline (grained) pyrite and the rim (±intermediate zone) composed of late diagenetic coarse-crystalline pyrite. The nodules are replaced by aut
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AbdulSalam Mehdi Altarif and Aizadeen Mohammed Abdullah Alhassan. "Study of diagenitic processes and surface texture of the oldest river terrace deposits in Shirqat area- northern Iraq." Tikrit Journal of Pure Science 21, no. 2 (2023): 136–42. http://dx.doi.org/10.25130/tjps.v21i2.980.

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The recent project deals with the diagenitic processes and surface textures of the oldest river terraces deposits in Shirqat area, the diagenitic processes compiled with Cementation, Compaction and Dissolution. The carbonate minerals represent the cementic materials while the point contact compaction represent the degree of compaction in this sediments because the small thickness of the overburden sediments and the secondary effects of differential dissolution. The surface texture is very developed in the large size of sediment included pebble, cobble and boulders which form very developed sur
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Maslennikov, Valery Vladimirovich. "Typochemistry of chalcopyrite of ore diagenites of massive sulfide deposits in the Southern Urals." Geologicheskii vestnik, no. 1 (March 3, 2025): 16–36. https://doi.org/10.31084/2619-0087/2025-1-2.

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At the South Urals massive sulfide deposits, ore diagenites are products of diagenetic transformation of sulfide turbidites have almost completely lost their clastic appearance due to the replacement of hydrothermal pyrite and sphalerite ore clasts by chalcopyrite. The LA-ICP-MS method was used to determine concentrations of chemical elements in diagenetic chalcopyrite for various ore-formation types of massive sulfide deposits in the Southern Urals, among which (according to [Seravkin, 2010]) are distinguished: Atlantic (Dergamysh); 3) Ural with three subtypes (U1 – Yubileynoe, U2 – Yaman-Kas
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Ambers, Clifford P., and Daniel D. Petzold. "Geochemical and petrologic evidence of the origin and diagenieis of a Late Mississippian, supratidal dolostone." Carbonates and Evaporites 11, no. 1 (1996): 42–58. http://dx.doi.org/10.1007/bf03175784.

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Safna, N. P., V. A. Kotlyarov, and I. A. Blinov. "Minerals of the Alunite Supergroup in Ores Diagenites of the Yaman-Kasymassive Sulfide Deposit (South Urals)." МИНЕРАЛОГИЯ (MINERALOGY), December 27, 2019, 19–30. http://dx.doi.org/10.35597/2313-545x-2019-5-4-2.

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Minerals of the alunite supergroup (alunite, plumbogummite, hinsdalite, crandallite) were found in ore diagenites of the Yaman-Kasy massive sulfde deposit, South Urals. Numerous spheroids (up to 20 μm) of these minerals with radial and zoned structure and acicular aggregates in assemblage with quartz, chlorite, and hematite are found in chalcopyrite, which replaced fragments of pyrite, marcasite and sphalerite during diagenesis, or in quartz-chlorite matrix. The minerals contain (wt. %): 7.16–19.81 P2O5, 0.93–8.77 CaO, 1.15–33.05 PbO, 1.21– 9.94 Fe2O3, 0.05–3.38 BaO and 0.2–2.51 ZnO. The Pb (p
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Chen, Hongfei, Xiongqi Pang, Liyin Bao, Jun Gao, and Naixiang He. "The characteristics of volcanic lithofacies and volcanic reservoirs in the Permian Jiamuhe Formation, Southern Zhongguai Rise, Junggar Basin, NW China." Interpretation, October 1, 2024, 1–44. http://dx.doi.org/10.1190/int-2024-0031.1.

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The southern Zhongguai Rise has gained wide attentions due to its commercial hydrocarbon discoveries from volcanic deposits in Jinlong Oilfield. The integrated analysis of geological and geophysical data assist in determination and depiction of volcanic lithology and volcanic facie, characterization of volcanic reservoirs as well as discussion of constrains on volcanic lithology/lithofacies. The conclusions suggest that two types of volcanic lithology, including volcaniclastic rocks and silicic moltenlava, can be identified based on cores. In addition, two types of volcanic lithofacies can be
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Avery, Ross, Juan A. Caceres, Kwang Yeol Park, et al. "Abstract 29: A New Biomarker for Diagnosis of Ischemic Stroke: Plasma Glycogen Phosphorylase-BB." Stroke 44, suppl_1 (2013). http://dx.doi.org/10.1161/str.44.suppl_1.a29.

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Background: Glycogen phosphorylase-BB (GPBB) is the key enzyme that breaks down glycogen to yield glucose-1-phosphate in order to meet the emergent ATP need during cerebral ischemia. GPBB is one of the most sensitive and specific plasma markers for early detection of acute myocardial ischemia. GPBB concentration is about 100 times higher in brain than in heart. We hypothesized that plasma levels of GPBB might elevate following cerebral ischemia. Methods: We measured plasma GPBB levels in 172 patients with imaging-confirmed brain infarction at two time points (within 9 hours of symptom onset an
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Dissertations / Theses on the topic "Diagenisis"

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Aplin, G. F. "Diagenisis of the Zechstein main reef complex, N.E. England." Thesis, University of Nottingham, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356017.

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