Literatura académica sobre el tema "Lacustrine dolomite"

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Artículos de revistas sobre el tema "Lacustrine dolomite"

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Chen, Xiaoquan, Fengcun Xing, Shu Jiang, et al. "Origin and formation model of Eocene dolomite in the upper Niubao Formation of the Lunpola Basin, Tibetan Plateau." Interpretation 9, no. 3 (2021): SF11—SF22. http://dx.doi.org/10.1190/int-2020-0195.1.

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Using fresh core samples, we have determined the origin and formation process of Eocene lacustrine dolomites in the Tibetan Plateau through petrological, mineralogical, and geochemical analyses. Dolomitic rocks were collected from the upper member of the Eocene Niubao Formation in the Lunpola Basin, consisting of dolomitic mudstone, argillaceous dolomite, dolomite-bearing mudstone, and mud-bearing dolomite. These dolomites are dominated by aphanotopic and microcrystalline dolomites, with minor amounts of euhedral or subhedral powder- and fine-crystalline dolomites. Carbon and oxygen stable iso
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Süzen, M. L., and A. G. Türkmenoğlu. "Lacustrine mineral facies and implications for estimation of palaeoenvironmental parameters: Neogene intervolcanic Pelitçik Basin (Galatean Volcanic Province), Turkey." Clay Minerals 35, no. 3 (2000): 461–75. http://dx.doi.org/10.1180/000985500546882.

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AbstractThe mineralogy of the Neogene lacustrine facies of Pelitçik basin was investigated for the purpose of deriving the palaeoenvironmental parameters of this intervolcanic basin. The laboratory studies indicate that dolomite and K-feldspar are the major non-clay minerals in the study area, where plagioclase, analcime, fibrous zeolite and quartz are the minor constituents. Dolomites are found to be non-stoichiometric in chemistry. The clay fraction of the lacustrine facies is composed mainly of dioctahedral smectites. The smectites are rich in Al-Fe indicating a detrital origin. Illite comp
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LINDTKE, J., S. B. ZIEGENBALG, B. BRUNNER, J. M. ROUCHY, C. PIERRE, and J. PECKMANN. "Authigenesis of native sulphur and dolomite in a lacustrine evaporitic setting (Hellín basin, Late Miocene, SE Spain)." Geological Magazine 148, no. 4 (2011): 655–69. http://dx.doi.org/10.1017/s0016756811000124.

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AbstractAbundant sulphur is present in the Late Miocene evaporitic sequence of the lacustrine Hellín basin in SE Spain. Weathering of Triassic evaporites controlled the chemical composition of the Miocene lake. The lacustrine deposits comprise gypsum, marlstones, diatomites and carbonate beds. Sulphur-bearing carbonate deposits predominantly consist of early diagenetic dolomite. Abundant dolomite crystals with a spheroidal habit are in accordance with an early formation and point to a microbial origin. The carbon isotopic composition of the dolomite (δ13C values between −10 and −4‰) indicates
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Last, William M. "Lacustrine dolomite—an overview of modern, Holocene, and Pleistocene occurrences." Earth-Science Reviews 27, no. 3 (1990): 221–63. http://dx.doi.org/10.1016/0012-8252(90)90004-f.

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Meng, Hailong, Zhengxiang Lv, Zhongmin Shen, and Chenhao Xiong. "Carbon and Oxygen Isotopic Composition of Saline Lacustrine Dolomite Cements and Its Palaeoenvironmental Significance: A Case Study of Paleogene Shahejie Formation, Bohai Sea." Minerals 9, no. 1 (2018): 13. http://dx.doi.org/10.3390/min9010013.

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The dolomite reservoirs in the Paleogene Shahejie Formation in the Bozhong area of the Bohai Bay Basin contain a large amount of dolomite cement. Petrologic and mineralogic studies have shown that the dolomite cements can be divided into three types according to their occurrence: coating dolomite (CD), pore-lining dolomite (LD), and pore-filling dolomite (FD). The laser microsampling technique was used to analyze the C and O isotopes in the carbonate minerals. This method is an effective way to produce CO2 gas from a particular carbonate structure in a thin section, and it has a spatial resolu
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Huang, Chenggang, Fan Zhao, Jianying Yuan, Lirong Wu, and Chen Gengxin. "The characteristics of dolomite reservoir in saline lacustrine Basin, Qaidam, China." Carbonates and Evaporites 31, no. 3 (2015): 307–17. http://dx.doi.org/10.1007/s13146-015-0267-0.

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Mees, F. "An occurrence of lacustrine Mg-smectite in a pan of the southwestern Kalahari, Namibia." Clay Minerals 36, no. 4 (2001): 547–56. http://dx.doi.org/10.1180/0009855013640008.

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AbstractThe clay fraction of the deposits of the Otjomongwa Pan, southwestern Kalahari, is dominated by Mg-smectite. This mineral formed as an authigenic precipitate in a groundwater-fed lake, without involving the transformation of a precursor mineral. During the earliest recorded period, Mg-smectite formed together with sepiolite and dolomite in a shallow lake. This period was ended by a change in environmental conditions that led to an increase in the depth of the lake and a decrease in salinity and Mg content of the water. This resulted in a transition to a mineral association without sepi
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Köster, Mathias H., Stefan Hölzl, and H. Albert Gilg. "A strontium isotope and trace element geochemical study of dolomite-bearing bentonite deposits in Bavaria (Germany)." Clay Minerals 52, no. 2 (2017): 161–90. http://dx.doi.org/10.1180/claymin.2017.052.2.01.

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AbstractThe Landshut bentonites that formed from Ca- and Mg-poor rhyolitic tuffs in a fluviatile-lacustrine depositional environment of the Miocene Upper Freshwater Molasse, southern Germany, contain abundant palustrine, pedogenic and groundwater carbonates. Geochemical analyses of dolomites, calcites and smectites from bentonites of various environments by X-ray diffraction, thermal ionization mass spectrometry, inductively coupled plasma-mass spectrometry, and handheld X-ray fluorescence yield new insights into the compositions of fluids and sources of imported components involved in carbona
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Yuan, Jianying, Chenggang Huang, Fan Zhao, and Sun Xiujian. "Geochemical characteristics of Eocene dolomite in the saline lacustrine basin, Qiadam, China." Carbonates and Evaporites 32, no. 4 (2016): 547–60. http://dx.doi.org/10.1007/s13146-016-0315-4.

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de Oliveira Nardi Leite, Caroline, Carlos Manuel de Assis Silva, and Luiz Fernando de Ros. "Depositional and diagenetic processes in the pre-salt rift section of a Santos Basin area, SE Brazil." Journal of Sedimentary Research 90, no. 6 (2020): 584–608. http://dx.doi.org/10.2110/jsr.2020.27.

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ABSTRACT This study aims to provide a better understanding of the genesis and diagenetic evolution of the rift pre-salt deposits of the Santos Basin, in the context of evolution of the lake system in which the sediments were deposited. The study of the syngenetic and early diagenetic constituents and their paragenetic relations allowed reconstruction of the evolution of lacustrine environmental conditions during the rift stage in the central area of the basin. A petrological study was performed on cores and sidewall samples of a well drilled through the pre-salt rift section in the Lower Creta
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Tesis sobre el tema "Lacustrine dolomite"

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Last, Fawn. "Carbonate microbialite formation in a prairie saline lake in Saskatchewan, Canada: paleohydrological and paleoenvironmental implications." Elsevier, 2010. http://hdl.handle.net/1993/19888.

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Manito Lake is a large, perennial, Na-SO4 dominated hypersaline lake located in the northern Great Plains of western Canada. Significant water level decrease over the past several decades has lead to reduction in volume and surface area. Today, the lake is 15% of its mid -20th century volume and 46% of its former area. This decrease in water level has exposed large areas of nearshore microbialites. These organosedimentary structures have various external morphologies, vary in mineralogical composition, and show a variety of internal fabrics from finely laminated to massive and clotted. Th
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Capítulos de libros sobre el tema "Lacustrine dolomite"

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WRIGHT, DAVID T. "BENTHIC MICROBIAL COMMUNITIES AND DOLOMITE FORMATION IN MARINE AND LACUSTRINE ENVIRONMENTS — A NEW DOLOMITE MODEL." In Marine Authigenesis: From Global to Microbial. SEPM (Society for Sedimentary Geology), 2000. http://dx.doi.org/10.2110/pec.00.66.0007.

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Actas de conferencias sobre el tema "Lacustrine dolomite"

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Ronchi, Paola, Giovanni Gattolin, Alfredo Frixa, and Chiara Margliulo. "West Africa Lacustrine Pre-Salt Carbonates: How Interaction of Tectonics and Diagenesis Produced Different Reservoir Facies." In SPE/AAPG Africa Energy and Technology Conference. SPE, 2016. http://dx.doi.org/10.2118/afrc-2571388-ms.

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ABSTRACT During the Early Cretaceous South-Atlantic opening, in large lacustrine basins a series of shallow water carbonate platforms grew along lake margins and paleo-highs. These carbonates are giant reservoirs in the Brasil offshore, while in Angola are productive in Cabinda (Lower Congo Basin) and are being explored in the Kwanza Basin with minor success. These carbonates have peculiar facies associations represented mainly by microbialites and coquinas, and are affected by dolomitization which modified the original pore system in different ways. In presence of deep-seated extensional faul
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LI, Zhexuan, Yiqun Liu, Yun Nan, Hong LI, and Xin Jiao. "A SET OF PRIMARY DOLOMITE ROCKS FORMED IN LACUSTRINE MANTLE-ORINGINED HYDROTHERMAL ENVIRONMENT IN SANTANGHU BASIN, XINJIANG, NW CHINA." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-282180.

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Fjeldberg, Egil Romsås, Yngve Bolstad Johansen, Lodve Hugo Olsborg, Geir Frode Kvilaas, Tor-Ole Jøssund, and Harish Datir. "X-RAY DIFFRACTION, X-RAY FLUORESCENCE, AND NEUTRON INDUCED SPECTROSCOPY BASED CORRECTION TO IVAR AASEN GEOMODEL: AN OILFIELD FROM THE NORWEGIAN NORTH SEA." In 2021 SPWLA 62nd Annual Logging Symposium Online. Society of Petrophysicists and Well Log Analysts, 2021. http://dx.doi.org/10.30632/spwla-2021-0042.

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The Ivar Aasen (IA) oilfield is located on the Gudrun Terrace on the eastern flank of the Viking Graben in the Norwegian North Sea. The field was discovered in 2008. The reservoir is located within a sedimentary sequence of Mid-Jurassic to Late-Triassic age, which consists of shallow marine to fluvial, alluvial, floodplain and lacustrine deposits overlying a regionally extensive, fractured calcrete interval. The sequence exhibits a complex mineral composition and is heterogeneous at a scale below that of a logging sensor. Shale layers, re-deposited shale and what was first believed to be redep
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Informes sobre el tema "Lacustrine dolomite"

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Chatalov, Athanas, and Yavor Stefanov. Lacustrine and Palustrine Dolomitic Deposits in the Moesian Group (Upper Triassic) from Northwestern Bulgaria. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, 2018. http://dx.doi.org/10.7546/crabs.2018.03.10.

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