Hydrothermal dolomite
WebWith development of new concepts in hydrothermal dolomitization, the study aims in particular to test the hypothesis that dolomitizing fluids were sourced from either … WebThe latest dolomite bandwagon is the “hydrothermal dolomite model”. In its present form, this bandwagon is doomed or at least very much overstated for at least two reasons: (1) …
Hydrothermal dolomite
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WebThe ratio of fragment to cement is 4 to 1. The crystals of fluorite, dolomite, and calcite are located around the clasts of the breccia as well as in satellite veins (Figure 2a,b). Fluorite and dolomite in the matrix of the breccia also appear in nests and cavities, in which the amount of dolomite is higher (Figure 2a,b). WebAl-Aasm, I.S. Origin and characterization of hydrothermal dolomite in the Western Canada Sedimentary Basin. J. Geochem. Explor. 2003, 78–79, 9–15. [Google Scholar] Smith, B. …
WebDolomite is not a simple mineral; it can form as a primary precipitate, a diagenetic replacement, or as a hydrothermal/metamorphic phase, all that it requires is permeability, a mechanism that facilitates fluid flow, and a … WebDolomitization is a geological process by which the carbonate mineral dolomite is formed when magnesium ions replace calcium ions in another carbonate mineral, calcite. It is …
Web16 jun. 2024 · The Middle-Upper Cambrian Xixiangchi carbonates in the Sichuan Basin have been pervasively dolomitized. In the presented work, petrographic investigation revealed … Web1 okt. 2002 · Very hot, very shallow hydrothermal dolomitization: an example from the Maritime Alps (NW Italy-SE France) In the Maritime Alps (NW Italy–SE France), the …
Webhydrothermal dolomite; diagenetic settings; optical petrography; geochemical; Triassic-Jurassic successions; Provençal Domain 1. Introduction The formation of low- versus high-temperature dolomites in carbonate successions is attributed to separate diagenetic conditions and fluid origins [ 1, 2 ].
WebThe hydrothermal-derived D3 dolomites exhibit a different REE partition pattern by contrast. The negative Eu anomalies of D3 dolomites may represent hydrothermal fluid … alaska usa federal credit union eagle riverWebHence, a dolomite should be called hydrothermal only if it can be demonstrated to have formed at a higher than ambient temperature, regardless of fluid source or drive. … alaskausafederalcreditunion.orgWebDolomite forms in hydrothermal veins or as a pore-filling mineral in carbonate rocks, and more rarely as an accessory component in igneous pegmatites or altered mafic igneous … alaska usa federal credit union scorecardWeb1 mrt. 2024 · These characteristics have been documented for hydrothermal fluids (Klinkhammer et al., 1983) and hydrothermal dolomites in the Vibernum Trend, USA , and the San Vicente District, Peru (Spangenberg et al., 1999), and are consistent with the presence of MVT mineralization on the Cathedral platform margin at the Kicking Horse … alaska usa scorecard loginWeb1 sep. 2007 · The term “hydrothermal dolomite” is confusing and meaningless (Machel and Lonnee, 2002). To study the origin of dolomite and its hydrothermal depositional setting, I examined modern settings, including the Mediterranean Sea (Friedman, 1991) (Figure 1). The shallow-water facies in this modern setting consists of dolomite and … alaska usa federal credit union zelleWeb1 mrt. 2024 · Geology. There are numerous examples of fault-controlled, so-called hydrothermal dolomite (HTD), many of which host economic mineral deposits or … alaska usa mortgage refinance ratesWebLIU, H., MA, T., TAN, X., ZENG, W., HU, G., XIAO, D., … SU, C. (2016). Origin of structurally controlled hydrothermal dolomite in epigenetic karst system during ... alaska usa federal credit union rtn