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- W1943121318 abstract "Microbial mediation is the only demonstrated mechanism to precipitate dolomite under Earth surface conditions. A link between microbial activity and dolomite formation in the sabkha of Abu Dhabi has, until now, not been evaluated, even though this environment is cited frequently as the type analogue for many ancient evaporitic sequences. Such an evaluation is the purpose of this study, which is based on a geochemical and petrographic investigation of three sites located on the coastal sabkha of Abu Dhabi, along a transect from the intertidal to the supratidal zone. This investigation revealed a close association between microbial mats and dolomite, suggesting that microbes are involved in the mineralization process. Observations using scanning electron microscopy equipped with a cryotransfer system indicate that authigenic dolomite precipitates within the exopolymeric substances constituting the microbial mats. In current models, microbial dolomite precipitation is linked to an active microbial activity that sustains high pH and alkalinity and decreased sulphate concentrations in pore waters. Such models can be applied to the sabkha environment to explain dolomite formation within microbial mats present at the surface of the intertidal zone. By contrast, these models cannot be applied to the supratidal zone, where abundant dolomite is present within buried mats that no longer show signs of intensive microbial activity. As no abiotic mechanism is known to form dolomite at Earth surface conditions, two different hypotheses can reconcile this result. In a first scenario, all of the dolomite present in the supratidal zone formed in the past, when the mats were active at the surface. In a second scenario, dolomite formation continues within the buried and inactive mats. In order to explain dolomite formation in the absence of active microbial metabolisms, a revised microbial model is proposed in which the mineral-template properties of exopolymeric substances play a crucial role." @default.
- W1943121318 created "2016-06-24" @default.
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- W1943121318 date "2010-04-01" @default.
- W1943121318 modified "2023-10-11" @default.
- W1943121318 title "Dolomite formation within microbial mats in the coastal sabkha of Abu Dhabi (United Arab Emirates)" @default.
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- W1943121318 cites W1561053734 @default.
- W1943121318 cites W1608694173 @default.
- W1943121318 cites W1795272034 @default.
- W1943121318 cites W1965515104 @default.
- W1943121318 cites W1967628674 @default.
- W1943121318 cites W1970151449 @default.
- W1943121318 cites W1973571626 @default.
- W1943121318 cites W1976131977 @default.
- W1943121318 cites W1978771007 @default.
- W1943121318 cites W1979672033 @default.
- W1943121318 cites W1979883063 @default.
- W1943121318 cites W1981837546 @default.
- W1943121318 cites W1982119230 @default.
- W1943121318 cites W1983143813 @default.
- W1943121318 cites W1983191214 @default.
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- W1943121318 cites W1998933135 @default.
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- W1943121318 cites W2027439067 @default.
- W1943121318 cites W2033432841 @default.
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- W1943121318 doi "https://doi.org/10.1111/j.1365-3091.2009.01121.x" @default.
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