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Lookup NU author(s): Professor Andrew Aplin
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The oxygen isotopic compositions and inferred precipitation temperatures of quartz cements in a suite of deeply buried sandstones from the North Sea, Gulf Coast, and western Canada basins indicate that, in almost every case, the quartz precipitated from O-18-rich basinal waters. O-18-rich waters are found in strictly limited volumes in sedimentary basins. Silica transport and quartz cementation could not therefore have occurred as a result of large-scale advection of basinal or meteoric waters, because this would require very large fluid fluxes. Quartz cementation was driven by processes operating on a local scale. The isotopic data do not uniquely indicate the mechanisms of silica transport but are consistent with both diffusion and local recycling of fluid.
Author(s): Aplin AC, Warren EA
Publication type: Article
Publication status: Published
Print publication date: 01/09/1994
ISSN (print): 0091-7613
ISSN (electronic): 1943-2682
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