Fracturing and calcite cementation controlling fluid flow in the shallow-water carbonates of the Jandaíra Formation, Brazil

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• 作者：Stefan de Graafp>ap>p> ; p>p>stefan_de_graaf@hotmail.comp> ; John J.G. Reijmerp>ap>p> ; p>p>fp>p> ; p>p>j.j.g.reijmer@vu.nlp> ; Giovanni V. Bertottip>bp>p> ; p>p>fp>p> ; p>p>g.bertotti@tudelft.nlp> ; Francisco H.R. Bezerrap>cp>p> ; p>p>bezerrafh@geologia.ufrn.brp> ; Caroline L. Cazarinp>dp>p> ; p>p>cazarin@petrobras.com.brp> ; Kevin Bisdomp>bp>p> ; p>p>k.bisdom@tudelft.nlp> ; Hubert B. Vonhofp>ep>p> ; p>p>hubert.vonhof@mpic.dep>
• 关键词：Geochemistry ; Fluid inclusion isotope analysis ; Fracturing ; Calcite cementation ; Fluid flow ; Permeability ; Janda&iacute ; ra formation ; Potiguar basin
• 刊名：Marine and Petroleum Geology
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：80
• 期：Complete
• 页码：382-393
• 全文大小：3289 K
• 卷排序：80

文摘

Isotope data were used to reconstruct paleo-fluid flow within the Jandaíra limestones. Fluid inclusion isotope analysis was applied for the first time on vein precipitates. Fluid flow appeared to be controlled by fracturing and cementation of calcite. Fluid supply happened by upwelling of groundwater from an underlying aquifer. The Jandaíra Formation experienced significant permeability variations through time.