Diagenesis in the Upper Cretaceous Eagle Ford shale, south Texas
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This study utilizes three cores provided by Devon Energy from LaVaca and Dewitt Counties, TX, which were analyzed with a focus on diagenetic fabrics within the Lower Eagle Ford. A better understanding of paragenesis within the organic-rich Lower Eagle Ford was developed with the use of XRF and XRD measurements, thin section samples, stable isotope analysis, and CL analysis. The majority of diagenetic alteration occurred early at shallow depths within anoxic/suboxic environments and slightly sulfate-reducing conditions from diagenetic fluids with varying isotopic composition. Diagenetic ...