The major facies in the EOG Gordon SWD core are mudstone, siltstone, phosphatic layers, shell layers, and a carbonate concretion. Facies C2 is a sandy phosphate layer, which concentrated organic matter. Facies C2 is traceable and can be interpreted as a condensed section associated with a maximum flooding surface. The uranium in phosphate and organic matter cause a high gamma-ray reading in this interval. High TOC and high gamma-ray response occur in the same intervals of the core, but their magnitudes are not directly related. The Barnett deposition was sourced from the north and was a function of eustacy. The middle and upper unit were sourced from the Ouachita fold-thrust belt. The siltstone facies, common in these intervals, is rich in sponge spicules and is sourced from a reef growing on the thrust belt. A change in relative sea level in these two intervals is due to both eustacy and tectonics.
Identifer | oai:union.ndltd.org:TCU/oai:etd.tcu.edu:etd-04282009-131358 |
Date | 28 April 2009 |
Creators | Monroe, Rachael Marie |
Contributors | John A Breyer |
Publisher | Texas Christian University |
Source Sets | Texas Christian University |
Language | English |
Detected Language | English |
Type | text |
Format | application/pdf, application/msword |
Source | http://etd.tcu.edu/etdfiles/available/etd-04282009-131358/ |
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