Fine-grained units underlying the Atoka Lime Formation in the Midland Basin have historically been interpreted as Pennsylvanian (Atokan) or Mississippian (Chesterian) strata. Recent palynology data suggest that the shale was deposited during the late Mississippian (Osagean-Chesterian), making it equivalent to the Barnett Shale. The trend of the Barnett was
studied in a 25-mi2 (~65 Km2) area in the Central Midland Basin.
In the study area, siliceous-calcareous units comprising the Barnett shale can be divided into an upper and lower unit. The upper unit can be further subdivided into six subunits by log curve markers, interpreted as gravity-flow deposits consisting of silty bioclastic debris. Isopach maps of the flow deposits suggest a source to the north. Preliminary TOC analyses suggest that the upper Barnett section is relatively TOC lean, whereas the lower Barnett has higher values. Exploration focus can be enhanced by detailed mapping of flows for the upper Barnett.
| Identifer | oai:union.ndltd.org:TCU/oai:etd.tcu.edu:etd-07022012-103921 |
| Date | 02 July 2012 |
| Creators | Osterlund, Clark Harrison |
| Contributors | Helge Alsleben, Nowell Donovan, Stonnie Pollock |
| Publisher | Texas Christian University |
| Source Sets | Texas Christian University |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf, application/octet-stream |
| Source | http://etd.tcu.edu/etdfiles/available/etd-07022012-103921/ |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to TCU or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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