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Examination of selected Dolomite horizons in the Lower Ordovician Kindblade Formation, Blue Creek Canyon, Slick Hills, S.W. Oklahoma
Finical, Rene Gabrielle
Finical, Rene Gabrielle
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[Fort Worth, Tex.] : Texas Christian University,
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2014
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Dolomites are rock units that invariably record a complex history of deposition and diagenesis. Within the Slick Hills of southwestern Oklahoma, there are extensive exposures of dolomite among the carbonate outcrops of the Late Cambrian- Early Ordovician Arbuckle Group. The Kindblade Formation is a 1,400 ft (427m) thick carbonate section within the Arbuckle Group that was deposited during the Early Ordovician (485-478 Ma) and has been heavily dolomitized in areas of the Slick Hills such as Saddle Mountain. Exposures of dolomite near Blue Creek Canyon do not exhibit the pervasive dolomitization that encompasses the entire Kindblade section as described at Saddle Mountain. Instead, dolomite observed in the Blue Creek Canyon area is strata-bound in conjunction with horizons of limestone displaying varying degrees of alteration. The petrographic and geochemical analyses of these dolomites reveal a multifaceted diagenetic history including penecontemporaneous dolomitization, meteoric water mixing and exposure to hydrothermal fluids.
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Geological Sciences