Carboniferous flysch, Ouachita Mountains, southeastern Oklahoma; Big Cedar-Kiamichi Mountain section
R. J. Moiola, G. Briggs, G. Shanmugam, 1988. "Carboniferous flysch, Ouachita Mountains, southeastern Oklahoma; Big Cedar-Kiamichi Mountain section", South-Central Section of the Geological Society of America, O. T. Hayward
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Located in LeFlore County (Big Cedar and Octavia 7½-minute Quadrangles), the Big Cedar–Kiamichi Mountain section is continuously exposed in roadcuts that parallel U.S. 259 (Figs. 1, 2, 3). Commencing 2.6 mi (4.2 km) south of the Big Cedar intersection of Oklahoma 63 and U.S. 259, at the contact between the Stanley and Jackfork Groups (Fig. 3), an uninterrupted sequence of Jackfork is superbly exposed as the road climbs up to and beyond the summit of Kiamichi Mountain. Reinterpretation (Briggs, 1973, and this text) of the section Cline and Moretti (1956) measured at the time U.S. 259 was under construction indicates that 6,604 ft (2,013 m) of Jackfork are present (Fig. 2). The roadcuts are accessible all year, but caution must be exercised by parking cars well off the road, being careful of traffic, and avoiding dangerous areas with high rock faces or areas that may have loose or falling rocks.
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South-Central Section of the Geological Society of America
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