E. L. Runyan of the Sinclair Prairie Oil Company at Ardmore, Oklahoma, sent the writer four pieces of a 4-inch core containing graptolites from the Sinclair Oil and Gas Company’s Million and Thomas well No. 32, Sec. 5, T. 4 S., R. 3 W., 3 miles west of Healdton, Carter County, Oklahoma. He indicated the following drilled sequence: Pennsylvanian into Viola at 848 feet; the four graptolite zones at 1,510, 1,734, 1,739, and 1,910; base of Viola, 2,019; Birdseye limestone, 3,122-3,188 (in McLish formation);3 and total depth at 3,201 feet (in upper Arbuckle limestone unless dip in the well...

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First page of Oklahoma Well Core Shows Graptolites Through 400 Feet of Viola Limestone<xref ref-type="fn" rid="fn1"><sup>1</sup></xref>: GEOLOGICAL NOTES
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