01347cam a2200325 4500 gs 65000397 DLC 20260227111418.0 700709s1965 arua b 000 0 eng c gs 65000397 U.S. Geological Survey Library DLC DLC n-us-ar QE87 .A3 no. 20-D QE654 .H16 557.67/08 s Haley, Boyd Raymond, 1922- Geological formations penetrated by the Shell Oil Company No. 1 Western Coal and Mining Co. well on the backbone anticline, Sebastian County, Arkansas, by Boyd R. Haley and Sherwood E. Frezon. [Little Rock] Arkansas Geological Commission, 1965. 17 p. 1 fold. illus. 28 cm. Arkansas. Geological Commission. Information circular 20-D "Prepared in cooperation with the U.S. Geological Survey." Bibliography: p. 6-7. Geology Arkansas Sebastian County. Borings Arkansas Sebastian County. Geology, Stratigraphic Paleozoic. Formations (Geology) Sebastian County. Frezon, Sherwood E. (Sherwood Earl), 1921- joint author. Geological Survey (U.S.) Information circular (Arkansas Geological Commission) ; 20-D. 30128 30128