The Betsie Shale Member a datum for exploration and stratigraphic analysis of the lower part of the Pennsylvanian in the Central Appalachian Basin Datum for exploration and stratigraphic analysis of the lower part of the Pennsylvanian in the Central Appalachian Basin Rice, Charles L. creator author. Geological Survey (U.S.) issuing body. text bibliography vau 1987 monographic eng remote 1 online resource (iii, 17 pages) : illustrations. by Charles L. Rice [and three others]. Title from title screen (viewed Aug. 18, 2014). Includes bibliographical references. n-usa-- n-us-ky n-us-tn Geology, Stratigraphic Pennsylvanian Shale Appalachian Region Breathitt Formation (Ky. and Tenn.) Geology, Stratigraphic Pennsylvanian Geologic Period Shale Appalachian Region United States Breathitt Formation From 280 to 310 million years ago fast I 19.3:1834 I 19.3:1834 Betsie Shale Member (DLC) 88600007 (OCoLC)17439774 U.S. Geological Survey bulletin ; 1834 https://purl.fdlp.gov/GPO/gpo66649 COP 140822 20211120173948.0 in00003776587 eng