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Indiana Geological Survey test hole SDH-306 has been proposed as a reference section for the Excello Shale Indiana Geological Survey test hole SDH-366 has been proposed as a reference section for the Excello Shale

Core from the Audubon Oil & Gas #A-1 Fritschle test hole in sec. 20, T 6 N, R 9 E, Jasper County (ISGS county no. 25354 Indiana Geological Survey test hole SDH-366 has been proposed as a reference section illustrating the Surv

...Paper 1625-D, https://doi.org/10.3133/pp1625D.</ref> published (in digital form) a Springfield thickness map that covers the entire Illinois Basin. ...nel and Peabody No. 43 and Sahara No. 9 east of the channel. Several cored test holes also record shaly coal fringing the channel. In most cases, the shale

...one near Caseyville, Owen (1856, p. 48, 49, 56) introduced the name in the form “Caseyville conglomerate.” Records of the Berry test hole, including the core description and electric and gamma-ray logs, are o