Fracture patterns and their origin in the Upper Devonian Antrim Shale gas reservoir of the Michigan basin: A review

Robert T. Ryder

Open-File Report 96-23

Figure 2. Correlation chart showing Upper Devonian and adjoining strata in the Michigan basin (from Gutschick and Sandberg, 1991). Closed black circles indicate conodont collections identified by C.A. Sandberg.

Created by the EERT WWW Staff.

U.S. Department of the Interior, U.S. Geological Survey
URL: http://pubs.usgs.gov/of/1996/of96-023/figure2.htm
Maintained by Publishing Services
Last modified: 21:16:36 Thu 10 Jan 2013
Privacy statement | General disclaimer | Accessibility