Type section: In 1970, Burger and Wier formally proposed the name “Stendal Limestone Member” and designated the type section in the SE¼NE¼SW¼ sec. 3, T. 3 S., R. 7 W. near Stendal in Pike County, Indiana.
History of usage:
In several unpublished manuscripts, Wier proposed the name “Stendal Limestone Member” (of the Petersburg Formation) for the limestone previously known as the Houchin Creek cap (Weller, Henbest, and Dunbar, 1942, p. 32) or the Houchin Creek Limestone (Cooper, 1946, p. 16) that is exposed near Stendal, Pike County, Indiana (Burger and Wier, 1970, 1986).
The Stendal Limestone Member is a black limestone that is dense, argillaceous, and fossiliferous in places (Burger and Wier, 1970, 1986). It ranges from 1 to 3 ft (0.3 to 0.9 m) in thickness (Burger and Wier, 1970, 1986). It overlies a black shale, 1 to 3 ft (0.3 to 0.9 m) thick, which separates this limestone from the underlying Houchin Creek Coal Member (Burger and Wier, 1970, 1986).
The Stendal is probably correlative with the Hanover Limestone Member of western Illinois and with the black limestone overlying the Ruff Coal (Western Kentucky No. 8b) in Kentucky (Burger and Wier, 1970, 1986).
Regional Indiana usage:
Illinois Basin (COSUNA 11)
Houchin Creek cap, Houchin Creek Limestone
Geologic Map Unit Designation:
Note: Hansen (1991, p. 52) in Suggestions to authors of the reports of the United States Geological Survey noted that letter symbols for map units are considered to be unique to each geologic map and that adjacent maps do not necessarily need to use the same symbols for the same map unit. Therefore, map unit abbreviations in the Indiana Geologic Names Information System should be regarded simply as recommendations.
COSUNA areas and regional terminology
Names for geologic units vary across Indiana. The Midwestern Basin and Arches Region COSUNA chart (Shaver, 1984) was developed to strategically document such variations in terminology. The geologic map (below left) is derived from this chart and provides an index to the five defined COSUNA regions in Indiana. The regions are generally based on regional bedrock outcrop patterns and major structural features in Indiana. (Click the maps below to view more detailed maps of COSUNA regions and major structural features in Indiana.)
COSUNA areas and numbers that approximate regional bedrock outcrop patterns and major structural featuers in Indiana.
Major tectonic features that affect bedrock geology in Indiana.
Burger, A. M., and Wier, C. E., 1970, Stendal Limestone Member, in Shaver, R. H., Burger, A. M., Gates, G. R., Gray, H. H., Hutchison, H. C., Keller, S. J., Patton, J. B., Rexroad, C. B., Smith, N. M., Wayne, W. J., and Wier, C. E., Compendium of rock-unit stratigraphy in Indiana: Indiana Geological Survey Bulletin 43, p. 172.
Burger, A. M., and Wier, C. E., 1986, Stendal Limestone Member, in Shaver, R. H., Ault, C. H., Burger, A. M., Carr, D. D., Droste, J. B., Eggert, D. L., Gray, H. H., Harper, Denver, Hasenmueller, N. R., Hasenmueller, W. A., Horowitz, A. S., Hutchison, H. C., Keith, B. D., Keller, S. J., Patton, J. B., Rexroad, C. B., and Wier, C. E., Compendium of Paleozoic rock-unit stratigraphy in Indiana–a revision: Indiana Geological Survey Bulletin 59, p. 150.
Cooper, C. L., 1946, Pennsylvanian ostracodes of Illinois: Illinois State Geological Survey Bulletin 70, 177 p.
Hansen, W. R., 1991, Suggestions to authors of the reports of the United States Geological Survey (7th ed.): Washington, D.C., U.S. Geological Survey, 289 p.
Shaver, R. H., coordinator, 1984, Midwestern basin and arches region–correlation of stratigraphic units in North America (COSUNA): American Association of Petroleum Geologists Correlation Chart Series.
Weller, J. M., Henbest, L. G., and Dunbar, C. O., 1942, Stratigraphy of the fusuline-bearing beds of Illinois, in Dunbar, C. O., and Henbest, L. G., Pennsylvanian Fusulinidae of Illinois: Illinois State Geological Survey Bulletin 67, p. 9-34.
For additional information, contact:
Nancy Hasenmueller (firstname.lastname@example.org)Date last revised: January 13, 2016