CARBONIFEROUS STRATIGRAPHY OF MICHIGAN REVISITED: IMPLICATIONS OF REVISED BEDROCK GEOLOGY MAPS OF CENTRAL JACKSON COUNTY, MICHIGAN, USA

Bedrock geology maps generated from water-well lithologic logs (6,000) and drill cores reveal new details of the stratigraphy of Carboniferous rocks in the Jackson, Michigan Coal Province (JCP, new term). The relation of voids created by mid-1800’s underground mining, to ground instability along I-94 in Jackson County has renewed interest in the distribution of coal in the JCP. Geologic maps are needed to address engineering, ground-water flow,...