Who We Are
The Indiana Geological and Water Survey
The staff that works for IndianaThe Survey consists of a diverse group of scientists, specialists, and support staff dedicated to serving the earth science needs of the state of Indiana. They include research geologists in a variety of disciplines and specialists in cartography, GIS, database and web development, editing, and layout design, supported by an active business staff. The Survey is organized into three divisions: Research, Information Services, and Business Affairs.
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Water & Environment
Energy & Minerals
Water & Environment
Outreach & Education
IGSMap is the public source for geologic maps and data in Indiana. The Map Gallery helps people find commonly used maps and information for a better understanding of Indiana's geologic materials, resources, and issues.
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- Petroleum Database Management System
- New Albany Shale
- Colchester Coal Member
- Danville Coal Member
- Hymera Coal Member
- Seelyville Coal Member
- Springfield Coal Member
- Industrial Mineral Producers of Indiana
- Atlas of New Albany Shale Photomicrographs of Organic Matter
- Coal Mine Information System
- Coal Stratigraphic Database
- Underground Coal Gassification Potential in the Illinois Basin
- Outreach & Education
Type Iocality and use of name: The name Raben Branch was first used for exposures of a thin coalbed along the small stream of Raben Branch in the SE¼ sec. 11, T. 5 S., R. 12 W., Posey County, Ind. (Malott, 1948, p. 132). This coal was assigned member status in the Patoka Formation by Wier (1965) and is here given the slightly modified name Raben Branch Coal Member.
Description: The Raben Branch member, a thin coal or smut streak about an inch (0.03 m) thick lying on a thin underclay, is a persistent marker bed in Vanderburgh and Posey Counties. This unit is overlain by a thin sideritic clay containing numerous shells and imprints of the conchostracan Estheria. The Raben Branch lies 20 feet (6 m) below the Parker Coal Member and 1 to 5 feet (0.3 to 1.5 m) above the Dicksburg Hills Sandstone Member, both of the Patoka Formation.
Correlation: The Womac Coal Member of the Modesto Formation of Illinois has been correlated with the Raben Branch by Hopkins and Simon (1975, p. 196).