The legacy IGWS website is in the process of being decommissioned. Most services have been migrated to igws.indiana.edu. Only a few services will remain temporarily until the migration is complete..
The Ste. Genevieve Limestone (Ste. Gen) is a middle Mississippian carbonate deposited in the Illinois Basin (IB). This unit, predominantly composed of oolitic and skeletal grainstones (limestone), has been of great interest within the IB for its economic potential and water resource management. While the three known members of the Ste. Gen contain deposits interpreted to have formed during shallow marine shoaling, and terrestrial carbonate dune-building, there is another sequence of rock in the Ste. Gen that fits none of these depositional environments. Known informally as the Indian Creek Beds (IC), the extent and significance of this lime mudstone has only recently been recognized. While region-wide studies on the IB have broadly characterized this unit, no detailed study on the IC in Indiana has been conducted.
Objective:
This study aims to formally characterize the IC using outcrops and cores donated by the U.S. Gypsum Corporation (USGC) by describing the lithology and analyzing stable light isotopes from samples collected. Using these two methods, we will use the stratigraphy and geochemical analyses to determine the depositional history of the IC.
Approach:
Products:
Masters thesis for Siurek (summer 2025), IJES or IAS paper
Benefits:
Better understanding of a Middle Mississippian carbonate unit and updated nomenclature
Your verfication message has been resent to the email associated with your account. Please check your email before you try to log in again.
Session Expiration
Your session for the Indiana Geological and Water Survey will expire in 30 minutes. Please refresh your broswer or click here to restart your session timer.
Your session for the Indiana Geological and Water Survey is about to expire. Your browser will automatically refresh in
