The Lafayette Bedrock Valley System (new name) is a physically defined system of deep bedrock valleys that merge in the vicinity of Lafayette, Ind. The primary trunk valley of that system, the Teays Valley of traditional terminology, is composed of an eastern part, the Marion Valley Section (new name), and a western part, the Mahomet Valley Section(modified name). The Lafayette system includes shallow, high-level inset valleys, such as those presently trapped atop rock sills along the modern Maumee-Wabash Trough. This valley system probably never existed in its present form at any point in time. The stratigraphy of the valley fill indicates that parts of the system were filled at different times, and therefore they may have been connected as drainage routes in a variety of configurations at different times. The conceptually defined drainage systems that followed such routes include a system that followed the Marion and Mahomet Valley Sections (assumed to be the classic Teays drainage) and other systems that my have followed the Metea and Mahomet Valley Sections (modified names) or any of several other possible bedrock-valley routes.
Bleuer, N. K., 1989, Historical and geomorphic concepts of the Lafayette bedrock valley system (so-called Teays Valley) in Indiana: Indiana Geological Survey Special Report 46, 11 p., 2 pls. doi: 10.5967/csde-t993
You may also like:
Keywords: Teays Valley, geomorphology
Can't find what you're looking for? Feel free to contact us directly:
Indiana Geological and Water Survey
1001 E. 10th St.
Bloomington, IN 47405
IGS Return Policy
- Original sales receipt required.
- Returns accepted within 30 days of purchase date.
- Refund will be issued by the same method of payment as purchased.
- Products must be returned in the same new condition as purchased.
- Refunds on custom orders and digital products are NOT allowed.
- Customers are responsible for paying shipping costs to return products.