A COMPARISON OF OSAGE MARKER BEDS IN SOUTHWESTERN IOWA WITH THOSE OF THE SOUTHERN OZARKS

HAINES, Forrest, Adrian College, 14900 Wellwood Rd, Brooklyn, MI 49230, fhaines@adrian.edu

Osage marker beds are a valuable correlation tool. In a comparison of Iowa and the Ozarks marker beds give a detailed correlation - to the craton margin in Arkansas where the units thin and become cherty. Most marker beds are either oolite or crinoid grainstones, up to a meter thick, deposited during warm interglacial intervals on the craton. The silty partings formed during glacial lowstands with erosion of the inner craton.

Session No. 2

S1. Midcontinent Mississippian Surface and Subsurface Studies

Monday, 17 March 2014: 8:00 AM-12:00 PM

Eureka Springs Ballroom 1&2 (The Chancellor Hotel)

Geological Society of America Abstracts with Programs. Vol. 46, No. 1, p.3

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South-Central Section - 48th Annual Meeting (17–18 March 2014)

A COMPARISON OF OSAGE MARKER BEDS IN SOUTHWESTERN IOWA WITH THOSE OF THE SOUTHERN OZARKS