Preliminary report on the Oldenburg “butter shale” in the Upper Ordovician (Katian; Richmondian) Waynesville Formation, USA
The Cincinnatian Series (Upper Ordovician; upper Katian) of the Cincinnati Arch region, Ohio, Indiana and Kentucky) contains several bed packages informally referred to as “butter shales” or “trilobite shales”. These packages are typically 1–2 m of relatively pure, homogeneous claystone with isolate...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Estonian Academy Publishers
2015-02-01
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| Series: | Estonian Journal of Earth Sciences |
| Subjects: | |
| Online Access: | http://www.kirj.ee/public/Estonian_Journal_of_Earth_Sciences/2015/issue_1/earth-2015-1-3-7.pdf |