BH250-122wc
Title
BH250-122wc
Subject
Decorah Shale
Description
BH250-122wc is a sample collected from the Decorah Shale at Wangs Corner, Warsaw Township, Minnesota. This site is a regular destination for both introductory and upper-level geology students, offering a remarkable glimpse into one of the most fossiliferous outcrops in the Midwest. Despite recent access challenges involving the landowner, it remains an invaluable location for studying Upper Ordovician stratigraphy and fossil preservation.
The Decorah Shale directly overlies the Platteville Limestone and consists of fine-grained, greenish-gray shale interbedded with occasional carbonate lenses. The outcrop is rich in articulate brachiopods and bryozoans, disarticulated crinoid, gastropods, bivalves, cephalopods, rugose corals, and trilobites.
Sibo Wang, Class of 2010, conducted her senior comprehensive project at this site. Her research includes detailed documentation of the fossil assemblage and provides a valuable resource for future study.
The Decorah Shale directly overlies the Platteville Limestone and consists of fine-grained, greenish-gray shale interbedded with occasional carbonate lenses. The outcrop is rich in articulate brachiopods and bryozoans, disarticulated crinoid, gastropods, bivalves, cephalopods, rugose corals, and trilobites.
Sibo Wang, Class of 2010, conducted her senior comprehensive project at this site. Her research includes detailed documentation of the fossil assemblage and provides a valuable resource for future study.
Coverage
Location: Wangs Corner, Warsaw Township, Minnesota, USA
GPS Coordinates: 44.410464, -92.983144
GPS Coordinates: 44.410464, -92.983144
Creator
Bereket Haileab
Source
From the rock collection of Bereket Haileab. Sample BH250-122wc. Housed at Carleton College in Minnesota.
Type
Hand sample
Relation
Collection
Citation
Bereket Haileab, “BH250-122wc,” BH250 Mineralogy Teaching Collection, accessed April 25, 2026, https://bereket-haileab.geology.sites.carleton.edu/items/show/351.