File:Winneshiek Shale dam & outcrops.png
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[edit]DescriptionWinneshiek Shale dam & outcrops.png |
English: The Winneshiek Shale. (a–c) Damming and extraction of the Winneshiek Shale from the bed of the Upper Iowa River. (d) Field exposure showing the laminated nature of the Winneshiek Shale. (e) Fractured and deformed Shakopee Formation dolomite just outside the SE rim of the Decorah structure with H. Paul Liu for scale. Photo credits: (a) H.P. Liu; (b, c) Tom Marshall (South Dakota Geological Survey); (d) R.M. McKay; and (e) from French et al. (2018). |
Date | |
Source | The Winneshiek biota: exceptionally well-preserved fossils in a Middle Ordovician impact crater. Journal of the Geological Society (2018) 175 (6): 865–874. https://doi.org/10.1144/jgs2018-101 |
Author | Derek E.G. Briggs; Huaibao P. Liu; Robert M. McKay; Brian J. Witzke |
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current | 22:51, 20 December 2020 | 1,975 × 1,581 (8.06 MB) | NGPezz (talk | contribs) | Uploaded a work by Derek E.G. Briggs; Huaibao P. Liu; Robert M. McKay; Brian J. Witzke from The Winneshiek biota: exceptionally well-preserved fossils in a Middle Ordovician impact crater. ''Journal of the Geological Society'' (2018) '''175''' (6): 865–874. https://doi.org/10.1144/jgs2018-101 with UploadWizard |
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