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File:Silica Formation-Dundee Limestone-Anderson Limestone? (Benchmark Materials-France Stone Company Sylvania Quarry, Lucas County, Ohio, USA) 1 (48367295547).jpg

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This quarry near Toledo, Ohio targeted limestone for cement-making purposes. The gray shale-rich material at center-left is an overburden unit of Middle Devonian age called the Silica Formation (also known as the Silica Shale). The Silica Formation is richly fossiliferous with typical mid-Paleozoic marine invertebrates such as brachiopods, bryozoans, corals, crinoids, and trilobites. The limestone-rich unit below it (see the quarry highwall in the distance) is the Dundee Limestone (Middle Devonian). The Anderson Limestone is supposedly present below the Dundee in this quarry (I did not have this quarry's precise stratigraphy unambiguously pointed out to me).

Locality: Benchmark Materials-France Stone Company Sylvania Quarry (= Hanson Aggregates Midwest Incorporated Sylvania West Quarry; = Medusa South Quarry & Medusa South-South Quarry), north of Sylvania Avenue & south of Brint Road & west of Centennial Road, town of Sylvania, northwestern Lucas County, northwestern Ohio, USA (41° 41' 27.04" North latitude, 83° 44' 47.40" West longitude)

Locality info. at:

<a href="https://www.mindat.org/loc-294595.html" rel="noreferrer nofollow">www.mindat.org/loc-294595.html</a>
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Source Silica Formation-Dundee Limestone-Anderson Limestone? (Benchmark Materials-France Stone Company Sylvania Quarry, Lucas County, Ohio, USA) 1
Author James St. John

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/48367295547 (archive). It was reviewed on 7 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

7 December 2019

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current19:09, 7 December 2019Thumbnail for version as of 19:09, 7 December 20191,797 × 1,050 (2.87 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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