File:Dundee Limestone over Lucas Dolomite (Middle Devonian; Auglaize Quarry, near Junction, Ohio, USA) 4 (48889181752).jpg
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Limestones and dolostones in the Devonian of Ohio, USA. This is the active wall at a functioning quarry in far-northwestern Ohio. We were forbidden from closely approaching the walls. Large, loose blocks of rock were piled on the quarry floor for close examination and mineral collecting. The gray-colored rocks in the top third of the wall are the Dundee Limestone, a Middle Devonian unit equivalent to the upper Columbus Limestone and Delaware Limestone elsewhere in Ohio. At this site, the Dundee is principally light gray to gray-brown micrite and dismicrite. These lithologies are sometimes referred to as lithographic limestone and sublithographic limestone. Stylolites are present, as are numerous patches of coarsely-crystalline calcite. The brownish-colored rocks in the middle and lower walls are the Lucas Dolomite of the upper Detroit River Group. The Lucas appears to consist of dolostone and limestone. Finely-laminated, brown dolostone is a common lithology in this unit. Lack of stratigraphic control in the loose quarry blocks makes specific lithologic assessments difficult. Stylolites are also present in the Lucas. Stratigraphy: Dundee Limestone over Lucas Dolomite, Middle Devonian Locality: Auglaize Quarry (= Shelly Company, Stoneco's Auglaize Facility), southeast of the town of Junction, northeastern Paulding County, northwestern Ohio, USA (41° 10' 27.83" North latitude, 84° 25' 19.75" West longitude) |
| Date | |
| Source | Dundee Limestone over Lucas Dolomite (Middle Devonian; Auglaize Quarry, near Junction, Ohio, USA) 4 |
| Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/48889181752 (archive). It was reviewed on 18 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:51, 18 October 2019 | | 4,000 × 2,923 (7.43 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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