File:Gray limestone & brown dolostone (Dundee Limestone & Lucas Dolomite, Middle Devonian; Auglaize Quarry, near Junction, Ohio, USA) 1 (48889071241).jpg
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Limestones and dolostones in the Devonian of Ohio, USA. This is an active 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. Many of the gray-colored rocks are from the 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 are from the Lucas Dolomite of the upper Detroit River Group. The Lucas appears to consist of both 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 & 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 | Gray limestone & brown dolostone (Dundee Limestone & Lucas Dolomite, Middle Devonian; Auglaize Quarry, near Junction, Ohio, USA) 1 |
| 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@N05/48889071241 (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 | 02:52, 18 October 2019 | | 4,000 × 2,720 (8.01 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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