File:Dundee Limestone over Lucas Dolomite (Middle Devonian; Auglaize Quarry, near Junction, Ohio, USA) 3 (48888468143).jpg
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[edit]DescriptionDundee Limestone over Lucas Dolomite (Middle Devonian; Auglaize Quarry, near Junction, Ohio, USA) 3 (48888468143).jpg |
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) 3 |
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@N05/48888468143 (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. |
18 October 2019
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current | 02:51, 18 October 2019 | ![]() | 4,000 × 2,567 (7.26 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Camera manufacturer | Canon |
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ISO speed rating | 80 |
Date and time of data generation | 05:52, 14 September 2019 |
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Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop Elements 16.0 (Macintosh) |
File change date and time | 00:45, 13 October 2019 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 05:52, 14 September 2019 |
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APEX aperture | 3.625 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 3.625 APEX (f/3.51) |
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File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Landscape |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 20:45, 12 October 2019 |
Unique ID of original document | 71002D6A8E28C15EC7B725AFBDFE495C |