File:Lower Mercer Limestone-Middle Mercer Coal (Middle Pennsylvanian; Rock Cut, Muskingum County, Ohio, USA) (37088933160).jpg
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Summary
[edit]DescriptionLower Mercer Limestone-Middle Mercer Coal (Middle Pennsylvanian; Rock Cut, Muskingum County, Ohio, USA) (37088933160).jpg |
The Pottsville Group is a Pennsylvanian-aged cyclothemic succession containing nonmarine shales, marine shales, siltstones, sandstones, coals, marine limestones, and chert ("flint"). The lower Pottsville dates to the late Early Pennsylvanian. The upper part dates to the early Middle Pennsylvanian. The Lower-Middle Pennsylvanian boundary is apparently somewhere near the Boggs Limestone horizon (?). The gray unit in the top half of the photo is the Lower Mercer Limestone, a Middle Pennsylvanian-aged, laterally persistent, marine fossiliferous limestone unit in the Pottsville Group of eastern Ohio, USA. It is richly fossiliferous, principally dominated by brachiopods and crinoid stems. The relatively thin horizon below the Lower Mercer Limestone (in the ~middle of the picture) is the Middle Mercer Coal. It usually consists of bituminous coal, but in places at this locality, it is a cannel coal. Stratigraphy: Lower Mercer Limestone over Middle Mercer Coal, Pottsville Group, lower Atokan Stage, lower Middle Pennsylvanian Locality: Rock Cut railroad cut - outcrop along the southern side of Ohio Central Railroad tracks (west of milepost 134), ~southwest of Copeland Island & south-southeast of the town of Dresden, northern Muskingum County, eastern Ohio, USA (~vicinity of 40° 04’ 24.41” North latitude, ~81° 59’ 11.25” West longitude) |
Date | |
Source | Lower Mercer Limestone-Middle Mercer Coal (Middle Pennsylvanian; Rock Cut, Muskingum County, Ohio, USA) |
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@N05/37088933160 (archive). It was reviewed on 8 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
8 October 2019
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current | 12:07, 8 October 2019 | 4,000 × 3,000 (4.97 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 | 13:04, 15 April 2017 |
Lens focal length | 14.303 mm |
Width | 4,000 px |
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Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop Elements 13.0 (Macintosh) |
File change date and time | 23:33, 26 September 2017 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 13:04, 15 April 2017 |
Meaning of each component |
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APEX aperture | 4.34375 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 4.34375 APEX (f/4.51) |
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Flash | Flash did not fire, compulsory flash suppression |
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Focal plane resolution unit | inches |
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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 | 19:33, 26 September 2017 |
Unique ID of original document | 29F490284E9B113DEBCB8B2CE2C48760 |
IIM version | 18,755 |