File:Berea Sandstone-Sunbury Shale contact (Tener Mountain roadcut, southern Ohio, USA) 9 (35055539733).jpg
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[edit]DescriptionBerea Sandstone-Sunbury Shale contact (Tener Mountain roadcut, southern Ohio, USA) 9 (35055539733).jpg |
Black shale over quartzose sandstone in the Paleozoic of Ohio, USA. This outcrop in southern Ohio exposes the Sunbury Shale-Berea Sandstone contact. The Sunbury Shale is a black mudshale succession - it is the oldest fully Mississippian-aged unit in the state. It occurs above the Berea Sandstone and below the Cuyahoga Formation. The Sunbury essentially identical to the older Ohio Shale. Compared with the Ohio Shale, the Sunbury is considerably thinner. Sunbury outcrops are uncommon, but an extensive exposure is present at the Tener Mountain roadcut in southern Ohio. The unweathered rocks are black mudshales, but weathered material consists of medium- to light-colored chips. I have not observed fossils in the Sunbury at this site, but the literature refers to lingulid brachiopod fragments in the lower Sunbury. The light-colored rocks in the lower half of the photo (mostly covered with Sunbury talus chips) are the uppermost Berea Sandstone. This unit caps a coarsening-upward succession that starts with the Olentangy Shale, followed by the Ohio Shale, the Bedford Shale, and the Berea Sandstone. The Ohio Shale and Bedford Shale are Famennian in age (= upper Upper Devonian). Traditionally, the Bedford and the Berea have been considered as Lower Mississippian. The Berea is now known to be Famennian (~latest Devonian), based on palynomorph microfossils. The Devonian-Mississippian boundary may lie within the Berea Sandstone. A Kinderhookian-aged conulariid has been found in the basal part of the overlying Sunbury Shale. Stratigraphy: Sunbury Shale, Kinderhookian Stage, lower Lower Mississippian over Berea Sandstone, upper Famennian Stage to lower Kinderhookian Stage (?), upper Upper Devonian to lower Lower Mississippian (?) Locality: Tener Mountain roadcut along the northwestern side of Rt. 32 (= Appalachian Highway), a little northeast of the Rt. 32-Union Hill Road intersection & just northeast of the Adams County-Pike County line, far-southwestern Pike County, southern Ohio, USA (39° 01' 29.06" North latitude, 83° 16' 23.42" West longitude) |
Date | |
Source | Berea Sandstone-Sunbury Shale contact (Tener Mountain roadcut, southern Ohio, USA) 9 |
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@N05/35055539733. It was reviewed on 6 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
6 December 2019
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current | 02:45, 6 December 2019 | 4,000 × 3,000 (5.4 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/250 sec (0.004) |
F-number | f/9 |
ISO speed rating | 80 |
Date and time of data generation | 10:39, 9 July 2017 |
Lens focal length | 8.295 mm |
Image title | |
Width | 4,000 px |
Height | 3,000 px |
Bits per component |
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Pixel composition | RGB |
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 | 17:06, 11 July 2017 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 10:39, 9 July 2017 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 7.96875 |
APEX aperture | 6.34375 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 3.34375 APEX (f/3.19) |
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Flash | Flash did not fire, compulsory flash suppression |
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Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
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 | 13:06, 11 July 2017 |
Unique ID of original document | A77054C691A0A5261A95013A29F475AE |