File:Pyrite-filled burrow (?) in limestone (Boggs Limestone, Middle Pennsylvanian; ravine below Rt. 208, east of Dresden, Muskingum County, Ohio, USA) 1 (31289445671).jpg
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[edit]DescriptionPyrite-filled burrow (?) in limestone (Boggs Limestone, Middle Pennsylvanian; ravine below Rt. 208, east of Dresden, Muskingum County, Ohio, USA) 1 (31289445671).jpg |
Pyrite-filled burrow (?) in limestone in the Pennsylvanian of Ohio, USA. The Pottsville Group is a Pennsylvanian-aged cyclothemic succession in eastern Ohio that contains 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 Member (?). The Boggs Member is a relatively thin stratigraphic interval in the Pottsville Group. It typically consists of marine fossiliferous limestones, dominated by brachiopods and crinoid ossicles. Significant lateral and vertical lithologic variation is present - the Boggs interval ranges from being a fossiliferous limestone to an intraclastic limestone to a chert to a dolostone. In places, it has a relatively high component of disseminated pyrite. In other places, it is relatively rich in black manganese oxide(s). Minerals observed in the Boggs Limestone interval: calcite, dolomite, glauconite, goethite, gypsum, limonite, pyrite, sphalerite, turgite, vivianite, wad. This limestone has a slightly discolored structure (from near-upper left to the bottom of the photo) that is a possible trace fossil (burrow) (?). The filling is dominated by small, subrounded pyrite masses (click on the photo to zoom in and look around). Stratigraphy: Boggs Member, middle Pottsville Group, lower Atokan Stage, lower Middle Pennsylvanian Locality: ravine below the southern side of Rt. 208 (= Dresden-Adamsville Road), east of the town of Dresden, Madison Township, Muskingum County, eastern Ohio, USA (= locality of Stout, 1918, p. 74, lines 8-13) Reference cited: Stout (1918) - Geology of Muskingum County. Geological Survey of Ohio, Fourth Series Bulletin 21. 351 pp. |
Date | |
Source | Pyrite-filled burrow (?) in limestone (Boggs Limestone, Middle Pennsylvanian; ravine below Rt. 208, east of Dresden, Muskingum County, 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@N05/31289445671. It was reviewed on 24 June 2017 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
24 June 2017
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current | 17:25, 24 June 2017 | 3,219 × 2,658 (3.97 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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Date and time of data generation | 10:01, 28 March 2015 |
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Horizontal resolution | 180 dpi |
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File change date and time | 23:21, 3 December 2016 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 10:01, 28 March 2015 |
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APEX aperture | 3.34375 |
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Digital zoom ratio | 1 |
Scene capture type | Portrait |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 18:21, 3 December 2016 |
Unique ID of original document | 4A62B3E9276B0ED4E5ECE5EB7B4B76FF |