File:Fossiliferous "ocherous earth" limestone (Maxville Limestone, Mississippian; County Road 49 roadcut southwest of Blissfield, Ohio, USA) 1 (27187344451).jpg
Original file (3,090 × 2,546 pixels, file size: 4.44 MB, MIME type: image/jpeg)
Captions
Captions
Summary
[edit]_1_(27187344451).jpg&action=edit§ion=1){kind=link}
| Description |
Extremely weathered fossiliferous limestone in the Mississippian of Ohio, USA. The Maxville Limestone is the only Middle to Late Mississippian-aged stratigraphic unit in Ohio. Its outcrop belt is not extensive - it principally occurs in Muskingum County and Perry County in eastern and southeastern Ohio. The Maxville Formation can also be found as cobbles and pebbles in the basal Sharon Formation (Lower Pennsylvanian), which disconformably overlies Ohio's Mississippian rocks. Paleohills, or erosional outliers, of Maxville Limestone have also been identified. The formation principally consists of fine-grained limestones and fossiliferous limestones. The small fossiliferous rock sample shown above is from a Maxville Limestone outlier in northwestern Coshocton County, in northeastern Ohio. The fossil is a fenestrate bryozoan. The host rock is extremely weathered limestone - it seems like massive limonite, but it still bubbles in acid. The early literature (see Lamb, 1916, p. 153, paragraphs 1-3) refers to this lithology as "ocherous earth". I'm not sure how to describe this in modern terminology, so it's being referred to here as fossiliferous "ocherous earth" limestone. Based on outcrop and float samples, the Maxville Limestone at this site is extremely weathered, reddish (hematitic) and dirty yellowish (limonitic), and is fossiliferous in part with fossil vugs and molds of fenestrate bryozoans and brachiopods. Burrows (trace fossils) are present with small, black manganese oxide dendrites defining the burrow-matrix contact. Burrow fills are finer-grained and paler colored than the matrix. Some small vugs were observed that were filled with tiny white calcite crystals + black spots of probable manganese oxide. Some samples have glauconite. Stratigraphy: Maxville Limestone, Meramecian Series to Chesterian Series, Middle to Upper Mississippian Locality: almost completely covered hilltop roadcut on the western side of County Road 49, southwest of the town of Blissfield, southwestern Clark Township, northwestern Coshocton County, northeastern Ohio, USA (40° 23' 25.66" North latitude, 81° 58' 57.05" West longitude) Reference cited: Lamb, G.F. 1916. Outliers of the Maxville Limestone in Ohio north of the Licking River. Ohio Journal of Science 16: 151-154. |
| Date | |
| Source | Fossiliferous "ocherous earth" limestone (Maxville Limestone, Mississippian; County Road 49 roadcut southwest of Blissfield, Ohio, USA) 1 |
| Author | James St. John |
Licensing
[edit]_1_(27187344451).jpg&action=edit§ion=2){kind=link}
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
|
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/27187344451 (archive). It was reviewed on 13 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:03, 13 October 2019 | | 3,090 × 2,546 (4.44 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
_1_(27187344451).jpg&oldid=886789922){kind=link}