File:Geode (lower Warsaw Formation, Lower Mississippian; Warsaw, Hancock County, Illinois, USA) (41598898692).jpg
_(41598898692).jpg){kind=link}
_(41598898692).jpg&action=edit&redlink=1){kind=link}
Size of this preview: 678 × 599 pixels. Other resolutions: 272 × 240 pixels | 543 × 480 pixels | 869 × 768 pixels | 1,159 × 1,024 pixels | 1,816 × 1,605 pixels.
Original file (1,816 × 1,605 pixels, file size: 2.14 MB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
_(41598898692).jpg){kind=link}
Summary
| Description |
Quartz geode from the Mississippian of Illinois, USA. (public display, Geology Department, Wittenberg University, Springfield, Ohio, USA) Geodes are small to large, subspherical to irregularly-shaped, crystal-lined cavities in rocks. They form when water enters a void in a host rock and precipitates crystals. The most common geode-lining mineral is quartz, as in this Illinois example. Stratigraphy: derived from dolostone or dolomitic limestone of the lower member of the Warsaw Formation, Osagean Stage, upper Lower Mississippian Locality: unrecorded/undisclosed site at or near Warsaw, far-western Hancock County, far-western Illinois, USA |
| Date | |
| Source | Geode (lower Warsaw Formation, Lower Mississippian; Warsaw, Hancock County, Illinois, USA) |
| Author | James St. John |
Licensing
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
- 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@N05/41598898692. It was reviewed on 5 December 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 | 02:07, 5 December 2019 | | 1,816 × 1,605 (2.14 MB) | Ser Amantio di Nicolao | Transferred from Flickr via #flickr2commons |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
_(41598898692).jpg){kind=link}