File:Calcrete paleosol (top of Cockburn Town Member, Grotto Beach Formation, Upper Pleistocene; inland roadcut, southeastern San Salvador Island, eastern Bahamas) 3 (15229618632).jpg
Original file (2,999 × 1,889 pixels, file size: 740 KB, MIME type: image/jpeg)
_3_(15229618632).jpg){kind=link}
Summary
| Description |
Calcrete paleosol (13 cm across) - calcretes are a common type of paleosol in San Salvador Island’s bedrock. Calcretes are lithified soil horizons, and are composed of calcium carbonate (CaCO3). Calcretes are (& were) hard as rock, but they are still soil horizons. Calcretes are extreme forms of pedocal soils, and are often developed on carbonate platform islands. This Late Pleistocene calcrete is developed above an aeolian calcarenite unit (a wind-deposited limestone composed of sand-sized calcareous grains). The upper surface of the calcrete has a somewhat smoothed nodular nature (see photo elsewhere in this album). The underside (shown here) has cemented lime sand, vegemorphs/rhizocretions, a pisolite, a fossil Tectarius snail shell, and three fossil Cerion land snail shells. Stratigraphy - paleosol capping eolian calcarenites at the top of the Cockburn Town Member, Grotto Beach Formation, Upper Pleistocene Locality: inland roadcut, southeastern San Salvador Island, eastern Bahamas |
| Date | |
| Source | Calcrete paleosol (top of Cockburn Town Member, Grotto Beach Formation, Upper Pleistocene; inland roadcut, southeastern San Salvador Island, eastern Bahamas) 3 |
| Author | James St. John |
Licensing
- 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 jsj1771 at https://www.flickr.com/photos/47445767@N05/15229618632. It was reviewed on 4 May 2015 by FlickreviewR 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 | 21:50, 3 May 2015 | | 2,999 × 1,889 (740 KB) | commons>Natuur12 | Transferred from Flickr via Flickr2Commons |
File usage
There are no pages that use this file.
_3_(15229618632).jpg){kind=link}