File:Chalk badlands (Niobrara Formation, Upper Cretaceous; chalk bluffs south of Castle Rock, Gove County, Kansas, USA) 14 (39096383102).jpg
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Summary
DescriptionChalk badlands (Niobrara Formation, Upper Cretaceous; chalk bluffs south of Castle Rock, Gove County, Kansas, USA) 14 (39096383102).jpg |
Chalk in the Cretaceous of Kansas, USA. These are chalk outcrops near Castle Rock, a famous cluster of chalk pillars south of Quinter, Kansas. Chalk is a biogenic, calcitic, marine sedimentary rock composed of numerous coccolith microfossils (see: <a href="http://www.soes.soton.ac.uk/staff/tt/eh/pics/lith2.gif" rel="nofollow">www.soes.soton.ac.uk/staff/tt/eh/pics/lith2.gif</a>). Coccoliths are individual calcareous plates that covered a single-celled, photosynthesizing marine organism called a coccolithophorid (a.k.a. coccolithophore; "coccolithophorid" is not an adjective, contra Wikipedia) (see: <a href="https://upload.wikimedia.org/wikipedia/commons/d/d9/Emiliania_huxleyi_coccolithophore_(PLoS).png" rel="nofollow">upload.wikimedia.org/wikipedia/commons/d/d9/Emiliania_hux...</a>). Most chalks are Cretaceous in age ("creta" means "chalk"). The most famous example is the White Cliffs of Dover, along the southern shore of Britain. Weathered chalks in western Kansas range in color from white to pale yellowish to pale grayish. Stratigraphy: Smoky Hill Chalk Member (a.k.a. Smoky Hills Member), Niobrara Formation, Upper Cretaceous Locality: bluffs adjacent to Castle Rock, north of Gove County Road K & east of Castle Rock Road, 23 kilometers south-southeast of the town of Quinter, eastern Gove County, western Kansas, USA |
Date | |
Source | Chalk badlands (Niobrara Formation, Upper Cretaceous; chalk bluffs south of Castle Rock, Gove County, Kansas, USA) 14 |
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@N05/39096383102 (archive). It was reviewed on 12 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
12 October 2019
Items portrayed in this file
depicts
some value
13 June 2013
image/jpeg
0.003125 second
130 millimetre
200
594cb6bd6395a5d03f915029b2f8556cb34ceecd
6,371,608 byte
2,848 pixel
4,288 pixel
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:34, 12 October 2019 | 4,288 × 2,848 (6.08 MB) | Ser Amantio di Nicolao | Transferred from Flickr via #flickr2commons |
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Date and time of digitizing | 18:08, 13 June 2013 | |
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Scene capture type | Standard | |
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Date metadata was last modified | 21:07, 17 December 2017 | |
Unique ID of original document | B1EBD460A26F9B2F41622577058C8D9A | |
IIM version | 1 |