File:Raven Ridge, Colorado.jpg

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Summary

DescriptionRaven Ridge, Colorado.jpg	English: Cretaceous–Paleogene boundary at Raven Ridge in NW Colorado Astronaut photograph ISS018-E-11127 was acquired on December 6, 2008, with a Nikon D2Xs digital camera fitted with an 800 mm lens, and is provided by the ISS Crew Earth Observations experiment and Image Science & Analysis Laboratory, Johnson Space Center. It should be noted that the K-T boundary here is represented by an erosional unconformity along Raven Ridge and rocks immediately below, above and containing the K-T boundary are not present. USGS Geologic Quadrangle Map, Banty Point Quadrangle, Colorado GQ-703.
Date	6 December 2008
Source	http://earthobservatory.nasa.gov/IOTD/view.php?id=36504
Author	NASA

Licensing

	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

Original upload log

The original description page was here. All following user names refer to en.wikipedia.

Date/Time	Dimensions	User	Comment
2011-12-22 02:32	720×480× (160971 bytes)	Tillman	New version by Nasa, see file talk page. K-T boundary removed from photo
2009-01-15 00:42	720×480× (156522 bytes)	Tillman	[[K-T Boundary]] at Raven Ridge in NW Colorado Astronaut photograph ISS018-E-11127 was acquired on December 6, 2008, with a Nikon D2Xs digital camera fitted with an 800 mm lens, and is provided by the ISS Crew Earth Observations experiment and Image Scie

File history

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	Date/Time	Dimensions	User	Comment
current	05:17, 21 February 2018	1,440 × 960 (712 KB)	Cmuelle8	higher resolution version, source: https://eoimages.gsfc.nasa.gov/images/imagerecords/36000/36504/ISS018-E-11127_lrg.jpg
	02:44, 4 August 2014	720 × 480 (157 KB)	OgreBot	(BOT): Reverting to most recent version before archival
	02:44, 4 August 2014	720 × 480 (153 KB)	OgreBot	(BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2009-01-15 00:42:53 by Tillman
	03:11, 1 August 2014	720 × 480 (157 KB)	Innotata	Transferred from en.wikipedia