Talk:Kebira Crater

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maps[edit]

added a google maps view. Someone could also add a .kmx file for google earth. Santaduck 04:37, 7 March 2006 (UTC)

location[edit]

Should there be a correction the location and or the stub type (or the addition of a Libya stub?) Despite the news reports, the center of the crater seems to be on the Libyan side of the border, although the eastern edge of the crater does edge into Egypt. Santaduck 04:39, 7 March 2006 (UTC)

I have changed to {{AfricaN-geo-stub}} (we don't seem to have a {{libya-geo-stub}}).
I'm not sure why the press release says is more than twice the size of the next largest crater in the Sahara, in Chad. There are two in Chad - Aorounga crater (12.6 km) and Gweni-Fada crater (14 km) - but the Oasis crater in Libya seems to be much near this one, and larger. See Earth Impact Database.
Should the "crater" in the name be capitalised or lower case? -- ALoan (Talk) 14:45, 7 March 2006 (UTC)
Looking at the List of impact craters on Earth, some craters are capitalized and some are not. It seems to depend on whether "crater" is part of the name of the place (e.g. Meteor Crater, Chicxulub Crater), or whether it's just a crater with a name. I originally moved this article to the lowercase "crater" but someone moved it back saying it was a proper noun. If kebira means "large", which is an adjective that requires a noun, maybe it does make more sense to capitalize the C as part of the name. bcasterlinetalk 15:13, 7 March 2006 (UTC)


Not a confirmed impact crater (... or rather confirmed NOT an impact crater)[edit]

I changed this article a bit to make it clear that this thing is not a confirmed impact crater. Note the cautious wording in the first sentence of the original press release: “….which may have been formed by a meteorite impact…”. Unfortunately, many of the media stories that sprang out of the release missed the point that this is just a speculation based on remotely sensed data. As far as I’m aware the site hasn’t been investigated on the ground by El-Baz’s group, which is essential for confirmation. Some Italian scientists that have visited the area said they saw no evidence of impact near Kebira, but admit it does warrant further in situ investigations (PDF).

The press release later says: “The reason why a crater this big had never been found before is something the scientists are speculating.” My guess is that crater hunting geologists probably have spotted it before, but have been cautious in the absence of field data. There are lots of circular features in the general area, and some of these have previously been suggested as impact craters, but this now appear to be incorrect (see the PDF linked above). However, the nearby Oasis and BP impact structures are well documented.

BTW, this is not the first time El-Baz has reported potential impact craters in the area. In 1981 he reported a crater (Google Maps) 150 km ESE of Kebira, that he said had “…characteristics … similar to those of meteorite impact craters…” (Abstract). It turned out to be a volcano and is now called El-Baz volcanic crater. PeterWH 09:45, 3 January 2007 (UTC)

I have visited the structure soon after it was announced in 2006, and have found no evidence whatsoever of an impact origin, much more to the contrary. The 'central uplift' is clearly an eroded part of the surroundng sandstone tableland, showing clear and uninterrupted horizontal bedding structure throughout. The circular pattern is just a chance result of fluvial erosion. Note that di Martino et al. (PDF) did not visit this area, but the other 'crater field' reported by Pailleu et al. to the East of the Gilf Kebir. Libyansands (talk) 19:25, 20 October 2013 (UTC)

Given the general lack of any evidence for it being a "crater" of any sort, maybe the name of this article should be changed to something more generic, i.e. "Kebira feature," and convert the original "Kebira Crater" article into a a redirect because that is what this feature is known as. At this time, it quite misleading to people have the article remain as the "Kebira Crater." In my opinion, there is not even enough substance to it to call it a "structure." Paul H. (talk) 21:05, 20 October 2013 (UTC)

Images[edit]

There are a series of Flickr images of this area that are CC - By tagged (and thus good for upload to commons). One in particular seems to show this crater. If any one can identify it, this should be uploaded and used here: http://www.flickr.com/photos/98489045@N00/388092005/in/set-72157594548627625/ T L Miles (talk) 02:46, 29 September 2008 (UTC)