Recent Impact Papers Available 16FEB09

Below are some recent papers about impact structures and alleged impactites that have appeared.
1. Schmieder, M., E. Buchner, and D. P. LeHeron, 2009, The Jebel Hadid structure (Al Kufrah Basin ,SE Libya)—A possible impact structure and potential hydrocarbon trap? Marine and Petroleum Geology. vol 26. no. 3, pp. 310-318. doi:10.1016/j.marpetgeo.2008.04.003
http://dx.doi.org/10.1016/j.marpetgeo.2008.04.003

The Jebel Hadid structure is formed in the Nubian Sandstone and located in southern Al Kufrah Basin. It is a 4.7 km circular feature with a set of multiple concentric annular ridges. they suggest "that the Jebel Hadid structure might represent an eroded, complex impact structure' much like the Tin Bider structure in Algeria. Its location is 20º 52' N and 22º 42' E).

2. Ghoneim, E. M., 2008, Ibn-Batutah: A possible simple impact structure in southeastern Libya, a remote sensing study. Geomorphology. vol. 103, no. 3, pp. 341-350. The Ibn-Batutah feature is a circular structure centered on 21° 34′ 10″ N and 20° 50′ 15″ E and located in southeastern Libya. It is formed in Nubian Sandstone.
http://dx.doi.org/10.1016/j.geomorph.2008.07.005http://www.bu.edu/remotesensing/faculty/research/ghoneim/index.html

3. McCall, G. J. H., 2009, Half a century of progress in research on terrestrial impact structures: A review. Earth-Science Reviews.vol 92, no. 3-4, pp. 99-116.
http://dx.doi.org/10.1016/j.earscirev.2008.11.004

4. McCall, G. J. H., in press, The Carbonado diamond conundrum Earth-Science Reviews, In Press, Accepted Manuscript, Available online 13 February 2009. doi:10.1016/j.earscirev.2009.01.002
http://dx.doi.org/10.1016/j.earscirev.2009.01.002

"The reviewer presents the results of a literature search on the enigmatic occurrences of carbonado; a form (but not the only form) of polycrystalline diamond, which is mined for industrial diamonds." He hypothesizes that "carbonado does stem from terrestrial eruptive processes" and concludes that much research remainsto be performed before any conclusions can be reached.5. Schmieder, M., and E. Buchner, 2007, Short note: The Fayabasin (N Chad, Africa) – A possible impact structure? Journal of African Earth Sciences. vol. 47, pp. 62–68.The Faya basin is an almost circular structure, centered on 18º 10' N and 19º 34' E. It lies about 55 km ENE of the city of Faya (Largeau) and has a diameter of about 2 km.
"http://dx.doi.org/10.1016/j.jafrearsci.2006.11.004http://adsabs.harvard.edu/abs/2007JAfES..47...62S

Source: Paul V. Heinrich, Baton Rouge, LA, USA