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Sunday, 15 February 2009

Recently Published Papers on Impact Structures and Impactites

Recently Published Papers on Impact Structures and Impactites

Sun Feb 15 23:11:48 EST 2009

Dear Friends,

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

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.

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.

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

"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

He hypothesizes that "carbonado does stem from terrestrial
eruptive processes" and concludes that much research remains
to be performed before any conclusions can be reached.

5. Schmieder, M., and E. Buchner, 2007, Short note: The Faya
basin (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."



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