[meteorite-list] Middle Stone Age Impact Identified in Western Desert, Egypt

[Paul]

Some archeologists and geologists have published research about
a Middle Stone Age meteorite impact, which occurred in the Western
Desert of Egypt.

Haldemann, A.F.C., M.R. Kleindienst, C.S. Churcher, J.R. Smith, H.P. 
Schwarcz, K. Markham, and G. Osinski, 2005, [17.03] Mapping 
Impact Modified Sediments: Subtle Remote-Sensing Signatures of 
the Dakhleh Oasis Catastrophic Event, Western Desert, Egypt. 
Session 17 Dust, Impacts and Earth Atmosphere, 37th AAS Division 
for Planetary Sciences Meeting, 31st AAS Historical Astronomy 
Division Meeting and  the Royal Astronomical Society, 4-9 
September 2005, University of Cambridge, UK.

http://www.aas.org/publications/baas/v37n3/dps2005/427.htm

"Ca-Al rich glass (Dakhleh Glass) points to a catastrophic event 
between c. 100,000 - 200,000 years ago in this well-studied 
African savannah and freshwater lake, Middle Stone Age 
environment."

++++

A.F.C. Haldemann, M.R. Kleindienst, C.S. Churcher, J.R. Smith, 
H.P. Schwarcz, and G. Osinski, 2005, Volatiles in the Desert: 
Subtle Remote-Sensing Signatures of the Dakhleh Oasis 
Catastrophic Event, Western Desert, Egypt. Role of Volatiles 
and Atmospheres on Martian Impact Craters 2005 Meeting, Lunar
and Planetary Institute, Houston, Texas. 

http://www.lpi.usra.edu/meetings/volatiles2005/pdf/3038.pdf

++++

Haldemann, A. F. C., M. R. Kleindienst, C. S. Churcher, J. R. Smith, 
H. P. Schwarcz and G. R. Osinski, 2005, Mapping impact modified 
sediments: subtle remote-sensing signatures of the Dakhleh Oasis 
Catastrophic Event, Western Desert, Egypt. The Sedimentary 
Record of Meteorite ImpactsMeeting , Society for Sedimentary 
Geology, Springfield, Missouri. 

http://geosciences.missouristate.edu/geology/SEPMRC/SEPMRC_program.pdf

"Bracketing by archaeological remains confirms the chronometric 
date obtained on the glass of 122,000 ± 40,000 yrs for the 
heating event--during the Middle Stone Age occupations of the 
oasis area"

Paul H.

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