[meteorite-list] Source Stratum of Georgia Tektites Possibly Found

[Paul H]

The latest issue of Geology (Geological 
Society of America) has a paper about 
the identification of grains of shocked 
quartz in a sand bed within Upper Eocene 
strata of Georgia. The paper argued that 
they might be from the Chesapeake Bay 
Impact and occur within in the source 
layer for Georgia tektites.

The article is:

Duncan, M. S., Albin, E. F., Harris, R. S., 
Roden M. F., Schroeder, P. A., Holland, 
S. M. 2004, Upper Eocene impact horizon in 
east-central Georgia. Geology. vol. 32, 
no. 8, pp. 717-720.

http://www.gsajournals.org/gsaonline/?request=get-toc&issn=0091-7613&volume=32&issue=8

In part, the abstract stated:

"We report the discovery of shocked quartz 
grains in upper Eocene sediments from the 
Coastal Plain of east-central Georgia. ... 
These grains were collected from a sand 
layer near the base of the Twiggs Clay 
Member of the Dry Branch Formation and 
most likely are ejecta from the Chesapeake 
Bay impact, which occurred between 35.7 and 
36.0 Ma. ... This horizon could represent 
the source stratum for the Georgia tektites ..."

Yours,

Paul
Baton Rouge, LA



	
		
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