Asteroid Impacts May Have Triggered Plate Tectonics

Paul bristolia at yahoo.com
Wed Jan 16 13:05:19 EST 2008

Meteor Pelting May Have Triggered Plate Tectonics
Larry O'Hanlon, Discovery News

http://dsc.discovery.com/news/2007/12/10/meteors-earth.html
http://dsc.discovery.com/news/2007/12/10/meteors-earth-print.html

Hansen , V. L., 2007, Subduction origin on early Earth: A hypothesis.
Geology. vol. 35, no. 12, pp. 1059–1062

http://www.gsajournals.org/perlserv/?request=get-abstract&doi=10.1130%2FG24202A.1

Yours,

Paul H.

Article About Firestone’s Hypotheses Published in “GSA Today”

Paul bristolia at yahoo.com
Mon Jan 7 17:02:13 EST 2008

An article, which includes comments about Firestone’s terminal
Pleistocene impact and other hypotheses has been published in
“GSA Today”. It is:

Pinter, N., and S.E. Ishman, 2008, Impacts, mega-tsunami, and
other extraordinary claims. GSA Today. vol. 18, no. 1, pp. 37-38.

This article can be downloaded from:

http://www.gsajournals.org/archive/1052-5173/18/1/pdf/i1052-5173-18-1-37.p

and

http://www.gsajournals.org/perlserv/?request=get-document&doi=10.1130%2FGSAT01801GW.1

linked at:

http://www.gsajournals.org/perlserv/?request=index-html&issn=1052-5173

Yours,

Paul H.

Asteroid Impacts May Have Boosted Evolution

Paul bristolia at yahoo.com
Fri Jan 4 09:57:19 EST 2008

Asteroid Impacts May Have Boosted Evolution By Dave Mosher
December 18, 2007

http://www.foxnews.com/story/0,2933,317375,00.html

The article stated in part:

“Space rocks are blamed for a lot of rough times on Earth,
from the die-off of most marine animals some 250 million
years ago to the disappearance of the dinosaurs 65 million
years in the past.

A new theory, however, suggests that catastrophic meteorite
impacts are linked to an explosion in biodiversity about 470
million years ago, during the Ordovician Period.”

Yours,

Paul H