Re: [Geology2] Earthquakes generate big heat in super-small areas

On 10/14/2011 09:02 AM, Lin Kerns wrote:

> Earthquakes generate big heat in super-small areas: study
>
> October 13, 2011 Earthquakes generate big heat in
> super-small areas
(snip)

We have lots of exposed Greenstone rock exposed in the Blue
Ridge, in Virginia, that shows slickensides at fault
surfaces. This is usually a paper-thin, slick surface where
the rock has obviously melted and re solidified, very
quickly, because the surface is glassy, not grainy. It
never occurred to me that these surfaces were anything but
the result of a flash melt process. Definitely not a polish
process, where only wear is involved.

--
Regards,

John Popelish

------------------------------------

Yahoo! Groups Links

<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/geology2/

<*> Your email settings:
Individual Email | Traditional

<*> To change settings online go to:
http://groups.yahoo.com/group/geology2/join
(Yahoo! ID required)

<*> To change settings via email:
geology2-digest@yahoogroups.com
geology2-fullfeatured@yahoogroups.com

<*> To unsubscribe from this group, send an email to:
geology2-unsubscribe@yahoogroups.com

<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/