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GMS Field Trip
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Shattercones
GMS Field Trip
Meteorite Impact Crater in Tennessee
Friday, May 22, 2015
The first stop on the epic field trip was an impact crater in Tennessee. The site is a very, very old impact crater. The meteorite struck with such force that the bedrock has a distinctive fracture pattern. Sometimes the fractures result in a cone which is referred to as a “shatter cone”. A limited group got to collect shatter cones at ground zero. The shatter pattern is omnipresent in the dolostone there, and with a little work we were extracting some excellent cones, including some 360 degree specimens, plus Walt Kubilius extracted a positive and it’s negative. It was a great way to begin the epic trip.
Lori Carter
On behalf of Charles Carter, GMS Field Trip Chair
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Click here for more information about the May 2015 epic trip
Click here for the March 2014 trip report
Click here for the July 2013 trip report
Click here for the March 2013 trip report
To purchase a copy of the GMS shatter cone coloring book on Amazon, please click below
(Note: All proceeds above cost will be used to further education in Earth Sciences
and to support the educational efforts of the Georgia Mineral Society)
(Note: All proceeds above cost will be used to further education in Earth Sciences
and to support the educational efforts of the Georgia Mineral Society)
Photo by Lori Carter
Classic shatter pattern
Photo by Lori Carter
One of the first shatter cones found that day
Photo by Lori Carter
Another good example of shatter pattern
Photo by Lori Carter
A nice little specimen with a couple of cones
Photo by Lori Carter
This cone was weathering out of a large boulder
Photo by Lori Carter
Walt Kubilius whacked a rock and liberated this cone plus...
...this negative of the cone!
Photo by Lori Carter
Morrison extracted this superb cone in cone specimen
Photo by Lori Carter
Another view of Morrison's cone in cone
Photo by Lori Carter
Nice little cone
Photo by Lori Carter
Walt and Kathleen looking for shatter cones
Photo by Lori Carter
Excellent multi-cone specimen
Photo by Lori Carter
Two cones together
Photo by Lori Carter
Another shatter cone...
Photo by Lori Carter
...and another
Photo by Lori Carter
Perry Curl, Chris Thompson, and Charles Carter taking a break
Photo by Lori Carter
One of the shatter cones Chris found
Photo by Lori Carter
What's all the fuss about those pointy rocks?
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