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World's third largest asteroid impact zone found in South Australia
Phys.org ^
| February 15, 2013
| by Sunanda Creagh
Posted on 02/15/2013 10:36:13 AM PST by Red Badger
click here to read article
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To: gleeaikin
...give or take a million or two years.......
21
posted on
02/18/2013 6:44:23 AM PST
by
Red Badger
(Lincoln freed the slaves. Obama just got them ALL back......................)
To: Elle Bee
...that's actually the begining of a Tom Clancy novel ... I can't remember which just now Debt of Honor?
22
posted on
02/18/2013 7:03:04 AM PST
by
Ditto
To: Elle Bee
...that's actually the begining of a Tom Clancy novel ... I can't remember which just now Debt of Honor?
23
posted on
02/18/2013 7:03:17 AM PST
by
Ditto
To: SunkenCiv; Red Badger; neverdem; blam; All
I knew that Cambrian was older, so decided to go to Wiki. It has an excellent graphic for earth history buffs. Unfortunately the graphic refused to print here, so below is the link. Maybe someone else knows how to make it print, it is a beauty. It shows that 360 mya was at the end of the Devonian and start of the Carboniferous. So that meteor strike probably did cause the significant break between these two.
http://en.wikipedia.org/wiki/Geologic_time_scale
To: Ditto; Elle Bee
"Debt of Honor? "Yes.
That is correct.
25
posted on
02/23/2013 7:53:42 AM PST
by
blam
To: gleeaikin
26
posted on
02/25/2013 6:16:52 AM PST
by
Red Badger
(Lincoln freed the slaves. Obama just got them ALL back......................)
To: Red Badger
Thanks, this is beautiful, but I was hoping for the one with three rows that allows very clear identifying of dates, and lists the Periods and Epochs.
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