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wwh - Correct again - the presence of that much iridium is a sure indicator of asteroid impact. As mentioned in the previous post however, the impact was during an event of tumultuous vulcanism. The Ir rich layer occurs in the midst of a huge thickness of basalt flows, indicating it was not the cause of the vulcanism. Courtillot postulates that the material released into the atmosphere during the volcanic event exceeded that of the impact.
stales
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Glacier Girl
wwh 01/15/02 10:23 PM ![]()
Re: Glacier Girl
stales 01/16/02 02:26 AM ![]()
Re: Glacier Girl
wwh 01/16/02 03:31 AM ![]()
A Piece of 8
stales 01/16/02 04:33 AM ![]()
Re: Glacier Girl
Jackie 01/16/02 12:05 PM ![]()
Re: Glacier Girl
wwh 01/16/02 04:12 PM ![]()
Re: Glacier Girl
stales 01/16/02 04:23 PM ![]()
Speaking of "chimneying"...
Sparteye 01/16/02 04:57 PM ![]()
Re: Glacier Girl
Capital Kiwi 01/16/02 06:41 PM ![]()
Re: Glacier Girl
Capital Kiwi 01/16/02 06:55 PM ![]()
Re: Glacier Girl
wwh 01/16/02 09:06 PM ![]()
Re: Glacier Girl
Jackie 01/17/02 12:04 PM ![]()
Re: Glacier Girl
Capital Kiwi 01/17/02 12:50 PM ![]()
Re: Glacier Girl
wwh 01/17/02 02:11 PM ![]()
Re: Glacier Girl
Jackie 01/17/02 05:51 PM ![]()
Shafted
stales 01/18/02 04:40 AM ![]()
For stales...
doc_comfort 01/18/02 04:45 AM ![]()
Re: For stales...
stales 01/18/02 06:33 AM ![]()
Re: For stales...
wwh 01/18/02 02:41 PM ![]()
Re: For stales...
stales 01/18/02 04:42 PM ![]()
Re: For stales...
wwh 01/18/02 05:37 PM ![]()
Iridium at the KT Boundary
stales 01/20/02 10:17 AM ![]()
Re: For stales...
Keiva 01/18/02 06:49 PM ![]()
Vincent
stales 01/18/02 05:08 AM
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