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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
Entire Thread Subject Posted By Posted 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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