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Re: Mega eruption may have wiped out [Cambrian] life

I meant to answer this, but maybe I didn't.

How does this fit in terms of time to the theory that the Siberian basalt flood eruption caused the end Permian extinction?

I know I just got the film, "The Day the Earth Nearly Died". They apparently know to within a short period when the end Cambrian extinction happened; they've got it neatly mapped.

How do they know when the Siberian Traps happened?

Were the two events close together in time?

It does look like two events caused the end-Cretaceous extinction.

Dora Smith
Austin, TX
----- Original Message ----- From: "Dann Pigdon" <dannj@alphalink.com.au>
To: "DML" <dinosaur@usc.edu>
Sent: Monday, June 26, 2006 9:59 PM
Subject: Mega eruption may have wiped out [Cambrian] life


Mega eruption may have wiped out life
Larry O'Hanlon, Discovery News, Monday, 26 June 2006

Scattered rafts of black lava over northern and central Australia are really part of one gigantic volcanic field that appears to be one of oldest and largest on Earth, geologists believe.

If so, the half billion year old eruption might be the culprit in the first mass animal extinction event in the history of life.

Australian geologists used the chemical signatures of the far-flung basalt lava rocks and their ages to connect them to a single huge volcanic eruptive episode between 505 and 508 million years ago...


Dann Pigdon
GIS / Archaeologist         http://heretichides.soffiles.com
Melbourne, Australia        http://www.geocities.com/dannsdinosaurs

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