Talk:Verneshot

differences

At present the article is slightly off from the original model proposed by Phipps Morgan et al

The Chicxulub crater is consistent with such an event with the direction and low angle of impact. However, the velocity would be low compared to an extraterrestrial impactor, so the impactor would mostly survive and although it would be pulverised, it would not be vaporised. Finding rocks from Deccan in Mexico would validate this theory.

This while been partially correct seems to have missed the point, in the original scientific paper by Phipps Morgan et al, they concide that the Chicxulub crater and Deccan Traps are more than likely to be a massive coincidence and there is no serious suggestion that the crater might have resulted from a Verneshot event in Deccan.

• I removed the crater information completely, because I felt it confused the issue to much. I think that it would be beneficial for someone to cover what the Phipps Morgan 'et al' paper says about the relation between craters proposed to be linked to extinction events and the verneshot hypothesis, but I don't feel like I grasp it quite well enough to do it myself. 134.173.86.137 22:37, 5 May 2007 (UTC)

The impact events are associated with layers of extraterrestrial material, such as the iridium of the KT event. This would need to be present in earth's mantle and there is little evidence to support that.

Incorrect, as stated by the published article. Iridium anomalies have been recorded from a number of volcanic eruptions noteably in Reuinon and are consistent with Vapour rich eruptions from a mantle plume. The nature of why the Verneshot hypothesis has arisen (due to the dual signatures of Impact and Volcanism coincident with Mass extinction events) means that an Iridium anomaly needs to be produced by the Verneshot event. Iridium is stated by Phipps Morgan et al to be grained from the head of the rising mantle plume. ClimberDave 17:46, 20 March 2007 (UTC)

• I tried to convey this, but I'm not sure if I got it all right in my edit. 134.173.86.137 22:37, 5 May 2007 (UTC)

Edited the micro-verneshot event page with a bit more detail about the Tunguska event with references ClimberDave 11:29, 10 April 2007 (UTC)

VEI-10

would a Verneshot on the order of an extinction event trigger, be a VEI-10 supervolcano? 70.51.9.197 05:20, 13 August 2007 (UTC)

No. You just made up VEI-10. The scale goes up to 8. --LiamE 09:59, 13 August 2007 (UTC)

No, the scale is open-ended, with each number being a factor of ten greater. There just have been no single VEI-9 eruptions, let alone anything VEI-10. - Gilgamesh (talk) 23:07, 30 November 2008 (UTC)

External links modified

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