Rotten eggstinction

Wade Whitlock, Aberdeen, MD — Wed, 22 Nov 2006 13:57:39 GMT

Back in the late 60's - early 70's Analog magazine had a couple of articles that calculated the effects of asteroidal impacts. Some of the effects from an oceanic impact (odds 3 out of 4)were tsunami, a column of superheated steam extending into the stratosphere (how long would it take to close a crater full of magma?) and a probable volcanic outburst at the antipode. Ahole punched through the crust would be super hot just from the kinetic energy and if the the crust were breached there would be magma surging in. The seismic waves would converge just about exactly 180 degrees around the earth. The sensation of being launched upward would be quite exhilerating - for a while! Questions: 1. What were the relative positions of Chixalub and the Deccan Traps (India)? 2. What were the relative positions of the Siberian Traps and Australia/Antarctic impact sites? Where do you want to be when 10 miles of assorted rock comes in at 40,000 mph? Answer: On Mars looking through a telescope!

Rotten eggstinction

Reilly Cruz — Wed, 22 Nov 2006 21:22:58 GMT

This is a wonderful article that is very educating and shows that there is more than just one theory as to why the dinsasours died!

Rotten eggstinction

Wayne Mims — Mon, 27 Nov 2006 16:21:55 GMT

I believe in Intelligent Design, but I also believe that we live on a planet that has a very dynamic ecosystem that has been around for a very long time. And no matter our differences in how we got here, I think it's time we all (the human race) start taking better care of our little spinning rock in space. Things like killer asteroids or comets are currently outside our control, but harmly gas emmissions are not. We are stewards of this great planet, whether by design or accident, and we need to own up to our responsbilities and do what we can to preserve all living species here on Earth.

Rotten eggstinction

Ronald Groninger, Fargo, ND — Fri, 08 Dec 2006 02:54:06 GMT

Why have we not taken seriously the impact of cosmic disasters on stratigraphy and geological dating? Clearly the erosion and sedimentation accompanying such events must have been enormous. It lends credence to the Native American stories that speak of whole mountain ranges being buried in a single day and new ones rising up.
Congratulations to Wade on very insightful comments. I would like to dialog with you if we could, and would like more information on your references, but isn't there anything more recent?
Cosmic impacts may also have some bearing on the mystery of short-life pleocroic radiation halos, particularly those of Polonium 210. But wouldn't this mess seriously with the whole radioactive dating scheme as well?

Rotten eggstinction

AvangionQ — Wed, 31 Oct 2007 06:03:45 GMT

I am currently researching the theory that an asteroid impact caused an antipodal uplift which caused the Siberian Traps. The tricky part is finding the continental drift charts going back 250 million years, finding the antipodal zone to where the Siberian Traps were and then looking for a spherical deformation in that location that is radioactive dated to 250 million years ago.