My OperaAntarctic Tectonic Plate
Wednesday, December 14, 2005 8:05:24 PM
The ozone hole is not the only Antarctic hole – there is also a hole in our knowledge about the Antarctic tectonic plate.
A team of scientists will now during a couple of research cruises try to fill some of the resting gaps to see how the Antarctic plate fits with its neighbours, and what happened in the past.
See SpaceRef.com at http://www.spaceref.com/news/viewpr.html?pid=18493
This reminds me of a very interesting article by Ian Dalziel (Earth before Pangaea) in the Special Edition of Scientific America “Our Ever Changing Earth”, where he a.o. speculates that the western edge of North America was joined to East Antarctica and Australia an immense long time ago.
He is bringing us back to the supercontinent Rodinia that existed more than 750 million years ago and the supercontinent Pangaea that existed more than 270 million years ago. As much (or rather most) of the evidence has been destroyed by later plate movements this is real puzzle work.
Ole
A team of scientists will now during a couple of research cruises try to fill some of the resting gaps to see how the Antarctic plate fits with its neighbours, and what happened in the past.
See SpaceRef.com at http://www.spaceref.com/news/viewpr.html?pid=18493
This reminds me of a very interesting article by Ian Dalziel (Earth before Pangaea) in the Special Edition of Scientific America “Our Ever Changing Earth”, where he a.o. speculates that the western edge of North America was joined to East Antarctica and Australia an immense long time ago.
He is bringing us back to the supercontinent Rodinia that existed more than 750 million years ago and the supercontinent Pangaea that existed more than 270 million years ago. As much (or rather most) of the evidence has been destroyed by later plate movements this is real puzzle work.
Ole
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