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Today's APOD
http://antwrp.gsfc.nasa.gov/apod/astropix.html
"Many bumps and valleys on the map can be attributed to surface features, such as the North Mid-Atlantic Ridge and the Himalayan Mountains, but others cannot, and so might relate to unusually high or low sub-surface densities." Is it just me, or do the dark blue areas represent a fairly accurate map of past major meteoric impacts? Rick |
#2
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Today's APOD
Rick wrote: http://antwrp.gsfc.nasa.gov/apod/astropix.html "Many bumps and valleys on the map can be attributed to surface features, such as the North Mid-Atlantic Ridge and the Himalayan Mountains, but others cannot, and so might relate to unusually high or low sub-surface densities." Is it just me, or do the dark blue areas represent a fairly accurate map of past major meteoric impacts? Rick David Ford: It's just you. |
#3
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Today's APOD
"Rick" wrote in message ...
http://antwrp.gsfc.nasa.gov/apod/astropix.html "Many bumps and valleys on the map can be attributed to surface features, such as the North Mid-Atlantic Ridge and the Himalayan Mountains, but others cannot, and so might relate to unusually high or low sub-surface densities." Is it just me, or do the dark blue areas represent a fairly accurate map of past major meteoric impacts? Rick Bangui in Africa (close). And (check the tomography) something really, really big in the Indonesian region (crust) reflecting an opening in the Central Pacific (mantle). (Allow for crust-mantle detachment/ slippage). That Area is where the Americas began their detachment from Asia. http://users.indigo.net.au/don/ee/alaska.html (see purple spot in fig.c) It's actually moot whether something of that (Pacific) ilk could be related to the Moon, either as just too close for comfort, or an actual impact (Yes, I know the impacts on the Moon are (supposed to be) much older. I don't like the impact idea for something like the Moon, but there's certainly something very, very curious about it all. Also there seems to be quite a long precursor to that Pacific opening that involved the whole Earth. The gravity pumping that J.Taylor mentions is what I would plump for, active over a long period. A kind of "dragging out" of the mantle. A kind of 'prolapse'. (The mexican one of course doesn't show (tiddler) df. |
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