Hi! Sorry, but slightly off topic, but I was looking closely at the Mars Surveyor pics and noted that amid these flat floodplains were an awful lot of craters - I got to wondering that if the craters happened during the Great Bombardment period of about 3.8GYA, then these flood plains maybe formed Before the event, in which case the water that was on Mars has long gone over the intervening 4billion years. Does Mars have tectonic activity? then I thought of Mons Olympus which I understand is a tectonic phenomenon so evidently there has been some tectonic movement, and yet he planet is still so heavily scarred... and I thought the subduction of the tectonic plates over4 billion years would have wiped the craters. So, in summary,when did the flood plains form? When did the craters form? Before or after the flood plains?!! dates, timelines wanted!!!!
thanks for hearing my waffle! dave IMCA #0092 ] ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
