Martin, Thank you for that. It is interesting but, I don't think wet conditions in lakebeds ( which seem obvious due to the checked pattern in the dried mud ) would apply the same as dry sand blowing. This brings to mind the question; why do we need co-ords of finds again? Now we know. We can estimate how far they have traveled based on their Earth age, soil, wind and rain conditions, etc..... But how do we know all that? Too many questions. Never mind. Carl -- Carl or Debbie Esparza Meteoritemax
---- Martin Altmann <altm...@meteorite-martin.de> wrote: > Hi there, > > haven't followed the whole thread, > therefore sorry if it's a double post, > here is an article about moving rocks on Planet Mars: > > http://www.ucalgary.ca/news/utoday/jan7-09/martianrock > > Best! > Martin > > > > > > > > > > PS: > Currently camping next to a promising rock, looking like a meteorite, in > desert, waiting for it to trespass an imaginary line, from where on it will > immediately lose its status as a natural heritage and its cultural > properties. > I have no incentive to announce it to the authorities, although it looks > like ALH 84001, but has fresher fusion crust, because they will declare it > to be property of the state. And they even won't give me back the dime for > the phone call. Anyway, it would cause only troubles. > So I wait... come to papa... and if it doesn't come... who cares. > > > It's a strange thing, with that heritage and culture and the national > importance. > I'm born in the country, where Ernst Florens once invented the meteorites at > all. > 72 entries we have in the Bulletin, quite the same like Argentina or Canada, > much more than Slovakia or Denmark. And seen surface and time, we even left > Australia behind. > In the neighbor state, Schreibers invented modern meteoritics. > We both have no meteorite law!!! Eeek! How can this be possible - a true > scandal!! > > (I know, I know an useless argument. In Australia, Oman, Argentina..nobody > knows, who Ernst Florens and Carl von was.) > > > > > -----Ursprüngliche Nachricht----- > Von: meteorite-list-boun...@meteoritecentral.com > [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Göran > Axelsson > Gesendet: Sonntag, 20. Februar 2011 13:35 > An: Meteorite List > Betreff: Re: [meteorite-list] Why Are Death Valley's Rocks Moving > Themselves? --not off-topic at all! > > If I might make a guess here.... > > The area is covered under a thin layer of water, not enough to cover the > rocks. Then the temperature drops, forming a thin layer of ice, trapping > the rocks. Then it doesn't need a lot of wind to drag along an ice sheet > with frosen in rocks. As the rocks is still protruding from the ice, it > forms tracks in the underlying surface. > If more than one rock is trapped in the ice, then they will form > parallel tracks, turning at the same time if the wind direction shifts. > > I've seen the tremendous force a loose ice sheet and a modest wind can > achieve. Many years ago in spring I was at our cabin near a lake. The > weather had been warm and calm so the ice sheet of the lake (3 km x 1 km > big) was thawed a couple of meters around the edges. Then it started to > blow straight towards us and the ice started to move. First slowly, > hardly noticeable, then it started to creep up onto the beach. When it > started I stood at the edge of the water but after fifteen minutes I had > been pushed over a meter back by the ice and along the beach was a half > meter wall of ice. Then it all stopped and I've never experienced it > again, but I've seen the wall of ice deposited along beaches a couple of > times since then. > > /Göran > > > > ______________________________________________ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list@meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list