Comments on: A million years worth of deposition: where and how much? http://clasticdetritus.com/2009/02/01/a-million-years-worth-of-deposition-where-and-how-much/ A blog about sedimentary geology. Thu, 09 Feb 2012 04:49:04 +0000 hourly 1 http://wordpress.com/ By: The Accretionary Wedge #15: Pondering the geological future of Earth « The Accretionary Wedge http://clasticdetritus.com/2009/02/01/a-million-years-worth-of-deposition-where-and-how-much/#comment-5201 Tue, 07 Apr 2009 03:42:25 +0000 http://clasticdetritus.com/?p=1953#comment-5201 [...] Finally, here is my own post that speculates and discusses a million years worth of deposition. [...]

]]> By: BrianR http://clasticdetritus.com/2009/02/01/a-million-years-worth-of-deposition-where-and-how-much/#comment-5022 Wed, 04 Feb 2009 03:03:40 +0000 http://clasticdetritus.com/?p=1953#comment-5022 SF says: “…could then be buried by as much as a hundred-plus more feet (tens of meters +-) of alluvial debris.”

Great point … my own bias is in the marine/coastal realm, so I didn’t even look up alluvial rates! I wonder …

]]> By: Silver Fox http://clasticdetritus.com/2009/02/01/a-million-years-worth-of-deposition-where-and-how-much/#comment-5020 Wed, 04 Feb 2009 01:40:00 +0000 http://clasticdetritus.com/?p=1953#comment-5020 I’m going to have to get the book you’ve recommended here. A million years is a relatively short period of time, geologically speaking; nevertheless, quite a bit can happen during that time. It’s about the minimum time for a hydrothermal ore deposit to form – and it must be plenty of time for one to be buried by sediment, too!

If Basin and Range development continued for another 1 million years, I would think that any ore deposits on pediments that are already under at least a thin alluvial veneer (and so, presently undiscovered), could then be buried by as much as a hundred-plus more feet (tens of meters +-) of alluvial debris. That’s just an extrapolation of your speculations, and it would be complicated by uplift and erosion rates.

]]> By: The Accretionary Wedge #15: Pondering the geological future of Earth « Clastic Detritus http://clasticdetritus.com/2009/02/01/a-million-years-worth-of-deposition-where-and-how-much/#comment-5010 Mon, 02 Feb 2009 17:59:58 +0000 http://clasticdetritus.com/?p=1953#comment-5010 [...] Disclaimers, Commenting, and Copyright « A million years worth of deposition: where and how much? [...]

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