Re: Canadian Coal - depositional setting

From: Kevin Sharman <ksharman@pris.bc.ca>
Date: Sat Jan 24 2004 - 00:48:21 EST

----- Original Message -----
From: "Kevin Sharman" <ksharman@pris.bc.ca>
To: "Bill Payne" <bpayne15@juno.com>
Cc: <asa@calvin.edu>
Sent: Friday, January 23, 2004 9:09 PM
Subject: Re: Canadian Coal - depositional setting

>>So you would need 80 meters of
> > subsidence at the rate of 1 to 2 mm of peat accumulation per year for
> > 400,000 to 800,000 years to get an 8-meter seam of coal. Agreed?
>
> No.
>
>
>
> 80 m=80,000 mm
>
> 1 mm/year X 80,000 mm=80,000 years
>
> 2 mm/year X 80,000 mm=160,000 years
>
Sorry, that should read 80,000 years at 1 mm/year, or 40,000 at 2 mm/year.
It's obvious why we are both geologists, not mathematicians!

Kevin
Received on Sat Jan 24 00:49:00 2004

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