No, not long at all. The Caledonian Orogeny is relatively recent - only 450
million years ago (in round numbers). If you had come north last year I
could have shown you some *really* old stuff (aside from a regularly used
camera which is more than 60 years old) - rock from almost 3Ga ago (3
thousand million years) at Oldshoremore:
First, the beach:
http://www.hemy.me.uk/img/P9132209.jpg
Second, the cliff seen in the previous image, showing the characteristic mix
of deeply twisted basaltic and granitic rock:
http://www.hemy.me.uk/img/P9132211.jpg
The background is explained here, courtesy of University of Oxford:
http://tinyurl.com/AgeNWHighlands or, if you prefer a home-grown commentary,
try here:
http://epod.usra.edu/blog/2007/01/lewisian-gneiss-in-scotland.html
As it happens, Oldshoremore is very close to Clachtoll, but the exposed rock
there is much younger, only 1.2Ga old (!) of which I already posted this
image:
http://www.hemy.me.uk/img/Clachtoll.jpg
Or maybe I misunderstood ;-)
Piers
-----Original Message-----
From: Chuck Norcutt [mailto:chucknorcutt@xxxxxxxxxxxxxxxx]
Sent: 08 July 2012 13:21
To: Olympus Camera Discussion
Subject: Re: [OM] off course
You must have waited for a long, long time for such an opening. :-)
Chuck Norcutt
On 7/8/2012 7:08 AM, Piers Hemy wrote:
> Or even that, around the time of the Caledonian Orogeny, you and I
> would have been near neighbours. Trouble is, I don't know whether you
> would have been here, or I there, never mind where either of those
> points might have been located. In the greater scheme of things, it's
neither here nor there!
>
> Piers
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