PSN-L Email List Message

Subject: Re: The Canada earthquake, instresing location
From: Dave Nelson davenn@...............
Date: Sat, 25 Feb 2006 22:01:59 +1100

Hi Jon
the nth american/canadian continent is very old and is heavily faulted
and regular small to medium quakes are common including the occassional
large event
   as the link that Carnie gave shows there is plent of activity in this=

one thing you will find is that many of the river channels ...
eg  the St Lawrence River follow faultlines as the rock along the=20
faultlines is softer and easily erroded
    this is a common feature along older landscapes and is a feature I=20
learnt to recognise quickly during my geological studies in new zealand

   the rivers of the tibetan plateau in the himilayan mountains in asia is=
a classic example of this feature


At 05:47 AM 2/25/2006 +0000, you wrote:
>Hi all
>I do not know the earthquake history of this reagion. But i wonders if
>there is a possibliti for this to be a pre-earthquake for a maybe a
>bigger event. I do not know if there was some aftershocks from this
>event, i don't see any signs of it on the usgs webpage. Far as i know,
>there aren't any fault lines in this region, but my knowlage is lacking
>regarding this area in terms of geological features.
>J=F3n Fr=EDmann J=F3nsson

Dave Nelson    VK2TDN


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