[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Mesozoic snow?
In article <BED11CEA.8732%missraptor@deadraccoon.com>, Swift Claw wrote:
> > The best place to look for polygonal paleosols in Mesozoic rocks would be
> > in Australia, northern Canada, northern Siberia, and Alaska (duh).
>
> But the time I see something like that happen is mainly in the summer when
> the rains hit the dry soil and then dry again quickly...
>
"Patterned ground" due to freeze-thaw action is decidedly different in
small and large scale structure to desiccation cracks. Most sedimentology
texts should detail the differences (I think I was introduced to them from a
1940s geomorphology text book.)
--
Aidan Karley,
Aberdeen, Scotland,
Location: 57°10' N, 02°09' W (sub-tropical Aberdeen), 0.021233
Written at Sun, 12 Jun 2005 09:09 +0100
___________________________________________________________
How much free photo storage do you get? Store your holiday
snaps for FREE with Yahoo! Photos http://uk.photos.yahoo.com