Posted by Danny Steward
/ Seattle on November 29, 1997 at 15:46:26:
In Reply to: Trace Fossils posted
by Stuart Gold on September 27, 1997 at 15:51:01:
: The two fossils that I sent an image of were found at
about 4500ft high in the high desert nore west of Dealth Valley in an area
called Salene Valley. There are a lot of Cambrian and Precambrian areas
there. These shale outcroppings represent some of the oldest rock in the
continental US.
: The same area was originally mapped and investigated by C.D. Walcott himself
a year befor he found the Burgess Shale in Canada. Of course, aftert that,
he spent the rest of his life working the Canadian site as the Fossils at
the Burgess Shale were much better preserved. Metamorphed rock, has both
a certain look base on the fact that the rock has been subject to tremendous
pressure and temperature for millions or hundreds of millions of years.
Much of the rock that comes out of cambrian (but not all) and pre-cambrian
areas of Salene Valley, have that look of rock that has almost been melted
but as you can see, there is still much to see.
: Trace fossils are quite interesting as it's sometime very difficult to
figure out exactly what they are, either the remain of actual past life
or the result of the past life's interaction with it's environment, i.e.
wormholes, burrows, tracks or trails.
This is just fan mail! The pics and specimens are super
and know the time and effort in collecting as well as ditto time spent doing
page for anyone interested to view. Want to see more!
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