From December 5, 2009 |
Tanners is classic Little Cottonwood granite at the bottom, but up higher, it turns into Big Cottonwood quartzite. The picture isn't good, but there is a point where the transition is quite acute: red quartzite on one side and granite on the other. Anyone know the geological explanation for this?
From December 5, 2009 |
Going up without the benefit of good snow cover takes a long time. I think it took a little over 2.5 hrs to top out. Off the other side, I was pleased to find some skiable snow.
From December 5, 2009 |
There were several areas that still held legitimate powder (with some toothy rocks lurking underneath).
From December 5, 2009 |
When I got to where it was tough to turn, I looked up. I was concerned about having to hike down Tanners since it was quite steep and loose. So I headed out Broads. Here's a view looking back.
From December 5, 2009 |
The trek out Broads was through about 10 inches of snow. I had to walk most of the way. The highlight out Broads was being followed by a coyote. It would keep its distance, but its yipping and howling was a bit unnerving. I think it was hungry. I hit the BCC road a little under 4 hrs after I left the LCC road. I stuck out my thumb, and immediately got a ride down the canyon. Gotta love the Wasatch.
The "granite" you speak of at the base of Tanner's is called the Little Cottonwood Stock, a quartz monzonite pluton. This pluton was intruded into the Pre-Cambrian rocks of the Wasatch about 31 million years ago. Check out this link: http://geology.utah.gov/surveynotes/geosights/gilbertpark.htm
ReplyDelete