Forum Index > Trip Reports > Vesper plate tectonics model
 Reply to topic
Previous :: Next Topic
Author Message
Jackal
Member
Member


Joined: 21 Jul 2012
Posts: 102 | TRs | Pics
Location: Mazama
Jackal
Member
PostTue Aug 29, 2023 8:30 pm 
Haven't posted in a long time but I thought this would be fun to share. No, it's not a model of how plate tectonics has anything to do with how Vesper formed. Anyone who's been up Vesper knows that the granite slab scramble is one of the uniquely joyous parts of that hike. On Friday two of us (coincidentally, both former earth science teachers) were navigating that stretch (who needs cairns up there? part of the joy is the decision making) when we came across this beautiful lithologic bas relief plate boundary model! I left out the photo of the teacher modeling a classroom lesson with hiking pole pointer.
Where specifically is this you ask? Can't say because you know... gps locations change as plates move around so who knows where it will be in the future? Don't follow the cairns and maybe you'll find it! What else... Friday, there were 8-10 cars maxing out the parking area. Started very slightly smoky so we decided to go for it and midway up there was a nice 15-20 minute shower which cleared out the air and ended up with blue skies. up.gif All parts of the trail are in good shape and the variety of terrain and views were wonderful as always. Except we were stunned by the lack of snow on Glacier Pk.

jackmcleodphoto.net

John Mac, geyer, awilsondc, Bramble_Scramble, Nancyann, MistyMountainHop, Schroder, Slim, reststep, KascadeFlat, fourteen410  Anne Elk
Back to top Reply to topic Reply with quote Send private message
HitTheTrail
Member
Member


Joined: 30 Oct 2007
Posts: 5462 | TRs | Pics
Location: 509
HitTheTrail
Member
PostWed Aug 30, 2023 10:37 am 
Jackal wrote:
Also could be a fault slickenside with secondary weathering.
fault slickenside
fault slickenside

Back to top Reply to topic Reply with quote Send private message
Jackal
Member
Member


Joined: 21 Jul 2012
Posts: 102 | TRs | Pics
Location: Mazama
Jackal
Member
PostWed Aug 30, 2023 1:59 pm 
HitTheTrail wrote:
Also could be a fault slickenside with secondary weathering.
Looks very similar but there aren't any striations. It seems to be a thin sill or dike. It pops up here and there on other rocks but there's little continuity in the jumbled boulders. Definitely weathered though!

Back to top Reply to topic Reply with quote Send private message
Snowshovel
Member
Member


Joined: 05 Apr 2021
Posts: 256 | TRs | Pics
Snowshovel
Member
PostWed Aug 30, 2023 2:25 pm 
Jackal wrote:
HitTheTrail wrote:
Also could be a fault slickenside with secondary weathering.
Looks very similar but there aren't any striations. It seems to be a thin sill or dike. It pops up here and there on other rocks but there's little continuity in the jumbled boulders. Definitely weathered though!
Maybe a dike, but impossible to be a sill

Back to top Reply to topic Reply with quote Send private message
Jackal
Member
Member


Joined: 21 Jul 2012
Posts: 102 | TRs | Pics
Location: Mazama
Jackal
Member
PostWed Aug 30, 2023 2:45 pm 
Snowshovel wrote:
Maybe a dike, but impossible to be a sill
Yes, good catch.

Back to top Reply to topic Reply with quote Send private message
Anne Elk
BrontosaurusTheorist



Joined: 07 Sep 2018
Posts: 2434 | TRs | Pics
Location: Seattle
Anne Elk
BrontosaurusTheorist
PostWed Aug 30, 2023 3:45 pm 
Great shots approaching the summit. I appreciate seeing these b/c the few times I've been all the way up, a lot of it was still snow-covered. Looks like you had a perfect hiking day, with the brief rain helping clear the view. Your photos make it look like hardly anyone was there. up.gif

"There are yahoos out there. It’s why we can’t have nice things." - Tom Mahood
Back to top Reply to topic Reply with quote Send private message
   All times are GMT - 8 Hours
 Reply to topic
Forum Index > Trip Reports > Vesper plate tectonics model
  Happy Birthday C Dog, carlb328, mehitabel!
Jump to:   
Search this topic:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum