Photos from July 2010 Yosemite and Carmichael's Nipple field trip


In late July 2010, Peter Zeitler, David Shuster, and I went out to Little Devils Postpile in Yosemite, and some other really cool small mafic intrusions east of the Sierra, near Mono Lake, with the goal of both testing thermochronologic calibrations and also evaluating magmatic fluxes through a rather historically significant ~35-m radius magmatic conduit. Here are a few photos.


Just another day in Yosemite. Tenaya Lake. Wow. This was my first time to Yosemite.

On the right of the Tuolumne River here is Little Devils Postpile, the Late Miocene intrusive plug. The granitoid host rock is on the left. Nice be-ach, huh?

Ok, so it's the obligatory Half Dome shot. But you gotta admit that that is one frickin incredible scene. Look at those trees! Look at that relief! The water! The sky! Man, California's got it all.

Evidence of my sensitive side: a nice shot of butterflies on some flowers near Mono Lake.

Peter Zeitler pointing out some gargantuan K-spars in the Tuolumne. This rock was a granitoid petrologists wet dream. Now I understand why George Bergantz was always talking about the magmatic features in the Sierra.

David Shuster modeling camo shorts and bagging up a sample, roughly 20 meters away from the intrusive plug.

David in the Rattlesnake Granite, with the Sierra in the background, with a very big sledge in his backpack, and a hand gesture implying something smaller than it.

Peter swinging the sledge and David baggin samples in the host rock within about 10 meters of the soon-to-be world-famous mafic intrusive that likely fed a big ass lava flow. This intrusive plug was described by a world-famous petrologist in an article in Am. Min. two year before I was born.

In this part of the eastern Sierra, just north of Mono Lake, there are a lot of old ghosty-towny ruins, some of them in better shape than others. This one's nicer than my house. Very interesting and hard-to-figure-out piles of diggins and adits around here too.

This guy (gal?) is standing on a boardwalk in Yosemite to reach up and grab berries. The funny part was watching a guy on a bike come around the corner at 20 mph and almost run into the bear. Fortunately, the bear appeared to be slightly more scared, or at least he/she opted for flight.

I can't remember the name of these falls in Yosemite, but not bad, eh?

The last day we managed to hook up with Yosemite N.P. Ohfishul Geeologist Dr. Greg Stock, seen here giving a field trip and talk to a visiting college group. Greg is an amazing geomorphologist and geologist and had these students in rapt attention. He's also holding a copy of a book he cowrote on the geology of the park. We're standing/sitting on a LGM terminal moraine here. There is another bear just down the moraine.