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You are browsing the archive for December 2010 - Page 2 of 4 - Mountain Beltway.

21 December 2010

GoSF3: Chert

Episode three in the multi-part series on the geology of San Francisco. This post focuses on the chert layers of the Marin Headlands

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20 December 2010

GoSF2: Basalt

Second in the on-going series about the geology of San Francisco: this post explores the pillow basalts of the Marin Headlands Terrane.

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19 December 2010

GoSF1: Introduction and overview

The first in a multi-part series on the geology of San Francisco and the surrounding area.

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18 December 2010

AGU, day 4

My final day at AGU was Thursday, and I spent a lot of it working on school stuff, but I did zip down to the Moscone Center for a session on communicating science to the public in an age of increased public scrutiny. Michael Mann of Penn State was the big draw here, discussing his experiences being subject to the “Climategate” email flap, Freedom of Information Act requests from James …

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17 December 2010

Friday fold: monastery brick

Sometimes you find folds in funny places, like the side of a monastery. Guest fold from Maitri.

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16 December 2010

AGU, day 3

I took a break yesterday morning from nonstop AGU meeting stuff, and got out into the city a bit. A former student of mine, Alan P., lives in San Francisco these days, and works at a local bike shop. So Alan scored us a couple of bicycles and we went for a ride from North Beach past the south tower of the Golden Gate Bridge to several beaches exposed between …

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14 December 2010

AGU, Day 2

Man, this meeting is intense. There’s so much going on all the time that for every session or talk you commit to, you’re missing literally dozens of others. This is kind of like going to the library and picking out a book, knowing that there are many other books you’re not reading — but with the exception that every 20 minutes, the old choices are gone, and they’re replaced with …

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AGU; Days -1, 0, and 1

San Francisco is great. I got out here Friday night and spent a lovely day Saturday hiking over the Golden Gate Bridge and through the Marin Headlands with my fiancee. That evening, for my 36th birthday, we went out to the Tadich Grill, source of the best cioppino (Italian seafood soup) in the city. Sunday, I enjoyed a geology field trip with other two-year-college geoscience faculty courtesy of Katryn Wiese …

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12 December 2010

Faultcano

Visit the “faultcano” in the Owens Valley of eastern California: a cinder cone which has been cut and offset along a normal fault associated with Basin & Range extension.

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11 December 2010

Three joints

Long-time readers (and students) know that I have a special corner of my heart reserved for plumose structure and hackle fringes, that finely-filigreed anatomy of a fracture surface. Fractures are everywhere in rocks, and often they show neat little “topographic” details that show fracture propagation direction and stress fields. Here are three that I haven’t yet posted* from more than a year ago, when I spent a week in the …

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