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You are browsing the archive for 2010 November.

30 November 2010

Scenes from the Virginia Museum of Natural History

The author describes a quick visit to the Virginia Museum of Natural History in Martinsville, Virginia, on his way back to DC from Thanksgiving travel. Highlights: a dinosaur, a giant stromatolite, encrusting crinoids (they do that?) and a giant ground sloth.

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29 November 2010

Tavşanlı Zone field trip, part 7

Part 6 of the Tavşanlı Zone field trip had us looking at some blueschists and eclogites. Today we conclude the terrific field trip with a brief look at a couple more stops.

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26 November 2010

Friday fold: the Scottish coast

Whilst searching the coastline of the U.K. for Where On Google Earth? #226, I found these lovely folds exposed in wave-cut platforms on the east coast of Scotland. I missed the actual location of the Google Earth screenshot (It was in Wales, and Anne Jefferson found it), but I’m happy enough to have found some sweet folds exposed in map view.

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24 November 2010

How many structures I saw here

Yesterday, I asked for you to evaluate this rock sample of the Belt supergroup and tell me how many structures (both primary and tectonic) that you could identify in it. Thanks to everyone who participated in the discussion. Here’s my annotated copy of that photo for comparison:

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23 November 2010

How many structures can you see here?

Last summer, in Bonner, Montana on my Rockies field course, I took the students to see some nice exposures of Belt Supergroup strata on the side of the road. We were keeping our eyes peeled for both primary structures (i.e., patterns in the sediment that formed at the time of their deposition) and secondary, or tectonic, structures (i.e., those that formed as a result of the rock being strained under …

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19 November 2010

Is this an angular unconformity on Mars?

Jason Buchheim, one of the people I met last week in Pittsburgh, just posted a Gigapan of images stitched together from the Mars Observer MER HiRise. Part of it jumped out at me as being similar to the map pattern we see on Earth where an angular unconformity outcrops: Here, I’ve highlighted the pattern which caught my eye: On the other hand, the increasing inflection of the “lower” (in the …

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Friday fold: Belcher Islands, Canada

The Friday fold this week is the sinuous shape of the Belcher Islands, Canada.

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17 November 2010

Fall at NOVA Annandale

Just to share the autumn color wonder that the east coast can be… here’s a shot of our “lake” on campus from the week before last.

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16 November 2010

Extended tomb

This summer, strolling atop the massive travertine terraces of Pamukkale, Turkey, I checked out the necropolis (graveyard) of Hierapolis, an ancient city founded around 200 BCE and abandoned after an earthquake in 1534. One thing that caught my eye there was this tomb, built of travertine blocks.

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15 November 2010

Joint sets at Pamukkale, Turkey

A lot on my plate today, so I’m just going to toss a random photo from my summer trip to Turkey up on the blog for today. This is a block of building stone at Hierapolis, the Greek spa resort atop the travertine mounds of Pamukkale, in central Turkey (near the town of Denizli). Check out the sweet joints: They occur in two main sets, which intersect at angles between …

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