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Highly Allochthonous

Vaguely Informed Commentary From the Wide World of Earth Science

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You're not missing much Chris Rowan is a geologist specialising in the dark arts of paleomagnetism, and getting people to pay him to travel to exotic destinations for fieldwork. Having drilled up New Zealand during his PhD, he is now a post-doc at the University of Johannesburg.

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geology:

Pangaea Day, geology-style

A brief geographic trip into the late Triassic.

Active, dormant, and extinct volcanoes

How do you know your if friendly neighbourhood volcano is dead, or merely dozing?

What's up with those Archean sandstones?

In addition to searching out evidence for Archean microbial mats, my revisitation of the Pongola sandstones gave me the chance to look a bit more closely at their lithology. When I last posted pictures from this sequence, there was a...

Archean bacterial mats under the hammer

Geovandalism rears it's ugly head once more.

How big was that asteroid? The latest geochemist/geophysicist smackdown

What's the most accurate method of estimating the size of asteroids associated with past impact events?

Peperite: a basaltic sneeze into wet sediments

The outcrop that I gave you to ponder on Friday is pretty strange, but I can assure you that this isn't a wall: Most of you correctly guessed that the dark fragments are composed of a mafic (basalt-esque) igneous rock,...

Death Valley Dispatches

If you're bored with the recent metabloggery here (don't worry, I'm done, and with 'nary a mention of the F-word), you could do much worse than to head over to The Dynamic Earth, where Eric has been posting an excellent...

Seismology@home

There's an interesting news story in Nature* about a distributed computing project with a seismological twist. The proposed aim of the Quake-Catcher project is to hack and collate data from laptop accelerometers - designed to protect the hard drive when...

Sometimes you just have to plot the data yourself

An old(er) Grand Canyon? Yes, if you ignore one annoying data point...

635 days later

Hurray! Finally published!

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