Friday focal mechanisms
Category: geology
A brief summary of the week's large earthquakes and their tectonic context.
Posted by Chris Rowan at 5:35 PM • 9 Comments •
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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, and South Africa in his first post-doc, he now works at the University of Edinburgh.
Anne Jefferson has a love of all things water-related and blends hydrology, geomorphology, geology, and climate change in her work. She has a Ph.D. from Oregon State University and is now an assistant professor at the University of North Carolina at Charlotte.
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geology:
How do we know Gabon's 'multicellular' fossils are 2.1 billion years old?
Category: geology
The fossil record prior to 550 million years ago is so patchy that every discovery is going to cause some fanfare. That is certainly case with these odd looking things, which have been proclaimed in Nature as the oldest...
Posted by Chris Rowan at 8:25 AM • 11 Comments •
Creeping fault segments are showing their age
Category: geology
Do faults get weaker as they get older?
Posted by Chris Rowan at 12:05 PM • •
Yellowstone it was
Category: geology
Give yourselves a pat on the back: virtually everyone guessed correctly that my fortnight away was chiefly spent exploring Yellowstone National Park, bookended by some time in Grand Teton National Park just next door. The first photo I showed...
Posted by Chris Rowan at 12:45 PM • 5 Comments •
Old tectonic scars run deep: the magnitude 5.0 earthquake in Ontario
Category: geohazards
The location of yesterday's earthquake in Canada was controlled by tectonic processes that operated, and ceased, hundreds of millions of years ago.
Posted by Chris Rowan at 6:00 PM • 12 Comments •
Accretionary Wedge #25: An Illustrated Glossary of Cool Geological Things
Category: geology
A smorgasboard of earth science imagery, in visual dictionary form.
Posted by Chris Rowan at 7:15 AM • 24 Comments •
Lava lake tectonics
Category: geology
In the crater of Erte Ale, we can see processes that take tens of miliions of years on a global scale happening in just a few hours.
Posted by Chris Rowan at 2:00 PM • 8 Comments •
Top Kill: what BP is trying to do
Category: environment
How injecting drilling mud can hopefully stem the well leak in the Gulf of Mexico.
Posted by Chris Rowan at 9:20 AM • 36 Comments •
A very British paradigm shift
Category: geology
My admiration for the intellectual integrity of Arthur Holmes, and his patient advocacy of continental drift.
Posted by Chris Rowan at 11:55 AM • 13 Comments •
The seismic non-pocalypse
Category: geohazards
Why seismically, 2010 is not as out of the ordinary as some people think - and why the question is actually the wrong one to be asking anyway.
Posted by Chris Rowan at 6:30 PM • 11 Comments •
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