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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tectonics:
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 • •
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 •
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 •
Tectonics of the Qinghai Earthquake
Category: geology
Late on Tuesday (or Wednesday morning local time) western China was shaken by a magnitude 6.9 earthquake. The focal mechanism, courtesy of the USGS, tells us that it occured on a strike-slip fault like the San Andreas fault and...
Posted by Chris Rowan at 1:38 PM • 2 Comments •
More folds a-plunging
Category: outcrops
Beautiful Scottish geological structures I happened across on my weekend walk.
Posted by Chris Rowan at 12:00 PM • 4 Comments •
Haiti: what next for the Enriquillo Fault?
Category: geohazards
On sections of the fault adjacent to January's rupture, strain built up by plate motions is still there, waiting to be released. The only question is when, and how.
Posted by Chris Rowan at 6:00 PM • 7 Comments •
Tectonics of the Haitian earthquake
Category: geohazards
Haiti is parked right on top of a plate boundary, but too poor to really prepare for the inevitable large earthquake.
Posted by Chris Rowan at 1:30 AM • 85 Comments •
12 folds a-plunging
Category: geology
On the 12th day of Christmas my true love sent to me... what is the final geological gift?
Posted by Chris Rowan at 11:25 AM • 8 Comments •
11 terranes amalgamating
Category: geology
On the 11th day of Christmas my true love sent to me...
Posted by Chris Rowan at 1:15 PM • 1 Comments •
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