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- Hope Jahren, isotope detective
- Scenic Saturday: Upper Mississippi Islands
- Stuff we linked to on Twitter last week
- Friday Focal Mechanism: M 7.4, Oaxaca, Mexico
- Geological maps: still interesting even when there’s only one rock type
- Stuff we linked to on Twitter last week
- Scenic Saturday: from desert to verdant grassland in 10 miles (and 1000 m)
- The humbling legacy of the Tohoku earthquake
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- On Hope Jahren, isotope detective :
- Lab Lemming: Translating the inside baseball isotope talk above: http://lablemminglounge.blo... (8 days 20 hours ago)
- Hope Jahren: Picarro, but if I had to do it over again I’d go Los Gatos. Long story. (9 days 9 hours ago)
- Lab Lemming: Los Gatos or Picarro? (9 days 9 hours ago)
- Matt Herod: The map of Hawaii looks like a mineral grain in thin section. Very cool. (20 days 12 hours ago)
- The Bobs: The colors on Io’s surface are primarily caused by allotropes of sulfur. Do geologists know... (55 days 11 hours ago)
- Peter Council: I won’t stand for disruptive behaviour, but I’m not that good at dealing with it, simply... (44 days 1 hour ago)
- Pam: As a non-geologist, I am hoping you have something posted about the Wisconsin booms which are being... (53 days 17 hours ago)
- terry: This didn’t fill in the Guerrero Gap. (54 days 10 hours ago)
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Category Archives: tectonics
The humbling legacy of the Tohoku earthquake
A year ago on Sunday, one of the biggest earthquakes ever recorded ruptured the subduction megathrust that dips beneath the east coast of Japan. The rupture displaced the seafloor by tens of metres and generated tsunami waves up to 20 … Continue reading
Categories: earthquakes, geohazards, tectonics
Friday(ish) Focal Mechanism: a kinky slab beneath Mexico
A quick look this week at the magnitude 6.5 earthquake that shook southern Mexico last Sunday. It caused a fair amount of shaking in Mexico City, and a few deaths, but apparently no major structural damage. The depth of the … Continue reading
Categories: earthquakes, focal mechanisms, tectonics
The Oklahoma Earthquakes
There was some slight seismic excitement over the weekend in central Oklahoma: a magnitude 4.7 earthquake shook things up early on Saturday morning, which turned out to be the prelude to magnitude 5.6 tremor late Saturday evening. The focal mechanisms … Continue reading
Categories: earthquakes, focal mechanisms, tectonics
M 7.2 earthquake near Van, eastern Turkey
Earlier this morning, a magnitude 7.2 earthquake hit near the city of Van on the eastern border of Turkey. The BBC reports that at least 45 people have died as buildings collapsed close to the rupture. The most well-known seismic … Continue reading
Categories: earthquakes, focal mechanisms, geohazards, tectonics
Does plate tectonics control magnetic reversals?
Possibly, but this paper will not convince you. Continue reading
Categories: Cenozoic, geophysics, Mesozoic, palaeomagic, tectonics
Proof of earthquake triggering in Christchurch? Not so fast…
When a magnitude 6.3 earthquake scored an almost direct hit on Christchurch in February, I discussed the possibility that rather than being a simple aftershock of the Darfield earthquake last September, it was an example of the earlier quake triggering … Continue reading
Categories: earthquakes, tectonics
Update: Christchurch aftershocks
As the aftershocks of the Darfield quake continue, where do the future seismic dangers lie? Continue reading
The far-travelled ground
Be honest: when Evelyn asked the geoblogosphere, ‘what’s your favourite geology word?’, you all knew which word I was going to pick, didn’t you? Allochthonous. Allochthonous, the word that no-one can spell. Allochthonous, the word no-one can pronounce, it seems, … Continue reading
Seismo-volcanism in Eritrea
The Great Rift Valley marks where East Africa is slowly attempting to break away from the rest of the African continent, at a rate of less than a centimetre a year. At the north-eastern end of the rift, where it … Continue reading
More large aftershocks rattle Christchurch: will it ever end?
Analysis of the ongoing earthquake sequence. Continue reading
