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Tectonics and Ancient Civilizations
General
Geologists Recover Pieces of San Andreas Fault from 2 Miles Deep
As a follow up to a previous post, the San Andreas Fault Observatory at Depth (SAFOD) team has announced that they have successfully completed their drilling and obtained cores of the San Andreas Fault at depths in excess of 2 miles below the surface. The zone of interest is approximately 135-ft in length. The core size is 4-in diameter. They have cemented in a 7-in casing and the next phase of the project will be to perforate the casing within the fault and install monitoring equipment consisting of seismometers, accelerometers, tiltmeters and a fluid pressure transducer. Read on for more info and links. (Image credit: EarthScope / NSF)
Geologic Hazards
Canterbury New Zealand Earthquake Clearinghouse
For the Mw7.1 September 3, 2010 earthquake in Canterbury, New Zealand, various teams of investigators are evaluating the effects and this earthquake on behalf of the Earthquake Engineering Research Institute. This site seems to be […]
Geologic Hazards
World’s Tallest Tsunami in Lituya Bay, Alaska – 1958
The Lituya Bay Tsunami hit the Gulf of Alaska more than 60 years ago. On July 9, 1958, an earthquake estimated at magnitude 7.7-8.3 triggered a massive landslide or rockslide here, estimated at 40 million […]