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Blog Posts Tagged "Subduction"
Submitted by Jeff Ryan on Fri, 08/08/2014 - 20:46
So, why am I, a seriously land-loving geologist on this ship? Because I have spent my career examining rocks and processes associated with subduction.
Submitted by Amy West on Sun, 08/10/2014 - 03:04
Our entire mission is dependent on seismic data and our interpretation of it. We can be wildly off, or spot on with what we think we’ll encounter during drilling. It’s a highly educated guess, but what worried many members of the team was drilling through too much sediment before they hit the hard rock.
Submitted by Agnes Pointu on Sat, 08/27/2016 - 03:21
Submitted by Naomi Barshi on Sun, 09/25/2016 - 19:05
The Indian and Australian Plates plow northeast into the Sumatra subduction zone, part of the larger Sunda subduction zone, at a speed of 45 mm/yr. The angle between the direction these two plates move relative to each other is not always at a right angle (90°) to the subduction zone itself--here it is about 50°. Sliding under the Sunda Plate at an angle is not easy, so several large strike-slip fault systems help to accommodate some of this movement. If you thought learning vectors in high school was pointless—think again. This is a perfect vector component problem!
Submitted by Naomi Barshi on Tue, 10/04/2016 - 20:19
Several different types of earthquakes and fault-slip events happen at the Sunda subduction zone and other subduction zones around the world. Typical earthquakes usually last a few seconds to a few minutes, if they have very large magnitude. But not all fault slip results in typical earthquakes.
Submitted by Martin Bottcher on Sat, 01/21/2017 - 05:23