posted on Feb, 10 2013 @ 11:10 PM
Originally posted by Olivine
reply to post by TrueAmerican
This earthquake is located adjacent to a complex section of the Australia-Pacific plate boundary, where the Solomon Trench to the west is linked
to the New Hebrides (Vanuatu) Trench to the south by a short segment of dominantly strike-slip plate motion.
Otherwise known as transform faulting.
Cool graphics added to the summary page since Friday, too.
Yeah well I wish the USGS would make up its damn mind, cause not only does the historic seismicity map I linked to show that section as a subduction
zone in purple, so does this:
I circled the area in question, and you can clearly see the arrows, indicating the subduction.
Transform faults are also marked in the document.
So I guess it just depends on who you talk to...at the USGS...
And dominantly strike-slip plate motion, means mostly, as in, there are other types of motion occurring as well.
We had this same situation with Japan on the southern boundary, with conflicting information. And a tsunami from hell generated in the 1923 Kanto
quake, supposedly originating on a transform fault.
Point being, science is not absolute with a lot of things, and they can only give us their best interpretation, which changes over time. This is
another grey area.
And also note that doc is recent:
First posted December 19, 2011
So it's not like I dug up something out of the 1950's.
edit on Sun Feb 10th 2013 by TrueAmerican because: (no reason given)