Friday, February 12, 2016
Week 2: Plate Tectonics
Thailand is located on the Eurasian plate boundary. The plates coming together around Thailand have many different boundary types. If only it were so simple! It looks like the mass of Thailand is on two different blocks which are attached to the Eurasian plate which Asia sits on. To the southwest of Thailand, the plate is subducting ocean floor (line with little triangles). Those other lines on the map mostly look like transform faults (Plates and faults are often confused. Faults are mini versions of plate boundaries; much shallower). Divergent boundaries really only occur on the deep seafloor as it spreads apart and spits out basalt.
Thailand is on the Eurasian plate but it also is in the region of the Sunda Plate. "The Sunda Plate was formerly considered a part of the Eurasian Plate, but GPS measurements have confirmed its independent movement at 10 mm/yr eastward relative to Eurasia"(Wiki). Thailand is not located on a fault line so it rarely experiences earthquakes. The eastern region is completely in green meaning that it is completely safe. "Thailand has a number of active faults with the potential to trigger tremors, many of which are concentrated in the northern and western regions. However, these faults do not have the capability to cause strong quakes like those in the Ring of Fire or in areas directly on top of tectonic plate boundaries"(Chula).
Sources:
http://www.cicc.chula.ac.th/en/2012-04-26-04-31-26/203-likelihood-of-earthquakes-in-thailand.html
https://en.wikipedia.org/wiki/Sunda_Plate
Picture Source:
http://mpconline.mpc.edu/pluginfile.php/429774/mod_resource/content/1/Summary%20PlatesBoundaries.pdf
https://en.wikipedia.org/wiki/Sunda_Plate
https://www.e-education.psu.edu/earth520/content/l2_p14.html
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Great that you found all this information. Your tectonic setting was complicated indeed....can you please explain what the last image refers to? (are those colors zones of risk?)-thank you.
ReplyDeleteHi Makayla, I enjoyed reading your post because all of the images drew me in. I really liked the fact that you explained that transform faults which are similar to plates. The country I am researching is the Caribbean plate and experiences more earthquakes. Great post.
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