EESA06H3 Lecture Notes - Lecture 6: Tethys Ocean, Continental Crust, Oceanic Crust

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7 Jan 2018
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Week 6: lecture #6: monday february 09, 2015. The death of oceans toward the next supercontinent. Ocean has a max width and then they close. Analog: an example, an type, sth you can compare to: pangea and the tethys ocean. Tethys ocean, it has closed, a lot of mountain building came from the closing of the tethys ocean: alpine himalayan orogeny: indian subcontinent collides with. Asia after 25 ma destroying the tethys ocean and creating the. Mediterranean sea: pacific rim of fire": widespread subduction of ocean floor. L6: alpine hi(cid:373)ala(cid:455)a(cid:374) oroge(cid:374)(cid:455): re(cid:373)(cid:374)a(cid:374)ts of a(cid:374) a(cid:374)(cid:272)ie(cid:374)t (cid:858)dead o(cid:272)ea(cid:374)(cid:859) L7: the pacific ocean: a (cid:858)d(cid:455)i(cid:374)g o(cid:272)ea(cid:374)(cid:859) e(cid:454)pressed as the (cid:858) i(cid:373) of fire(cid:859) Co(cid:374)ti(cid:374)e(cid:374)tal (cid:448)s (cid:272)o(cid:374)ti(cid:374)e(cid:374)tal (cid:272)rust (cid:894)(cid:858)o(cid:271)du(cid:272)tio(cid:374)(cid:859)(cid:895) ne(cid:449) )eala(cid:374)d, i(cid:374)dia. O(cid:272)ea(cid:374) (cid:272)rust (cid:448)s o(cid:272)ea(cid:374) (cid:272)rust (cid:894)(cid:858)su(cid:271)du(cid:272)tio(cid:374)(cid:859)(cid:895) isla(cid:374)d ar(cid:272)s: japa(cid:374), i(cid:374)do(cid:374)esia. Always the older thicker ocean crust that gets subducted, b/c it"s colder. Young ocean warm and flamboyant: ocean crust vs continental crust (subduction) magmatic arcs: west coasts n and s america.

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