EESA06H3 Lecture Notes - Lecture 5: Taupo Volcano, Subduction, San Andreas Fault

37 views3 pages
30 Apr 2012
School
Course
Professor

Document Summary

Lecture 5 - how oceans die: the pacific rim. Pyroclastic debris - these volcanoes produce a lot of ash. The pacific rim: new zealand, indonesia, japan, alaska, british columbia, california, chile. The continents around the rim are growing at expense of the oceans --> subduction. The continent is like a giant snow plow, scraping sediments and adding to the continent & oceanic crust is being recycled. Older, thicker and heavier oceanic crust goes under other oceanic crust - when this happens, a new continent forms (continental crust) Water cools the magma and subduction begins (when the earth first started) Massive displacement of the sea floor --> tsunamis. Lahars - remobilization of ash by heavy rain like heavy mud (happened in chile and wiped out a whole town) Pyroclastic flow - avalanche of hot gas and very large boulders. 4 major plates are colliding! (pacific, phillipine, eurasian and north american) Bay waves - waves move to the coast.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents