Class Notes (807,350)
Canada (492,715)
EESA06H3 (540)
Nick Eyles (472)
Lecture 5

EESA06 Lecture 5.docx

8 Pages
Unlock Document

University of Toronto Scarborough
Environmental Science
Nick Eyles

EESA06 Lecture 5 Page 1EESA06 Lecture 5When oceans close is the dangerous volcanoesbecause of subduction Raeologyability to flow how easy does that magma flowIceland is very fluidnot that dangerous all gases come out More viscosious dangerous stuff comes outpyroclastic Pyroclasticbroken by fire rocks are shattered by eruptions and thrown up into air Volcanic bombs or ashis a misnomernamed improperly o Italy thought it was coal burning The Green Areassubduction back into the mantleFriction earthquakes melting volcanoes Similar to lava lamp The Pacific Ring of Fire Tectonics of a closing ocean Pacific RimDense concentration of volcanes major earthquakes tsunamis SubductionThe stars marks earthquakesThe deepest earthquakes are 700km downWe know that slabs dont melt till after 700km down Magmatic Arca line of volcanoes directly above subduction zone Oceanic crustmade out of basalt Silicic magmaSedimentseawater melted reducing viscosiy of magma Deep water trenchesocean floor going down into subduction zone New Zealand small island exposed tip of a much larger land mass ZealandiaRed BoundaryPacific plate and Austrailian Plateo Bottom Austrailian Plate is being subducted under Pacific Plate o Top Pacific Plate is being subducted under Austrailian Plate older oceanic crust is heavier o Middle ObductionColliding continental crust together ObductionHimalayas creating high mountains
More Less

Related notes for EESA06H3

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.