GSCI 1050 Lecture Notes - Lecture 5: Convergent Boundary, Oceanic Crust, Divergent Boundary
15 May 2017
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2/7 quiz - all content up to 1/31 will be on quiz. can use textbook review all notes, text, modules, mini-lectures. Muddiest point: difference bw crust and lithosphere: crust is outermost layer of earth, lithosphere is earth"s rigid outer shell. Alfred wegener"s continental puzzle fit b/w south america and africa showed areas of overlap and large gaps. Look at atlantic; practically no subduction happening there (lack of convergent plate boundaries) But look at edge of north america continent - africa fits perfectly in there, and there is a boundary there. The coastline represents modern sea level and not the actual edges of the continents. True about divergent boundary: new seafloor is created a divergent boundary formed in association with the breakup of pangea and created the atlantic. Ocean divergent boundaries can be found on continental plates false: deep earthquake activity is common along these boundaries - no, only shallow.
