GEOL107_06

GEOL107_06 - GEOL107L6 9/2/2011 PlateTectonics2...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
GEOL 107 L6 9/2/2011 1 Plate Tectonics 2 What’s going on under the surface… Distribution of Earthquakes black=shallow, green=intermediate, red=deep Shallow mostly associated with mid ocean ridges Intermediate/Deep mostly associated with trenches Wadati Benioff Zones
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
GEOL 107 L6 9/2/2011 2 Key Observations from Earthquakes Shallow earthquakes are associated with mid ocean ridges Deep Earthquakes are only associated with trenches Distribution of Volcanoes Hot Spots Plate Tectonics: A Unifying Theory The outer portion of the earth is broken into “plates”
Background image of page 2
GEOL 107 L6 9/2/2011 3 Plate Tectonics: A Unifying Theory New oceanic crust is created at mid ocean ridges magma wells up to fill the crack as the plates diverge magnetic stripes on seafloor demonstrate that the crust ages away from the ridge crest Shallow earthquakes Later observation of volcanic activity along ridge axis Plate Tectonics: A Unifying Theory Plates are “recycled” at trenches where they
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/11/2011 for the course GEOL 107Lxg at USC.

Page1 / 4

GEOL107_06 - GEOL107L6 9/2/2011 PlateTectonics2...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online