ESCI 1111 Lecture Notes - Lecture 10: Mid-Ocean Ridge, Graben, Asthenosphere

• School: University of Windsor
• Department: Earth and Environmental Sciences
• Course: ESCI 1111
• Professor: samson

Document Summary

Plates moving around on asthenosphere, force exerted on edge of plates, potential forces operating, two plates are moving apart away from another. Forces and deformation: any stress on any kind of material forces of compression, in this sheer sense, stress= force per unit area, strain. A consequence of stress: faults: offset move along fraction leading to a fault, looking at strata in the earth. Iceland sits on midatlantic ridge it"s a hotspot, get volcanic zones, find volcanoes and faults, get normal faults and little rift valleys. Fault moves waves generated point on earths surface can tell what. Hot spot mid ocean ridge ascending mantle below it, at some depth the asthenosphere starts melting mantle rising up the dropping pressure we move from below soldious to above solidous. Thin ploom long linear piece of mantle that is rising rather than a single point. Mantle rising partial melting the whole thing pulling apart.