GLG 244 Quiz: GLG 244 Quiz #1 Notes

• School: Miami University
• Department: Geology
• Course: GLG 244
• Professor: Yilidrim Dilek

Document Summary

The second heat source is core: pacific = over half, atlantic = about 1/4 , indian about 1/5, pacific, largest and deepest, east pacific ridge, rimmed by trenched and subduction zones aka the. Indian ocean: smaller than atlantic but similar in depth and primarily in the southern. Hemisphere: developed in the last 90 million years, arctic ocean, smallest and most shallow, permanent layer of ice, seafloor spreading. I(cid:374)(cid:374)er (cid:272)ore"s pressures are too high so it is (cid:448)er(cid:455) solid a(cid:374)d (cid:448)er(cid:455) de(cid:374)se. In deep parts of the earth, it flows and stretches: drives plate tectonics. It (cid:449)as agai(cid:374)st the (cid:862)fi(cid:454)ist(cid:863) idea a(cid:271)out earth a(cid:374)d (cid:373)ost people (cid:271)elieved in vertical motion: harry hess, joined the navy during wwii to collect gravity and sonar data for 3 years (to find. German ships: his resear(cid:272)h esta(cid:271)lished the h(cid:455)pothesis (cid:272)alled (cid:862)sea floor spreadi(cid:374)g(cid:863) (cid:449)hi(cid:272)h leads to plate tectonics, seafloor sediments are only 180 million years old new sediments because olds are sub-ducted.