EARTHSC 1121 Lecture Notes - Lecture 6: Upwelling, Geomagnetic Reversal, Outer Core

• School: Ohio State University
• Department: Earth Sciences
• Course: EARTHSC 1121
• Professor: Wendy Panero

Document Summary

Proposed by german meteorologist alfred wegener: hypothesized pangea. (cid:862)fit(cid:863) of the (cid:272)o(cid:374)ti(cid:374)e(cid:374)ts location of glaciations fossil evidence rock type and structural similarities. (cid:272)ie(cid:374)tists thought : oceans and the continents were permanently fixed, there were no changes in contents back in time. E(cid:448)ide(cid:374)(cid:272)e of d(cid:396)asti(cid:272) (cid:272)ha(cid:374)ges i(cid:374)te(cid:396)p(cid:396)eted as : wrinkling and stretching due to a shrinking earth as it cools, rebound from thick sediment loading, the (cid:396)esult of (cid:862)uphea(cid:448)el(cid:863) Wegner noted the continents seem to all fit together. He argued that the fit could not be coincidental. Permian glacial till is found on all continents except north america. The tills in africa and india are now near the equator. Pla(cid:272)es pa(cid:374)gea o(cid:448)e(cid:396) the pe(cid:396)(cid:373)ia(cid:374) (cid:272)outh pole . He (cid:272)o(cid:396)(cid:396)e(cid:272)tl(cid:455) p(cid:396)edi(cid:272)ted : tropical coals, tropical reefs, subtropical deserts, subtropical evaporates. Identical fossils found on widely separated land: reptiles should(cid:374)"t (cid:271)e a(cid:271)le to (cid:272)(cid:396)oss a(cid:374) o(cid:272)ea(cid:374) Geologic phenomenon match across the atlantic: mountain belts.