EES1_Lecture3_student

EES1_Lecture3_student -     Today Plate Tectonics    

Info iconThis preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

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

Unformatted text preview:     Today: Plate Tectonics     In 1596 Abraham Ortelius suggested that Africa and  Europe had been torn away from the Americas by  “earthquakes and floods” in Thesaurus Geographicus     1858 - Geographer Antonio Snider-Pelligrini From Adam to Noah After the Deluge     Alfred Wegener 1915-1930; developed the notion of Continental Drift, including supercontinent Pangea  based on: • Coastline Shapes • Fossil plants • Fossil animals • Geologic Structures His hypothesis was rejected     Early ideas: Continental drift     270 Ma Glacial Deposits at the Equator?!?     Glacial striations Glacial erratics     If continents  could move  then…  continuity of  glacial  deposits Arrows indicate ice  flow directions…     In 1921, S. African geologist Alexander du Toit started  assembling all paleontological and geological evidence  supporting the continental drift.  ⇒ dispersion of plants w/ large seeds incapable of     wind transport across wide oceans ⇒ modern Madagascarian worms closer to Indian     worms than nearby African worms ⇒ eastern N. Am. worm closer to European worm     than to American Pacific coast worms Fossil (Paleontology) Evidence     Fossil (Paleontology) Evidence Freshwater(!)   Mesosaurus  fossils from The Earth , Tarbuck and Luntgens, 1987     Several fossil organisms have been found in common on different continents How can the same species evolve on widely separated continents???...
View Full Document

This note was uploaded on 04/07/2008 for the course SCIENCE geol 1 taught by Professor Richuad during the Spring '08 term at CSU Fresno.

Page1 / 54

EES1_Lecture3_student -     Today Plate Tectonics    

This preview shows document pages 1 - 12. Sign up to view the full document.

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