{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

glg 101 - GLG 101 Continental Drift the hypothesis that...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
GLG 101, August 25, 2010 Continental Drift – the hypothesis that continents are mobile. i. Proposed by German meteorologist Alfred Wegener ii. Wegener hypothesized a former supercontinent, Pangaea. iii. Idea was founded on strong evidence – “fit” of continents, location of glaciations, fossil organisms, rock type and structural similarities, paleoclimates preserved in rocks. Lacking an advocate, the drift hypothesis faded. His idea was revived in the 1950s. Glacial Evidence - Permian glacial till is found on four continents. The tills in Africa and India are now near the equator. Paleoclimatic Evidence – placing Pangaea over the Permian South Pole i. He correctly predicted tropical coals, reefs, subtropical deserts Fossil Evidence – Identical fossils found on widely separated landmasses, Mesosaurus (freshwater reptile), Glossopteris (subpolar plant with heavy seeds) These organisms could not have crossed an ocean.
Background image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}