Plate tectonics- Unit 4

Tectonic plates

________ can move due to the forces caused by convection currents in the earths mantle.

Wegener

________ proposed the idea of Pangaea and that the continents were once joined together.

Paleoclimate data

________- Coal deposits (which suggest tropical climates) have been found in cold areas, glacial erosion has been found in warm areas.

New oceanic crust

________ is formed through volcanic activity at mid- ocean ridges and slowly moves from where it is formed.

identical rock

Rock and mountain correlation- ________ composition and mountain structures found on opposite sides of oceans.

Laurasia

Asia, Europe and North America

Gondwana

Africa, South America, Antarctica, Australia and India

Fossil Correlation

fossils from some species can be found on opposite sides of major oceans (e.g Mesosaurus fossils in South America and Africa)

Rock and mountain correlation

identical rock composition and mountain structures found on opposite sides of oceans

Paleoclimate data

Coal deposits (which suggest tropical climates) have been found in cold areas, glacial erosion has been found in warm areas