plate tectonics
TRANSCRIPT
MilestonesMilestones continents were connected oncecontinents were connected once Alfred Wegener (1912) ‘Continental Alfred Wegener (1912) ‘Continental
Drift’Drift’ Arthur Holmes (1930) convectional Arthur Holmes (1930) convectional
currentscurrents Hess & Dietz (1960) sea floor spreadingHess & Dietz (1960) sea floor spreading The history of Earth’s crust’ conference The history of Earth’s crust’ conference
(1966, New York)(1966, New York)
Concepts of the plate tectonicsConcepts of the plate tectonics
► Geographic fit of Geographic fit of South America and South America and AfricaAfrica
► Fossils match across Fossils match across the oceanthe ocean
► ClimatologyClimatology
► Rock types and Rock types and structures match structures match across oceansacross oceans
Evidences of Evidences of the hypothesisthe hypothesis
► Geographic fit of South Geographic fit of South America and AfricaAmerica and Africa
► Fossils match across Fossils match across the oceanthe ocean
► ClimatologyClimatology
► Rock types and Rock types and structures match structures match across oceansacross oceans
Evidences of Evidences of the hypothesisthe hypothesis
► Geographic fit of South Geographic fit of South America and AfricaAmerica and Africa
► Fossils match across Fossils match across the oceanthe ocean
► ClimatologyClimatology
► Rock types and Rock types and structures match structures match across oceansacross oceans
Evidences of Evidences of the hypothesisthe hypothesis
► Geographic fit of Geographic fit of South America and South America and AfricaAfrica
► Fossils match across Fossils match across the oceanthe ocean
► ClimatologyClimatology
► Rock types and Rock types and structures match structures match across oceansacross oceans
Evidences of Evidences of the hypothesisthe hypothesis
PlatesPlates
7 major and several smaller lithospheric plates7 major and several smaller lithospheric plates
Types of plate boundariesTypes of plate boundaries
Divergent boundaries
Convergent boundaries
Transform fault boundaries