Plate tectonics

Plate Plate tectonicstectonics

Laszlo BertalanLaszlo BertalanPhD-studentPhD-student

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

Wegener’s hypothesisWegener’s 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

► 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

Interior of the EarthInterior of the Earth

Movement of the platesMovement of the plates

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

ExamplesExamples

new born ocean: Red Sea

ExamplesExamples

Andes

ExamplesExamples

San Andreas fault

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