Page 1 GEOGRAPHY CRASH COURSE CAPSTONE IAS LEARNING Page 2 GEOGRAPHY CRASH COURSE CAPSTONE IAS LEARNING Page 3 GEOGRAPHY CRASH COURSE CAPSTONE IAS LEARNING Plate Tectonics • In 1967, McKenzie and Parker suggested the theory of plate tectonics. Morgan later outlined the theory in 1968. • According to the theory of plate tectonics, the earth’s lithosphere is broken into distinct plates which are floating on a ductile layer called asthenosphere (upper part of the mantle). • Plates move horizontally over the asthenosphere as rigid units. • The oceanic plates contain mainly the Simatic crust and are relatively thinner, while the continental plates contain Sialic material and are relatively thicker. Page 4 GEOGRAPHY CRASH COURSE CAPSTONE IAS LEARNING Plate Tectonics • In 1967, McKenzie and Parker suggested the theory of plate tectonics. Morgan later outlined the theory in 1968. • According to the theory of plate tectonics, the earth’s lithosphere is broken into distinct plates which are floating on a ductile layer called asthenosphere (upper part of the mantle). • Plates move horizontally over the asthenosphere as rigid units. • The oceanic plates contain mainly the Simatic crust and are relatively thinner, while the continental plates contain Sialic material and are relatively thicker. • Lithospheric plates (tectonic plates) vary from minor plates to major plates, continental plates (Arabian plate) to oceanic plates (Pacific plate), sometimes a combination of both continental and oceanic plates (Indo-Australian plate). • The movement of these crustal plates (due to convection currents in the mantle) causes the formation of various landforms and is the principal cause of all earth movements Page 5 GEOGRAPHY CRASH COURSE CAPSTONE IAS LEARNING Plate Tectonics • In 1967, McKenzie and Parker suggested the theory of plate tectonics. Morgan later outlined the theory in 1968. • According to the theory of plate tectonics, the earth’s lithosphere is broken into distinct plates which are floating on a ductile layer called asthenosphere (upper part of the mantle). • Plates move horizontally over the asthenosphere as rigid units. • The oceanic plates contain mainly the Simatic crust and are relatively thinner, while the continental plates contain Sialic material and are relatively thicker. • Lithospheric plates (tectonic plates) vary from minor plates to major plates, continental plates (Arabian plate) to oceanic plates (Pacific plate), sometimes a combination of both continental and oceanic plates (Indo-Australian plate). • The movement of these crustal plates (due to convection currents in the mantle) causes the formation of various landforms and is the principal cause of all earth movements Major tectonic plates • Antarctica and the surrounding oceanic plate • North American plate • South American plate • Pacific plate • India-Australia-New Zealand plate • Africa with the eastern Atlantic floor plate • Eurasia and the adjacent oceanic plateRead More