Seafloor Spreading Theory Upsc

This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century.

Seafloor spreading theory upsc.

It opened up a whole new paradigm for the study of geomorphology. After the second world war the understanding of ocean floor significantly changed. Convection current theory convection current theory is the soul of seafloor spreading theory. As the lesson starts bhumika briefs about the conventional current theory.

Seafloor spreading theory that oceanic crust forms along submarine mountain zones known collectively as the mid ocean ridge system and spreads out laterally away from them. These cornerstones are convectional current theory and paleomagnetism. In 1967 mckenzie and parker suggested the theory of plate tectonics. Plate tectonics it was from the continental drift theory convection current theory and the theory of seafloor spreading the theory of plate tectonics was formulated.

To understand the concept of seafloor spreading we must first understand some basic concepts that form the cornerstones for the concept of seafloor spreading. Sea floor spreading theory. Seafloor spreading theory upsc ias. This lesson deals with an important topic sea floor spreading.

That is it explains why the age thickness and density of the oceanic crust increases with distance from the mid oceanic ridge. Arthur holmes in 1930s discussed the possibility of convection currents. Dietz that could explain the significance of the mid ocean ridges the oceanic trenches the pattern of earthquakes and. Further she describes the process on how exactly the sea floor spreading is occurring.

Sea floor spreading for upsc cse lesson 10 of 12 335 upvotes 6 33 mins. Seafloor spreading is a process that occurs at mid oceanic ridges where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. Morgan later outlined the theory in 1968. The theory of sea floor spreading states that new oceanic crust is being formed continuously at mid oceanic ridges while the older rocks move away from the ridge.

According to the theory of plate tectonics the earth s lithosphere is broken into distinct plates which are. In the early 1960s a new theory was propounded most notably by the american oceanographer harry hess and geologist robert s.