Seafloor Spreading Theory Upsc

Occurs due to mantle convection.

Seafloor spreading theory upsc.

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. 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. Sea floor spreading for upsc cse lesson 10 of 12 335 upvotes 6 33 mins. Dietz that could explain the significance of the mid ocean ridges the oceanic trenches the pattern of earthquakes and.

Sea floor spreading theory is important for the upsc prelim and main exam. As the lesson starts bhumika briefs about the conventional current theory. Morgan later outlined the theory in 1968. After the second world war the understanding of ocean floor significantly changed.

To understand the concept of seafloor spreading we must first understand some basic concepts that form the cornerstones for the concept of seafloor spreading. In 1967 mckenzie and parker suggested the theory of plate tectonics. Seafloor spreading theory mapping of the ocean floor. These cornerstones are convectional current theory and paleomagnetism.

Convection current theory convection current theory is the soul of seafloor spreading theory. Further she describes the process on how exactly the sea floor spreading is occurring. Sea floor spreading theory. Arthur holmes in 1930s discussed the possibility of convection currents.

It opened up a whole new paradigm for the study of geomorphology. 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 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. 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. That is it explains why the age thickness and density of the oceanic crust increases with distance from the mid oceanic ridge.