Sea Floor Spreading is an interesting theory proposed by Harry H. Hess in 1960. It is an amazing phenomenon that happens at mid-ocean ridges. The basic point of Sea Floor Spreading is the fact that the age of the Seafloor rocks is not the same throughout the ages. When great heat is generated by the radioactive chemicals in the mantle. The oceanic ridges formed on the seafloor. 

That’s where the currents meet at the rising limbs, and trenches form at the falling limbs. New material is added to the ocean floor naturally when the older materials are pushed away from the earth’s crust. 

This is because, the molten material erupts from the mantle and it spreads out and pushes older rocks to the side of the fissure, a new ocean floor forms along cracks in the ocean crust. The process will continue until it adds an additional ocean floor. 

Outcomes Of Seafloor Spreading 

1. Solves the dilemma regarding the younger crust being discovered and older rocks being found. 

2. Explains why the sediments in the cores are thin. 

3. Supports Alfred Wegener’s continental drift and supported in the development of Plate tectonics theory. 

Impact Of Seafloor Spreading. 

· Increasing the rate of seafloor spreading increases the oceanic ridge. When the ridge cools and contracts the sea level rises.

· Causes volcanic activity which releases greenhouse gases into the atmosphere. 

Seafloor spreading is the complete theory to discuss the seafloor movement. It helps us to understand rock formation underneath the ocean, and what are the outcomes and impact that it can cause on the planet.

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