Wegener’s theory Lecture by Dr. Abhishek Baldwa

5. Wegener was a meteorologist. He propounded his concept on continental drift in the year 1912. Theory of Wegener grows out of the need of explaining the major variations of climate …

Metamorphic Rocks Lecture by Dr. Abhishek Baldwa

Metamorphic rocks are those rocks which have been changed wither in form or composition without disintegration. Physical metamorphism pertaining to change in text oral composition of the rock and chemical metamorphism …