The concept of geosyncline was propounded by :
Hall and Dana
James Hall and James D. Dana developed the geosynclinal explanation of mountain building. Hall emphasized thick sediment accumulation in subsiding basins, and Dana developed the concept of elongated subsiding troughs later involved in mountain formation.
Asthenosphere is:
The discontinuity present in earth's interior between lower mantle and outer core is called _________.
Which of the following igneous rocks contain silica in excess of 65%?
Which type of rocks are found in Lafagarh and Podi Uprora ?
Part of Gondwana land is