Hello Chetan
Top universities offering phD in geology are mentioned here
Aligarh muslim university
Banaras Hindu university
IIT kanpur
University of Delhi
Amity university , Noida
Panjab university , Chandigarh
Alagappan university , Andhra Pradesh
IISER , Kolkata
Indian Institute of science education and research , Behrampur
Indian Institute of science education and research, pune , maharshtra
Guahati university
Patna university
IIT Roorkee
For detsils kindly visit the link given below
https://university.careers360.com/colleges/list-of-phd-in-geology-universities-in-india
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