HEY,

There are seats available for M.Sc . in Geology, and you can apply with your score of 62%. Most universities require at least 50-60% marks, so you are meeting the minimum standards. Usually, admissions are done through entrance exams like IIT JAM or university-specific tests, and seats depend on the college and how well you do in the exam.

As Geology is an expanding area with a rising demand, it will be better if you send your applications to many universities to increase your probability of success.

Also, you check about the admission process, entrance exams, and syllabus required for M.Sc . in the link given below -
https://www.careers360.com/courses/msc-geology

Hope it helps.

Best of luck!!!