How many peak periods of dyke formation is recorded in cratonic shields of India?

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Pratheesh P.

It is difficult to say a number precisely.......

Evidences regarding few set of swarms are available......

In SGT, Possible 1600-1400 Ma, 1100-900 Ma (Rodinia eq) , 700-500 Ma (Pan-African eq.), 120-115 Ma (Kerguelen eq.), 95-90 Ma (Marion eq.) and 65-60 Ma (Reunion/Deccan eq.) were noticed.

But the Ages need confirmation........

Zhenyu Li

Sorry. Actually, I am not familiar with geological background in India, so I really do not know mafic dykes in Gondwana coal fields of central India and NE India.