Kumar, G.R.R.Chacko, T.2016-07-052016-07-051987UNESCO/IUGS International Geological Correlation Programme Project 236 Precambrian Events in the Gondwana Fragments:p.15https://dl-ifs.nsf.gov.lk/handle/1/1753The Kerala Khondalite belt. S. India:petrology and tectonicsA