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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Rahul kumar
1. (i) Given that the protolith is normal pelite Kfs+Qtz+Grt+Sill+Bt+Plg (Band A) is Granulite facies Mu+Bt+Qtz+Grt+Chl+Plg (Band B) belongs to Amphibolite facies Look at the attached figure for metamorphic mineral assemblages (ii) Possible tectonic discontinuity is a fault; look at the offset of chlorite band (Chl) in diagram 2. High P, Low T polymorph of Al2SiO5 is Kyanite Low P, Low T polymorph of Al2SiO5 is Andalusite High P, High T polymorph of Al2SiO5 is Sillimanite Refer to the attached figure