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...Igcse environment management notes class for the students chapter rocks and minerals extraction only describe explain rock cycle with a suitable diagram fig note use simple weathering erosion break off fragments of surface sediments are deposited build up in layers as lower compacted into sedimentary igneous subjected to heat pressure underground form metamorphic at higher temperature melt magma cools formation word has been derived from latin ignis which means fire known primary or parent all other hot lava is moves towards through cracks joints get solidified by cooling either on earth below formed example basalt granite those materials favourable sites cemented layer strata consequently these also stratified sandstone shale limestone two greek words meta change morphic meaning thus when original character dr r b thohe pou m phd environmental page partly wholly changed result high converted gneiss clay transformed schist due changes quartzite characteristics usually contain crystals ...