2006-11-05 06:49:21 · 5 answers · asked by chelsea c 1 in Science & Mathematics ➔ Earth Sciences & Geology
does it not need to be reheated and become molten again?
2006-11-05 07:23:38 · answer #1 · answered by Andy P 1 · 0⤊ 0⤋
Any rock or mineral can turn to an igneous rock by being taken back down into the Earths mantel, via subduction zone. Taken back under the earth and melted. If the plate goes too far down than the rocks turn to magma.
2006-11-05 12:26:02 · answer #2 · answered by james l 1 · 0⤊ 0⤋
Usually the reverse is true...... but it's possible for a metamorphic rock to be heated by a volcano and become igneous
2006-11-05 06:52:56 · answer #3 · answered by The Cheminator 5 · 0⤊ 0⤋
It would have to become totally molten again, say dragged down in a subduction zone, where an oceanic plate dives under a continental plate, thus melting the crustal rocks, forming plutons of granites or emerging at the surface as rhyolite or andesite lavas.
2006-11-05 10:34:46 · answer #4 · answered by Anonymous · 0⤊ 0⤋
it can change when the rock is under enough heat that it melts and then either cools slowly as lava or cools fast as magma
2006-11-07 04:07:51 · answer #5 · answered by Clarinet-Band Geek 1 · 0⤊ 0⤋