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174:. Metamorphic rocks can be derived from any other kind of non-metamorphic rock and thus there is a wide variety of protoliths. Identifying a protolith is a major aim of metamorphic
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Protoliths are non-metamorphic rocks and have no protoliths themselves. The non-metamorphic rocks fall into two classes:
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On a geological time scale, the first protoliths were first formed shortly after the formation of the Earth during the
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rock, and quartzo-feldspathic rock. Similarly, sedimentary protoliths can be classified as quartzo-feldspathic,
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Magmatic protoliths can be further divided into three categories:
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Reference Module in Earth
Systems and Environmental Sciences
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Hoinkes, G.; Hauzenberger, C. A.; Schmid, R. (2014-01-01),
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57:. Unsourced material may be challenged and removed.
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151: 'stone') is the original, unmetamorphosed
291:"Classification, Nomenclature, and Formation☆"
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265:"protolith"
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227:References
202:ultramafic
195:provenance
133:(from
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18:Protoliths
396:Petrology
343:petrology
131:protolith
172:mudstone
149:(líthos)
210:pelitic
176:geology
142:(prōto)
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275:Farlex
223:eon.
221:Hadean
204:rock,
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206:mafic
191:magma
168:shale
166:is a
164:slate
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