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In geology, metasediment is sediment or sedimentary rock that appears to have been altered by metamorphism. The overall composition of a metasediment can be used to identify the original sedimentary rock, even where they have been subject to high-grade metamorphism and intense deformation.[1]

Types of metasediment[edit]

Sedimentary rock Metamorphic equivalent
Limestone Marble
Mudstone Pelite
Siltstone Semi-pelite
Sandstone Psammite, Quartzite
Conglomerate Metaconglomerate