Metm of Pelitic rocks

Pick the element NOT common in pelitic rocks protoliths

• Na

• K

• Fe

• Mg

Identify the proper sequence of zoning in Barrovian metamorphism

• chlorite-muscovite-biotite-staurolite-garnet-kyanite-sillimanite

• chlorite-biotite-orthoclase-garnet-kyanite-sillimanite

• chlorite-biotite-garnet-staurolite-kyanite-sillimanite

• chlorite-biotite-garnet-andalusite-kyanite-sillimanite

The Biotite Zone lies in the ___ facies

• Greenschist

• Amphibolite

• Blueschist

• Granulite

Garnet is not formed in the garnet zone in pelites having ____ alumina content

• high

• low

The mineral that first melts in the granulite facies of a metamorphic rock with pelitic protolith is:

• biotite

• muscovite

• sillimanite

• hornblende

Metamorphism of pelitic rocks can be studied best in the ____ compositional diagram

• ACF

• AFM

• CAS

• MCS

The following minerals does not appear in low P facies series of metamorphism of Pelitic rocks

• Chlorite, Cordierite, Kyanite

• Andalusite, Sillimanite, Cordierite

• Garnet, Staurolite, Kyanite

• Andalusite, Kyanite, Sillimanite

The pelitic rocks comprises of sedimentary rocks like sandstone, shale, limestone

• false

• true

Anatexis of high grade metamorphic rocks of pelitic origin may produce ____

• Charnockite

• Khondalite

• Amphibolite

• Schist

________ disappears in the biotite zone and reappears in the sillimanite zone in the metamorhpism of pelitic rocks

• K-feldspar

• Na-feldspar

• Ca-feldspar