metamorphic rocks Flashcards
1
Q
Marble
A
Crystalline grains non-foliated calcite low to high grade regional or contact protolith: limestone differential pressure not required
2
Q
Quartzite
A
crystalline grains non-foliated quartz medium to high grade regional or contact protolith: quartz sandstone differential pressure not required
3
Q
Slate
A
less than 1/256 grains Foliated clay minerals Low grade Burial or regional protolith: Claystone (shale) differential pressure required
4
Q
Phyllite
A
Foliated clay minerals low grade Burial or Regional metamorphism protolith: claystone differential pressure required
5
Q
Mica Schist
A
Flaky grains Foliated Biotite, Muscovite Medium Grade Metamorphism Regional protolith: Claystone differential pressure required
6
Q
Garnet Schist
A
garnet balls grains foliated muscovite, biotite, garnet regional metamorphism medium grade protolith: Claystone differential pressure required
7
Q
Staurolite Schist
A
staurolite crosses grains foliated biotite, muscovite, staurolite medium grade regional protolith: Claystone differential pressure required
8
Q
Gneiss
A
Banded grains foliated feldspars, quartz, biotite, hornblende high grade regional metamorphism protolith: Claystone differential pressure required
9
Q
Augen Gneiss
A
eyes as grains foliated feldspars, quartz, biotite, hornblende high grade metamorphism dynamic metamorphism protolith: claystone differential presure required
