Cc
Siliciclastic metasandstone and slate
Mg
Ob
Zps
Zr
Zrf
Zrfs
Ccu
Siliciclastic quartzite
Ch
Zl
Chm
Siliciclastic metasiltstone
Cm
Cn
Cr
Css
Obl
Zac
Zll
Zp
Zm
Zs
Zw
Cnb
Cs
Carbonate
Mgg
Mgc
Oj
Ot
Zas
Zsl
Zwl
Zwlc
Pzp
Felsic rocks
Yg
Ygd
Ygg
Ymg
Ymp
Ypg
Pzd
Mafic and ultramafic rocks
Ya
Yu
Ybg
Mixed
Yh
Ym
Za
Siliciclastic sulfidic slate
Zchsl
Zcs
Zts
Zwe
Zag
Graphitic sulfidic coarse siliciclastic rocks
Zc
Zcc
Ze
Zrs
Zt
Ztb
Zam
Zch
Zchs
Siliciclastic Quartz-muscovite schist
Zwb
Zes
Siliciclastic feldspathic metasandstone and conglo
Zlls
Zsc
Zgb