Gritstone lan Batubara Definition
definisi
gritstone utawa grit punika hard, coarse-grained, siliceous sandstone
coal iku combustible-ireng coklat ireng utawa sedimentary rock biasane kedadean ing parang tingkat ing lapisan sing disebut kasur coal
asal
pennines, england
usa
panemu
JJ Ferber
john peter Salley
Etimologi
saka grit + watu
saka col term english lawas, kang wis temenan Mineral karbon fosil wiwit abad kaping 13
kelas
rocks sedimentary
rocks sedimentary
sub-kelas
awet rock, hard rock
awet rock, rock alus
kategori liyane
rock grained coarse, rock opaque
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque