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
group
ora ditrapake
ora ditrapake
kategori liyane
rock grained coarse, rock opaque
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque