Batubara lan Greywacke Definition
definisi
coal iku combustible-ireng coklat ireng utawa sedimentary rock biasane kedadean ing parang tingkat ing lapisan sing disebut kasur coal
greywacke wis ditetepake minangka rock sandstone coarse-grained peteng kang ngandhut sen lempung luwih saka 15 saben
panemu
john peter Salley
Dingertèni
Etimologi
saka col term english lawas, kang wis temenan Mineral karbon fosil wiwit abad kaping 13
saka grauwacke german, saka grau grey + wacke
kelas
rocks sedimentary
rocks sedimentary
sub-kelas
awet rock, rock alus
awet rock, hard rock
group
ora ditrapake
ora ditrapake
kategori liyane
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque
rock grained nggoleki, rock opaque