definisi
gritstone utawa grit punika hard, coarse-grained, siliceous sandstone
  
tachylite punika wangun vitreous saka kaca vulkanik basaltic. kaca iki alami dening cooling kanthi cepet saka basalt molten
  
Sajarah
  
  
asal
pennines, england
  
iceland
  
panemu
JJ Ferber
  
Dingertèni
  
Etimologi
saka grit + watu
  
saka tachylite german, saka tachy- + lutos greek telat, leleh
  
kelas
rocks sedimentary
  
batuan beku
  
sub-kelas
awet rock, hard rock
  
awet rock, medium atose rock
  
kulawarga
  
  
group
ora ditrapake
  
vulkanik
  
kategori liyane
rock grained coarse, rock opaque
  
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque