Trachyte lan Gritstone Definition
definisi
trachyte punika rock vulkanik nggoleki-grained werna abu-abu kang utamané dumadi saka Feldspar alkali
gritstone utawa grit punika hard, coarse-grained, siliceous sandstone
panemu
Alexandre brongniart Rene Hauy
JJ Ferber
Etimologi
saka trakhus greek atos 'utawa roughness trakhutēs
saka grit + watu
kelas
batuan beku
rocks sedimentary
sub-kelas
awet rock, medium atose rock
awet rock, hard rock
kategori liyane
rock grained nggoleki, rock opaque
rock grained coarse, rock opaque