震旦系灯影组
sinian dengying formation
震旦系－寒武系界线地层对比
the Sinian-Cambrian boundary strata
震旦系-寒系系边界层
Sinian-Cambrian boundary beds
震旦系浅变质岩
Sinian epimetamorphic rocks
震旦系－下古生界
Sinian system-lower Paleozoic
sinian-lower paleozoic
sinian-lower palaeozoic
白云岩
dolomite
Dolostone
kalktalkspath
dolomite rock
dolly tub
Marine dolostone
ammonia refrigeration compressor
pierite
Dolostones
DOLOMITITE