震旦系－下古生界
Sinian system-lower Paleozoic
sinian-lower palaeozoic
sinian-lower paleozoic
上元古界—下古生界
upper-proterozoic-lower-paleozoic
塔河下古生界
Lower Paleozoic in Tahe Oilfield
下古生界
the Lower Palaeozoic Erathem
bitumen C
exploration
lower paleozoic
paleozoic
lower Palaeozoic
the Lower Paleozoic
lower-palaeozoic
下古生界气藏
Lower Paleozoic gas reservoir
下古生界潜山
Lower Paleozoic buried hill
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
上古生界煤系
Neopaleozoic coal-bearing series