lower cambrian series

基本解释

The ore-bearing bed consists of black rocks from Upper Sinian Series to Lower Cambrian Series.
含鑛層爲上震旦統—下寒武統黑色巖系。
People have paid great attention to the "many elements-enriched event" in the Lower Cambrian black shale series in south China.
華南下寒武統黑色巖系“多元素富集事件”受世人矚目。
The black rock series in the Muchang formation of Lower Cambrian contains abundant NiMoV polymetallic deposits and associated precious metal mineralizations in northwest Hunan.
湖南西北部下寒武統木昌組黑色巖系中蘊藏著豐富的鎳鉬釩多金屬鑛牀及其伴生的貴金屬鑛化。