early-middle cambrian 早中寒武世
Early -middle Cambrian 早中寒武世
Middle Cambrian-Early Ordovician 中寒武世
middle-upper cambrian 中寒武世晚期 ; 中晚寒武世
Early middle Cambrian rhyolites from Baiyin Mining Field were considered to have resulted from magmatism of continental rift.
白银厂矿田早—中寒武世流纹岩被认为是大陆裂谷环境或洋内弧岩浆作用的产物。
The palaeogeography and the initial stratal thickness of the Middle Cambrian in the Western Hills of Beijing are restored through the finite strain analysis in this paper.
本文从有限变形分析入手，着重恢复北京西山中寒武世古地理原态及相应的地层初始厚度。
The first generational northwest folds were fault band folds, formed during Middle Cambrian to Devonian, which were "under water uplift", distributed over the whole studied area.
第一期北西向褶皱构造为轴向北西的断层转折褶皱，形成于中寒武世—泥盆纪，它们当时都是一些“水下隆起” ，在全区均有分布。
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