... a lower shelf 较低的棚架 the Lower Devonian 下泥盆纪 the lower reaches of a river 河川的下游地区 ...
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According to lithostratigraphic units, Devonian was divided into the Lower Devonian Malassu Formation and the Middle Devonian Kourou Moody Formation.
根据岩石地层单位将该区泥盆系划分为下泥盆统马拉苏组和中泥盒统库鲁木迪组。
The Pb-Zn deposit in Northeastern Guangxi are occurred under the surface of unconformity between the Cambrican-Ordovician and the lower Devonian , and were formed under complex conditions.
老厂海洋山产于寒武—奥陶系与泥盆系不整合面之下的铅锌矿床， 形成条件复杂， 矿床成因独特。
The lead-zinc deposits occur in the Lower Silurian Meiziya Formation, Middle Silurian Shuanghezhen Formation, Middle Devonian Dafenggou Formation and Upper Devonian Nanyangshan Formation.
铅锌矿赋存于下志留统梅子垭组、中志留统双河镇组及中泥盆统大枫沟组、上泥盆统南羊山组；
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