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我们在对广西南丹一大厂地区进行矿田构造及含矿地层研究时,在泥盆系硅质岩中发现大量放射虫化石,初步鉴定为泡沫虫亚目。放射虫个体具薄壳、孔小、构造纤细、放射刺较长、侧刺发育等特征(照片1、2)。在近矿体处,由于热流体影响,有的放射虫侧剌已被铁质交代,壳内个体重结晶。化石薄片经中国地质科学院地质研究所地层古生物专家宋天锐和王乃文鉴定,确认为放射虫岩。
When we conducted a study on orefield structure and ore-bearing strata in a Dachang area in Nandan, Guangxi, a large number of radiolarian fossils were found in the Devonian chert and initially identified as Foamyte subfamilies. Individuals with radio-shelled shells, small holes, fine structure, longer radioactive spines, lateral spines and other characteristics of the development (Photos 1, 2). In the near ore body, due to the influence of thermal fluid, some radiolarian side of the assassination has been iron account, individual shell recrystallization. Fossil flakes by the Institute of Geology, Chinese Academy of Geological Institute of Paleontology Song Tianrui and Wang Naiwen identified as radiolarian rock.