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对广西南宁——六景间郁江沿岸出露的早泥盆世郁江组的岩石地层和生物地层特征的分析研究,识别出泥盆纪一个新的生物事件和地质事件——郁江事件。它的首幕发生在Eocostapolygnathus nothoperbonus带的下亚带时段,它的主幕发生时间大致在Nowakia(Dmitriella)praecussor带与Nowakia barrandei带之间,相当于E.nothoperbonus带的上亚带的时段。郁江事件与已知泥盆纪全球事件进行比较,可能是介于兹利科夫底部事件(Bzl)与中Emsian事件(Mem)之间的一个新的事件。
An analysis of the lithostratigraphic and biostratigraphic features of the Early Devonian Yujiang Formation that emerged along the Yujiang River in Nanning, Guangxi, between the six scenic spots, identified a new biological and geological event in the Devonian, the Yujiang event. Its first curtain occurred in the Lower Ebb zone of the Eocosta polygnathus nothoperbonus, with its main curtain occurring roughly between the Nowakia (Dmitriella) praecussor and Nowakia barrandei zones, corresponding to the period of the upper subzone of the E. nothoperbonus zone. The comparison of the Yujiang event with the known Devonian global events may be a new event between the Bzl and the Emsian events (Mem).