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Zonation and correlation of the earliest Ordovician graptolites from Hunjiang, Jilin province, China

1987; Volume: 35; Linguagem: Inglês

10.37570/bgsd-1986-35-26

2245-7070

Xiaofeng Wang, Bernd D. Eerdtmann,

Silicon Effects in Agriculture

On the basis of studies of the graptolite succession at the Xiaoyangqiao, Qinggouzi and Muxiantogou sec­tions in the vicinity of Dayangcha village and near Hunjiang City in SW Jilin Province four graptolite zo­nes can be recognized in the 'Yeli Formation': 1. Rhabdinopora parabola Zone, 2. Anisograptus Zone, 3. Psigraptus Zone and 4. Adelograptus-Clonograptus Zone. The correlation of each zone with the equiva­lent zone and the Cambrian-Ordovician boundary both in China and in other areas of the world are dis­cussed.