REDISCUSSION ON THE DIVISION AND CORRELATION OF THE ORDOVICIAN-SILURIAN BOUNDARY
再论奥陶系与志留系界线的划分与对比

Some of our views on the correlation of graptiolite and some shelly fossil sequence from the latest Ordovician to earlist Silurian and on the division of the Ordovician-Silurian boundary have been presented in the past papers(Wang et al., 1980, 1983a, b; Lai et al., 1982; Xu et al., 1983). The present paper will further inquire into these problems in the light of biostratigraphy, isotope age dating sedimenatry facies and priliminary paleomagnetic research from the Ordovician-Silurian boundary sections of the eastern Yangzi(Yangtze) Gorges(pl.1-2).