| 再论奥陶系与志留系界线的划分与对比 |
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| 引用本文：汪啸风,曾庆銮,周天梅,倪世钊,项礼文,赖才根.1986.再论奥陶系与志留系界线的划分与对比[J].地球学报,8(1):157-175. |
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| 中文摘要:本文基于长江三峡东部地区——宣昌王家湾、分乡和黄花场奥陶系与志留系界线剖面生物地层学,同位素年代学,沉积岩以及古地磁的进一步研究,联系当前世界上一些有代表性的奥陶系与志留系界线剖面资料,再论了全球奥陶纪晚期到志留纪初期笔石带和有关介壳化石的对比以及奥陶系与志留系界线的划分问题,仍然主张将奥陶系与志留系界线划在pers-culptus带底部,并明确指出,就选择国际奥陶系与志留系界线层型剖面而言,宣昌王家湾剖面较之Dob’s Linn剖面更为理想。 |
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| REDISCUSSION ON THE DIVISION AND CORRELATION OF THE ORDOVICIAN-SILURIAN BOUNDARY |
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| Abstract: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). |
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