华南泥盆系－石炭系界线附近的珊瑚、有孔虫和牙形类及其地层意义

The coral, foraminifer and conodont biostratigraphy near the Devonian-Carboniferous boundary in South China

华南地区岩关阶依皱纹珊瑚可分为Ｃｅｒｉｐｈｙｌｌｕｍ－Ｃａｎｉｎｏｐｈｙｌｌｕｍｐａｔｕｌｕｍ（Ｇ－Ｃ）组合带、Ｃｙｓｔｏｐｈｙｒｅｎｔｉｓ（Ｃ）延限带和Ｐｓｅｕｄｏｕｒａｌｉｎｉａ（Ｐ）延限带及相应的有孔虫带和牙形类带（表１）。与法国一比利时盆地、英国和俄罗斯奥莫朗地区有关生物地层相比，Ｃ－Ｃ组合带与法一比盆地的ＲＣ１间隔带下部和英国的Ｋｍ－Ｋ１亚带大致相当；Ｃ延限带与ＲＣ１间隔带上部至ＲＣ２间隔带下部和英国的Ｋ２－Ｚ１亚带对比；Ｐ延限带与ＲＣ２间隔带上部至ＲＣ３奥佩尔带和英国的Ｚ方亚带至γ层对比。若以Ｐ延限带或所谓的＂Ｃ－Ｐ间隔带＂做为中国石炭系与泥盆系的分界标志，则石炭系的底界过于偏高。笔者认为Ｃ－Ｃ组合带或邵东组属于早石炭世地层。

The Yanguanian in South China can be divided into Ceriphyllum-Caninophyllum patulum (C-C) Assemblage Zone, Cystophrentis (C) Range Zone and Pseudouralinia (P) Range Zone upon rugose corals, and the corresponding foraminifer Zones and conodont Zones (Table 1). Based on the relationships between coral, foraminifer and conodont biostratigraphy in Franco-Belgian Basin,Britain and Omolon area of USSR, it is obvious that C-C rugose coral Assemblage Zone of South China is approximately equivalent to the lower part of rugose coral Zone RC1 in Franco-Belgian Basin and coral Km to K1 Subzone of Britain; rugose coral Range Zone C of South China may be correlated with the upper part of rugose coral Zone RC1 to the lower part of rugose coral Zone RC2 and coral K2 to Z1 Subzone in Britain; rugose coral Range Zone P of South China may be correlated with the upper part of rugose coral Zone RC2 to RC3 Oppel Zone in Franco- Belgian Basin and coral Z2 Subzone to γ bed of Britain. Very Obviously, if the rugose coral P Arange Zone or the socalled 'C P interval Zone' wase taken as the mark for the Devonian-Carboniferous boundary in China, the base of Carboniferous would be too high. The autheor considers that the C-C Assemblage Zone or the Shaodong Foramtion is still of Early Carboniferous age.