摘要
20世纪中国古生代放射虫研究取得三方面成绩 :1.研究地域涉及全国大部分省区。除东北三省、河北、山西、山东、海南、台湾外 ,古生代放射虫已在我国 19个省区发现。时代从晚寒武世至晚二叠世长兴期 ;2 .研究领域逐步扩大 ,确立了三种不同的放射虫岩相类型 ,洋盆相区以广西钦州板城最为典型 ,从晚泥盆世弗拉斯期 -晚二叠世长兴早期共建立 18个化石带 ;岛弧相区以云南西部昌宁 -孟连地体作代表 ,从中泥盆世吉维特期 -晚二叠世长兴期发育 12个化石带 ;台盆相区以苏皖地区中二叠世孤峰组放射虫研究得较好 ,建立 3个化石带 ,这些放射虫化石带 ,与洋盆相区 ,岛弧相区同时代的带基本上相似或相同 ;3.中国 4条主要蛇绿岩带都发现了放射虫硅质岩和放射虫动物群 ,这对蛇绿岩带的形成时代和板块碰撞时间的确定提供了有力的证据。最后 。
In the last century Paleozoic radiolarian research of China has achieved three major advances. ①Research areas extend to most parts of China. Paleozoic radiolarians are found in 19 provinces in China except three provinces of Northeast, Hebei, Shanxi, Shandong, Hainan and Taiwan, ranging from Late Cambrian to Late Permian Changsingian in age; ②Research scopes have gradually expanded. Three radiolarian facies types are established. Eighteen radiolarian zones are erected in the Ocean Basin facies type in Bancheng town, Qingzhou, Southeast Guangxi, ranging from Late Devonian Frasnian to Late Permian early Changhsingian in age; Twelve radiolarian zones are considered as representative of the Island-Arc facies type in Changning-Menglian terrane, ranging from Middle Devonian Givetian to Late Permian Changhsingian in age; Middle Permian Kuhfeng Formation belonging to the platform basin facies type contains three radiolarian zones which are similar or the same to those of the Ocean Basin and the Island-Arc facies types of corresponding age. ③The radiolarites and radiolarian faunas discovered in the four important ophiolite belts of China are regarded as a powerful evidence for determining the age of the ophiolite belts and the collisional time of various plates. Finally in this paper, five important research directions of Paleozoic radiolarians of China are proposed for the new century.
出处
《微体古生物学报》
CSCD
北大核心
2001年第4期313-320,共8页
Acta Micropalaeontologica Sinica
基金
中国科学院南京地质古生物研究所现代地层和古生物开放实验室
国家重点基础研究发展规划项目 ( G2 0 0 0 0 7770 0 )共同资助
