【摘要】 <正> 中国的泥盆系主要分布于北方的天山、兴安地槽和南方的扬子准地台以及西部地槽区,中部仅在祁连山一带有少许陆相沉积,共分为八个沉积区和五种地层类型。华南的泥盆系具有多种沉积类型,剖面完整,出露良好,生物群研究比较详细。自1959年以来已相继建立和修正了八个区域性阶:下统分莲花山阶,那高岭阶,郁江阶,塘丁阶(四排阶);中统分纳标阶(应堂阶),东岗岭阶;上统分佘田桥阶,锡矿山阶。西部地槽区泥盆系以普遍发育笔石、竹节石等浮游生物为特征,但构造较复杂,且后期变质作用强更多还原

【Abstract】 The Devonian System of China is chiefly distributed in the Tianshan-Hingan Geosyncline of North China, the Yangzi Paraplatform of South China and in the geosyncline areas of West China. In the central region, Devonian formations are entirely absent in Sino-Korean Paraplatform and Tarim Platform, but along the border of the Tarim Basin and the south and north slopes of Qilianshan, they are represented by continental sequences rich in vertebrate and plant fossils. According to the difference in depositional conditions the Devcnian is divisible into 8 regions: Ⅰ. JungarHingan, Ⅱ. South Tianshan, Ⅲ. Qilianshan, Ⅳ. Longmenshan-Qinling, Ⅴ. South China, Ⅵ. Southeastern China, Ⅶ. West Sichuan-North Xizang and Ⅷ. Himalaya-West Yunnan Region.On the bases of both lithostratic and biostratic characteristics 5 principal types may be further differentiated : 1, Hingan type (Eugeosynclinal facies); 2, Baoxing type (Miogeosynclinal facies); 3, Xiangzhou type (Platformal near-shore facies); 4, Nandan type (Ptformal off-shore facies); 5, Cuifengshantype (Continental facies).The Devonian of South China being known by its various depositional types, has a well defined stratotype. Studies on the Devonian biota have contributed greatly to the understanding of the Devonian of this region over a period of 20 years Beginning from 1959 the Devonian of South China has been classified by the Chinense geologists into 8 stages as follows: Upper Devonian——Hsikuangshanian, She tienchiaonian; Middle Devonian——Tungkanglingian, Napiaonian (Yintangian); Lower Devonian——Tangdingian (Sipainian), Yukiangian, Nakaolingian, Lianhuashanian.The Devonian of the geosyclinal regions of West China is characterized by a faunizone of graptolites and tentaculites. Having been influenced by polygene tectonic movements, the rocks were locally deeply metamorphosed. The Devonian biota of the Junggar-Hingan Region is essentially an endemic one, but it is associated with a few European and North American elements. Marine pyroclastics are the principal rocks. The continental Devonian of China is unique esspecially in the light of its vertobrate contents. The red sandstone of the Early Devonian is well developed, and intercalated with argillaceous limestone and mudstone. This sequence is rich in East Asiatic faunal elements including both agnathans and fishes, such as Galeaspis, Polybranchiaspis, Yunnanolepis, etc. which form a typical endemic fauna. In the Middle Devonian, the principal rocks consist of red and light colour quartzose sandstone and mudstone in Southeastern China, with some red sandstone in both South and North China, while the fauna and flora are of cosmopolitan character. The vertebrate taxa appeared in geological ages which differ from those of similar taxa in other regiona of the world, for example, Asterolepis and Bothriolepis.This paper was read in the International Sysmposium on the Devonian System 1978 (P. A. D. D. 78), held in Bristol, Britain.更多还原