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解放后,我国志留系研究取得了很大进展(见图1 )。近十多年来,地层古生物资料大量增加,相继发表了很多有关志留系的文章。尤其是全国区域地层表的编制,为志留系的详细划分和对比提供了可靠的基础资料。值得注意的是,近年来中国南方志留系的层序变动的总趋向是将原划为中志留世的地层全部归入下志留统,致使有些地区甚至缺失中、上志留统,造成下志留统岩相复杂,厚度增大,生物群面貌更趋复杂化,从而使中国南、北方地层对比发生困难。近年来,笔者在前人工作的基础上系统研究了新疆地区志留系资料,翻阅了有关志留系
After liberation, great progress has been made in the study of Silurianism in our country (see Figure 1). In the past ten years or so, the paleontological data of the strata have increased greatly, and many articles on Silurian have been published one after another. In particular, the compilation of the national regional stratigraphic tables provides a reliable basis for the detailed division and comparison of Silurian systems. It is noteworthy that in recent years, the general tendency of the sequence change of the Silurian in southern China is to classify all the strata originally designated as Middle Proterozoic into the Lower Silurian. As a result, there are even some regions lacking the Middle and Upper Silurian, As a result, the Lower Silurian facies is complex and its thickness is increased, and the biome is more complicated. As a result, it is difficult to compare the stratigraphy of South China and North China. In recent years, based on the work of predecessors, the author systematically studied the Silurian data in Xinjiang and read through the records of Silurian