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中国早寒武世岩相古地理
引用本文:冯增昭,彭勇民,金振奎,鲍志东.中国早寒武世岩相古地理[J].古地理学报,2002,4(1):1-12.
作者姓名:冯增昭  彭勇民  金振奎  鲍志东
作者单位:石油大学,北京100083
基金项目:中国石油天然气总公司科研计划正式项目“中国寒武纪和奥陶纪岩相古地理研究及编图” (94科字第 6 9号 )
摘    要:本文中的中国主要指我国的大陆、海南岛及台湾等地区的陆地部分。本文由中国早寒武世早期及晚期的岩相古地理图2幅及相应的文字论述组成。这两幅岩相古地理图的最大特征是“两槽和三台相间分布”。两槽即天山北山蒙辽吉槽地和昆仑秦岭槽地,三台即准噶尔蒙兴槽地、塔里木柴达木华北台地和西藏华南台地。两个槽地与三个台地之间的界限是根据大地构造、地层、岩石、岩相等资料综合判断而定的,绝大部分是比较确切的,有的地方是推断的。天山北山槽地可分出次级岩相古地理单元,其他槽地的次级岩相古地理单元尚难以划分。在三个台地中,华南、华北和西北地区的研究程度较高,它们的次级岩相古地理单元的划分均有确切的定量资料和图件为依据,是定量的,而且还能把早寒武世早期和晚期的岩相古地理区分开;其他地区的研究程度较低,难以再划分次级古地理单元,其古地理图都只能是定性的。这种研究程度有差异的、定量和定性兼有的、全国范围的岩相古地理图,既反映笔者等的研究成果,也反映我国当前地质工作的研究程度,优缺兼有,实虚共存。敬请读者指教。

关 键 词:中国  早寒武世  岩相古地理  槽地  台地  大地构造
文章编号:1671-1505(2002)01-0001-12

LITHOFACIES PALAEOGEOGRAPHY OF THE EARLY CAMBRIAN IN CHINA
Feng Zengzhao Peng Yongmin Jin Zhenkui Bao Zhidong University of Petroleum,Beijing.LITHOFACIES PALAEOGEOGRAPHY OF THE EARLY CAMBRIAN IN CHINA[J].Journal of Palaeogeography,2002,4(1):1-12.
Authors:Feng Zengzhao Peng Yongmin Jin Zhenkui Bao Zhidong University of Petroleum  Beijing
Institution:University of Petroleum, Beijing 100083
Abstract:Two lithofacies palaeogeography maps of China of the Early and Late Ages of the Early Cambrian and corresponding explanations are given. The most important characteristics of these two maps are "two troughs alternating with three platforms". The two troughs are the Tianshan-Beishan-Mongolia-Liaoning-Jilin Trough and the Kunlun-Qinling Trough. The three platforms are the Junggar-Mengolia-Xinganling Platform,Tarim-Qaidam-North China Platform, and Tibet-South China Platform. The boundaries of these two troughs and three platforms are defined on the basis of tectonics, strata, rocks, lithofacies and other data. Most boundaries are accurate, and those of some places are inferred. The Tianshan-Beishan Trough can be further divided into secondary lithofacies palaeogeography units, but other troughs are difficult to be subdivided. Among the platforms, South China, North China and Northwest China are well studied, their secondary lithofacies paleogeography units are defined on the basis of accurate quantitative data and quantitative maps, and the lithofacies paleogeography of the Early Age of the Early Cambrian can be differentiated from that of the Late Age. Other areas are less studied, and the secondary lithofacies palaeogeography units are difficult to be delineated out. The lithofacies palaeogeography maps of these areas are qualitative. Therefore, these two lithofacies paleogeography maps of the Early Cambrian of China are different in study degree for different areas, and are quantitative in some areas and qualitative in others. These maps reflect both the research achievements of the present writers and the present geological study degree of our country.
Keywords:China  Early Cambrian  lithofacies palaeogeography  trough  platform  quantification
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