欢迎访问现代地质!

现代地质 ›› 2012, Vol. 26 ›› Issue (3): 589-600.

• 石油地质学 • 上一篇    下一篇

中国碳酸盐风暴岩发育特征及其地质意义

 宋金民1, 杨迪2 李朋威1, 罗平1   

  1. 1  中国石油勘探开发研究院,北京100083; 2  油气藏地质及开发工程国家重点实验室 成都理工大学,四川 成都610059
  • 收稿日期:2012-01-09 修回日期:2012-02-20 出版日期:2012-06-07 发布日期:2012-06-14
  • 作者简介:宋金民,男,博士研究生,1983年出生,矿产普查与勘探专业,主要从事碳酸盐岩沉积与储层研究。Email: songjinmin@sohu.com。
  • 基金资助:

    中国石油股份有限公司项目“塔里木盆地碳酸盐岩野外露头储层地质建模研究”(2008D-070602-02);中国石油勘探开发研究院中青年创新基金项目(2010-B-16-08)。

Development Characteristics and Geological Significance of Carbonate Tempestites in China

 SONG  Jin-Min-1, YANG  Di-2, LI  Peng-Wei-1, LUO  Beng-1   

  1. 1 Research Institute of Petroleum Exploration and Development, PetroChina, Beijing100083, China; 2  State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan610059, China
  • Received:2012-01-09 Revised:2012-02-20 Online:2012-06-07 Published:2012-06-14

摘要:

碳酸盐风暴岩具有重要的古地理和古构造意义,20世纪60-70年代以来,国内外学者就一直对其进行着研究。对比国内外风暴岩研究历程,系统总结近30年来我国碳酸盐风暴岩的研究成果,并归纳风暴岩研究的几点地质意义。我国碳酸盐风暴岩分布在20个省和3个直辖市,层位上分布在中元古界到三叠系,呈现出双峰式分布特征。完整的风暴岩沉积序列从下到上主要有:A—侵蚀底面及砾屑段;B—粒序段;C—平行纹层段;D—丘状纹层段;E1—远源风暴浊流;E2—水平层理泥岩、泥晶灰岩段,其中A段和D段为风暴岩沉积最明显、最有力的证据。结合风暴岩的分布与古地史演化特征,发现古地理环境控制了风暴岩的分布。在此基础上,总结我国碳酸盐风暴岩沉积模式,并阐述我国碳酸盐风暴岩的古纬度与古板块演化意义、古地理意义、地质等时意义和油气矿产意义,以期对碳酸盐风暴岩的研究有所裨益。

关键词: 碳酸盐岩, 风暴岩, 发育特征, 沉积序列, 沉积模式, 地质意义

Abstract:

 The domestic and abroad research on tempestites since 1960s to 70s indicates that the study of tempestites are of great importance in paleogeography and paleotectonic. In this paper, research histories of tempestites between domestic and abroad are compared, research achievements in carbonate tempestites of China in the past thirty years are summarized systematically, and several geological significances are demonstrated. Carbonate tempestites are distributed widely in 20 provinces and 3 directly governed city regions of China, mainly from MidProterozoic to Triassic with double peak feature stratigraphically. And the complete depositional sequences from bottom to top are composed of: A-erosional base and conglomerates, B-graded bedding, C-parallel lamination, D-hummocky crossstratification (HCS), E1-distal storm turbidite, E2-mudstone or micrite limestone with horizontal bedding. Among these, sections A and D are the most distinct and powerful evidences. It has been found that the paleogeographic environment controls the distribution of tempestites, by analyzing the distribution of tempestites and the evolution of paleogeologic history. Based on the above research, the carbonate depositional model of tempestites in China is concluded. At last, the significances of paleolatitude and paleoplate evolution, paleogeographic, geological isochronic and hydrocarbon and mineral resources are discussed, looking forward to giving some help to further research on carbonate tempestites in China.

Key words:  carbonate, tempestite, development characteristic, depositional sequence, depositional model, geological significance