石油与天然气地质 ›› 1982, Vol. 3 ›› Issue (3): 211-222.doi: 10.11743/ogg19820303

• 论文 • 上一篇    下一篇

海南岛和西沙群岛现代珊瑚礁基本沉积相带

王国忠, 吕炳全, 全松青   

  1. 同济大学
  • 收稿日期:1981-04-14 出版日期:1982-09-25 发布日期:2012-01-16

THE FUNDAMENTAL SEDIMENTARY FACIES OF MODERN CORAL REEFS IN HAINAN AND XISHA ISLANDS

Wang Guozhong, Lu Bingquan, Quan Songqing   

  1. Department of Marine Geology, Tongji University
  • Received:1981-04-14 Online:1982-09-25 Published:2012-01-16

摘要:

1978年以来,作者在海南岛和西沙群岛进行了20余条现代珊瑚礁剖面的现场测量和调查,潜水深度一般小于10米,个别剖面达25米。综合野外室内资料,归纳出海南岛和西沙群岛现代珊瑚礁沉积模式。本文在叙述各相带的水动力条件、地貌形态、生物分布等沉积环境的同时,着重于沉积物和沉积岩特征的探讨。

Abstract:

On the basis of investigation of modern coral reefs of Hainan and Xisha Islands of China,fundamental sedimentary facies of these regions have been identified,and the diagnostic criteria for the discrimination of various reef facies are proposed.From the fore- to the back-reefs,the sedimentary facies zones can be sbdivided as follows:the epeiric sea sand-mud facies,the fore-reef colluvial facies,the protogenous reef facies,the marginal reef conglomeratic facies,the reef flat sandy-conglomeratic facies,the sand cay(barrier)conglomerate-sandy facies and the lagoonal sand-mud facies.The differences between various types of coral reefs are in relation with the associations and the distribution of these sedimentary facies.It has been realized that submarine relief is the main factor in determining the patterns and sizes of the sedimentary facies zones.The sediments of coral reefs in the area of the Pacific-Indian Oceans are predominatly composed of the algal debris,and yet sediments of coral reefs in the South China Sea are predominatly composed of Petraiidae.