青海大柴旦地区石炭纪早期珊瑚微礁的形态特征及其环境分析

Mophological characters and environmental analysis of Early Carboniferous coral micro-reefs from Dachaidan area,Qinghai Province

本文记述了青海大柴旦地区石炭纪早期珊瑚微礁与单体的立体标本的形体系列变化。这些变化是对其生存环境诸要素变化幅度的灵敏反映,而且群体微礁与单体珊瑚的形体变化之间可与之相互印证,具有明确的生态与指相意义。鉴于绝大多数珊瑚礁均保存于碳酸盐岩层中,只能通过风化面或切片、难以全方位来观察,这一分析为珊瑚礁形体与环境变化的相关性,提供了可靠的依据与信息。

A series of changes in body shapes of Early Carboniferous stereo coral micro-reefs and single ones from Dachaidan area,Qinghai Province are described in this paper.The changes of the coral micro-reefs and the solitary corals are sensitive to the changes of their living environmental factors,and they can be confirmed by each other.In addition,these changes definitely have ecological and facies-indexed significance.In view of the fact that the vast majority of coral reefs is preserved in carbonate rocks,they can only be observed by weathering surfaces or sections instead of comprehensive observation.This analysis provides reliable basement and information for the correlation between the body shape of coral reefs and the changes of the environment.