Discovery of hydrothermal venting community at the base of Cambrian barite in Guizhou Province,Western China: Implication for the Cambrian biological explosion  

作　　者：Ruidong Yang Huairui Wei Miao Bao Wei Wang QiangWang Xiaodong Zhang Ling Liu 

机构地区：[1]Graduate School of Guizhou University, Guiyang 550025, China

出　　处：《Progress in Natural Science:Materials International》2008年第1期65-70,共6页自然科学进展·国际材料（英文版）

基　　金：This work was supported by National Natural Science Foundation of China(Grant No.40462001);the Guizhou Provincial Foundation for Excellent Scientific and Technological Talents;the Doctor Foundation of Guizhou University.The authors thank Prof.Zhang Chuanlin and Wang Zhiyun for their help in polishing the English of this paper.

摘　　要：The barite deposit in the Niutitang Formation of Lower Cambrian, in Tianzhu County, Guizhou Province, western China, is a superlarge barite deposit with about 2 × 10^9 tons of reserves. Mineral, petrological and geochemical studies reveal that this barite deposit belongs to a hydrothermal sedimentary deposit. Microscopic observations indicate that a lot of algae, sponge spicules and tube-type fossils are well-preserved in this barite section, and moreover, those fossils share most characteristics of the deep-sea hydrothermal venting community in the modern Pacific. We suggest that the hydrothermal venting community was thriving in hydrothermal vent in early Cambrian, and it is of great significance for elucidating the geological background of the ＂Cambrian explosion＂.The barite deposit in the Niutitang Formation of Lower Cambrian,in Tianzhu County,Guizhou Province,western China,is a super- large barite deposit with about 2·109tons of reserves.Mineral,petrological and geochemical studies reveal that this barite deposit belongs to a hydrothermal sedimentary deposit.Microscopic observations indicate that a lot of algae,sponge spicules and tube-type fos- sils are well-preserved in this barite section,and moreover,those fossils share most characteristics of the deep-sea hydrothermal venting community in the modern Pacific.We suggest that the hydrothermal venting community was thriving in hydrothermal vent in early Cam- brian,and it is of great significance for elucidating the geological background of the‘‘Cambrian explosion’’.China Press.All rights reserved.

关 键 词：Hydrothermal community BARITE CAMBRIAN GUIZHOU 

分 类 号：P534[天文地球—古生物学与地层学]