塔里木板块新元古代地层化学蚀变指数研究及其意义

doi:10.3969/j.issn.1000-0569.2007.07.012

CORC > 北京大学 > 地球与空间科学学院

	塔里木板块新元古代地层化学蚀变指数研究及其意义; Study on the chemical index of alteration of neoproterozoic strata in the Tarim plate and its implications
	刘兵 ; 徐备 ; 孟祥英 ; 寇晓威 ; 何金有 ; 卫巍 ; 米合
刊名	岩石学报
	2007
关键词	新元古代化学蚀变指数塔里木板块古气候 neoproterozoic chemical alteration index Tarim plate paleoclimate
DOI	10.3969/j.issn.1000-0569.2007.07.012
英文摘要	本文应用化学蚀变指数(CIA)方法,研究新疆库鲁克塔格地区新元古代地层,并探讨沉积时期的气候环境。贝义西组总体 CIA 值较低,介于51～56之间,具冰期环境特征。照壁山组 CIA 值为60左右,表明气候有所变暖。阿勒通沟组的CIA 值变化范围在48～61之间,顶部突变为69～71,说明阿勒通沟期经历了另一次寒冷事件,并以温暖环境结束。其上的特瑞爱肯组 CIA 值介于49～53之间,说明第三次经历寒冷干燥的气候环境。扎莫克提组,育肯沟组和水泉组的 CIA 均值为65,反映温暖条件下的沉积环境。新元古代末期汉格尔乔克组 CIA 值下降为56,暗示第四次出现寒冷气候环境。以上特征表明新疆库鲁克塔格...; The method of Chemical Index of Alteration (CIA) is applied to the researches of Neoproterozoic strata in Quruktagh and the discussion of paleoclimate changes. The experimental data show that samples of the Beiyixi Formation are characterized by low CIA value, ranging from 51 to 56, implicating the glacier environment. The CIA values of the samples of the Zhaobishan Formation are about 60, showing a warmer paleoclimate. The CIA values of most samples of the Aletonggol Formation range from 48 to 61 and abruptly rise to 69 similar to 71 in the top, showing another cold event during the Altonggol period ended by a warm environment. The CIA values range from 49 to 53 in the following Tereeken Formation, implying the third cold period. The average CIA value of the Zhamoketi, Yukengou and Shuiquan formations is 65, suggesting a warm sedimental condition. The CIA values of the Hankalchough Formation fall to about 56, implicating the forth cold event during the terminal Neoproterozoic. The evidences above show that there were four warn-cold conversions in the Neoproterozoic in Quruktagh, Xinjiang. Among these, the key issue is the cold-warm conversion abruptly happened within the Aletonggol period, which indicates a distinct process from cold to wann and can be regarded as another independent ice age between the Beiyixi and the Tereeken ice ages. This research supports the hypothesis of quartered ice age in the Tarim plate in the Neoproterozoic. By a correlation of the Neoproterozoic ice ages between Tarim and Yangtze plates, the former three of the four ice ages in the Tarim plate can be traced in Yangtze plate.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000249590500012&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 8; 07; 1664-1670; 23
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/49185]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	刘兵,徐备,孟祥英,等. 塔里木板块新元古代地层化学蚀变指数研究及其意义, Study on the chemical index of alteration of neoproterozoic strata in the Tarim plate and its implications[J]. 岩石学报,2007.
APA	刘兵.,徐备.,孟祥英.,寇晓威.,何金有.,...&米合.(2007).塔里木板块新元古代地层化学蚀变指数研究及其意义.岩石学报.
MLA	刘兵,et al."塔里木板块新元古代地层化学蚀变指数研究及其意义".岩石学报 (2007).