Implication of the chemical index of alteration as a paleoclimatic perturbation indicator: an example from the lower Neoproterozoic strata of Aksu, Xinjiang, NW China

	Implication of the chemical index of alteration as a paleoclimatic perturbation indicator: an example from the lower Neoproterozoic strata of Aksu, Xinjiang, NW China
	Ding, Haifeng 1; Ma, Dongsheng 1; Yao, Chunyan 1; Lin, Qizhong 1; Jing, Linhai 1
刊名	GEOSCIENCES JOURNAL
	2016
卷号	20 期号:1 页码:13-26
关键词	NONLINEAR DIMENSIONALITY REDUCTION SUPPORT VECTOR MACHINES COLLABORATIVE REPRESENTATION FACE RECOGNITION SUBSPACE FRAMEWORK
通讯作者	Ding, HF (reprint author), Chinese Acad Sci, Key Lab Digital Earth Sci, Inst Remote Sensing & Digital Earth, Beijing 100094, Peoples R China.
英文摘要	The Neoproterozoic successions in the Aksu region, NW China, which lies unconformably on the Precambrian Aksu Group basement, comprises the Qiaoenbrak, Yuermeinak, Sugetbrak, and Chigebrak formations (from bottom to top). The two lowermost units include two distinct glacial diamictites, which indicate distinct episodes of glaciations. We report the major and trace element (including rare earth element) data for the Qiaoenbrak, Yuermeinak, and Sugetbrak formations to identify the paleoclimatic perturbations. The chemical index of alteration (CIA) values show variations from Qiaoenbrak to Yuermeinak, then Sugetbrak formations. The diamictites have relatively lower chemical index of alteration values (45.23-59.64) than inter-, post- and non-glacial sediments (48.28-66.96). This result supported the condition that the diamictites underwent relatively weak chemical weathering from a dry-cold sedimentary environment, which is associated with the sedimentary facies description. The lower Neoproterozoic successions recoded at least two glaciations, one is Qiaoenbrak glaciation and the other is Yuermeinak glaciation.
学科主题	Geology
类目[WOS]	Geosciences, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000372255800002
内容类型	期刊论文
源URL	[http://ir.radi.ac.cn/handle/183411/39380]
专题	遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位	1.Chinese Acad Sci, Key Lab Digital Earth Sci, Inst Remote Sensing & Digital Earth, Beijing 100094, Peoples R China 2.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Jiangsu, Peoples R China 3.Nanjing Inst Geol & Mineral Resources, Nanjing 210016, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Ding, Haifeng,Ma, Dongsheng,Yao, Chunyan,et al. Implication of the chemical index of alteration as a paleoclimatic perturbation indicator: an example from the lower Neoproterozoic strata of Aksu, Xinjiang, NW China[J]. GEOSCIENCES JOURNAL,2016,20(1):13-26.
APA	Ding, Haifeng,Ma, Dongsheng,Yao, Chunyan,Lin, Qizhong,&Jing, Linhai.(2016).Implication of the chemical index of alteration as a paleoclimatic perturbation indicator: an example from the lower Neoproterozoic strata of Aksu, Xinjiang, NW China.GEOSCIENCES JOURNAL,20(1),13-26.
MLA	Ding, Haifeng,et al."Implication of the chemical index of alteration as a paleoclimatic perturbation indicator: an example from the lower Neoproterozoic strata of Aksu, Xinjiang, NW China".GEOSCIENCES JOURNAL 20.1(2016):13-26.