Mineralogical, crystallographic, and isotopic constraints on the precipitation of aragonite and calcite at Shigiang and other hot springs in Yunnan Province, China
Jones, Brian1; Peng, Xiaotong2
2016-11-01
发表期刊SEDIMENTARY GEOLOGY
卷号345页码:103-125
摘要Two active spring vent pools at Shiqiang (Yunnan Province, China) are characterized by a complex array of precipitates that coat the wall around the pool and the narrow ledges that surround the vent pool. These precipitates include arrays of aragonite crystals, calcite cone-dendrites, red spar calcite, unattached dodecahedral and rhombohedral calcite crystals, and late stage calcite that commonly coats and disguises the earlier formed precipitates. Some of the microbial mats that grow on the ledges around the pools have been partly mineralized by microspheres that are formed of Si and minor amounts of Fe. The calcite and aragonite that are interspersed with each other at all scales are both primary precipitates. Some laminae, for example, change laterally from aragonite to calcite over distances of only a few millimetres. The precipitates at Shiqiang are similar to precipitates found in and around the vent pools of other springs found in Yunnan Province, including those at Gongxiaoshe, Zhuyuan, Eryuan, and Jifei. In all cases, the delta D-water and delta(18)O(wate)r indicate that the spring water is of meteoric origin. These are thermogene springs with the carrier CO2 being derived largely from the mantle and reaction of the waters with bedrock. Variations in the delta C-13(travertine) values indicate that the waters in these springs were mixed, to varying degrees, with cold groundwater and its soil-derived CO2. Calcite and aragonite precipitation took place once the spring waters had become supersaturated with respect to CaCO3, probably as a result of rapid CO2 degassing. These precipitates, which were not in isotopic equilibrium with the spring water, are characterized by their unusual crystal morphologies. The precipitation of calcite and aragonite, seemingly together, can probably be attributed to microscale variations in the saturation levels that are, in turn, attributable to microscale variations in the rate of CO2 degassing. (C) 2016 Elsevier B.V. All rights reserved.
文章类型Article
关键词Hot Springs Calcite Aragonite Opal-a Isotopes Dendrites
WOS标题词Science & Technology ; Physical Sciences
DOI10.1016/j.sedgeo.2016.09.007
收录类别SCI
语种英语
关键词[WOS]REHAI GEOTHERMAL-FIELD ; BRITISH-WEST-INDIES ; KENYA RIFT-VALLEY ; SOUTHWESTERN CHINA ; LAKE BOGORIA ; DEPOSITIONAL FACIES ; GRAND CAYMAN ; NEW-ZEALAND ; FRACTIONATION ; OXYGEN
WOS类目Geology
WOS记录号WOS:000388152700007
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.idsse.ac.cn/handle/183446/1659
专题深海科学研究部_深海地质与地球化学研究室
作者单位1.Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB T6G 2E3, Canada
2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
推荐引用方式
GB/T 7714
Jones, Brian,Peng, Xiaotong. Mineralogical, crystallographic, and isotopic constraints on the precipitation of aragonite and calcite at Shigiang and other hot springs in Yunnan Province, China[J]. SEDIMENTARY GEOLOGY,2016,345:103-125.
APA Jones, Brian,&Peng, Xiaotong.(2016).Mineralogical, crystallographic, and isotopic constraints on the precipitation of aragonite and calcite at Shigiang and other hot springs in Yunnan Province, China.SEDIMENTARY GEOLOGY,345,103-125.
MLA Jones, Brian,et al."Mineralogical, crystallographic, and isotopic constraints on the precipitation of aragonite and calcite at Shigiang and other hot springs in Yunnan Province, China".SEDIMENTARY GEOLOGY 345(2016):103-125.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Jones, Brian]的文章
[Peng, Xiaotong]的文章
百度学术
百度学术中相似的文章
[Jones, Brian]的文章
[Peng, Xiaotong]的文章
必应学术
必应学术中相似的文章
[Jones, Brian]的文章
[Peng, Xiaotong]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。