干旱区生态环境知识资源中心(Arid): Hydrochemical Relationship Between Shallow Fluoride and Underlying Paleozoic Carbonates Groundwaters

Arid

DOI	10.1111/gwat.12985
	Hydrochemical Relationship Between Shallow Fluoride and Underlying Paleozoic Carbonates Groundwaters
	Dou, Yan 1; Howard, Ken 2; Yang, Liwei 3; Wang, Dong 4; Guo, Li 4
通讯作者	Dou, Yan
来源期刊	GROUNDWATER
ISSN	0017-467X
EISSN	1745-6584
出版年	2020
卷号	58 期号:6 页码:1000-1011
英文摘要	In the arid to semi-arid district of Chengcheng, Weinan City, in central Shaanxi Province, diminishing groundwater reserves in the shallow Quaternary (QLB) aquifer and elevated fluoride in the similarly shallow Permo-Triassic (PTF) aquifer, have promoted interest in the development of groundwater resources in the deep but poorly understood Cambrian-Ordovician carbonate aquifer system (COC). To investigate the origin of the COC groundwaters and the relationship between the deep and shallower systems, a hydrochemical study was undertaken involving 179 major and minor ion analyses, 39 stable isotope analyses (delta D and delta O-18), and 14 carbon isotope analyses (C-14 and delta C-13). PHREEQC 3.0 was used to investigate mixing. Hydrochemical data support the presence of a well-connected regional flow system extending southwards from the more mountainous north. Stable isotope data indicate that the COC groundwaters originate as soil zone infiltration, under a much cooler regime than is found locally today. This is confirmed by C-14, which indicates the groundwater to be palaeowater recharged during the late Pleistocene (similar to 10-12 ka B.P.). The presence of nitrate in the COC groundwaters suggests leakage from overlying shallow aquifers currently provides an additional source of COC recharge, with major faults possibly providing the primary pathways for downward vertical flow.
类型	Article
语种	英语
国家	Peoples R China ; Canada
收录类别	SCI-E
WOS记录号	WOS:000514237800001
WOS关键词	DEEP GROUNDWATER ; SURFACE-WATER ; QUALITY ; AREA ; CHLORIDE ; ISOTOPE
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314653
作者单位	1.Changan Univ, Sch Environm Sci & Engn, Key Lab Subsurface Hydrol & Ecol Effects Arid Reg, Minist Educ, 126 Yanta Rd, Xian 710054, Peoples R China; 2.Univ Toronto Scarborough, Dept Phys & Environm Sci, 1265 Mil Trail, Toronto, ON M1C 1A4, Canada; 3.Changan Univ, Sch Environm Sci & Engn, 126 Yanta Rd, Xian 710054, Peoples R China; 4.Xian Ctr Geol Survey, CGS, Xian 710054, Peoples R China
推荐引用方式 GB/T 7714	Dou, Yan,Howard, Ken,Yang, Liwei,et al. Hydrochemical Relationship Between Shallow Fluoride and Underlying Paleozoic Carbonates Groundwaters[J],2020,58(6):1000-1011.
APA	Dou, Yan,Howard, Ken,Yang, Liwei,Wang, Dong,&Guo, Li.(2020).Hydrochemical Relationship Between Shallow Fluoride and Underlying Paleozoic Carbonates Groundwaters.GROUNDWATER,58(6),1000-1011.
MLA	Dou, Yan,et al."Hydrochemical Relationship Between Shallow Fluoride and Underlying Paleozoic Carbonates Groundwaters".GROUNDWATER 58.6(2020):1000-1011.