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现代地质 ›› 2022, Vol. 36 ›› Issue (02): 494-506.DOI: 10.19657/j.geoscience.1000-8527.2022.004

• 水资源与环境地质 • 上一篇    下一篇

河北北部四处温泉的水化学特征及成因分析

王艺璇1(), 周训1,2(), 陈梦颖1, 马静茹1, 海阔1, 肖萌1, 尚子琦1, 张颖1, 余鸣潇1   

  1. 1. 中国地质大学(北京) 水资源与环境学院,北京 100083
    2. 中国地质大学(北京) 地下水循环与环境演化教育部重点实验室,北京 100083
  • 收稿日期:2021-11-18 修回日期:2022-02-22 出版日期:2022-04-10 发布日期:2022-06-01
  • 通讯作者: 周训
  • 作者简介:周训,男,教授,博士生导师,1963年出生,水文地质学专业,从事地下热水(温泉)、海岸带地下水、地下卤水(盐泉)、矿泉水、地下水循环及其模拟等研究工作。Email: zhouxun@cugb.edu.cn
    王艺璇,女,硕士研究生,1998年出生,水文地质学专业,从事水文地质学等研究工作。Email: 18810819709@163.com
  • 基金资助:
    国家自然科学基金项目(42172269);国家自然科学基金项目(41772261)

Hydrochemical Characteristics and Formation of Four Hot Springs in Northern Hebei

WANG Yixuan1(), ZHOU Xun1,2(), CHEN Mengying1, MA Jingru1, HAI Kuo1, XIAO Meng1, SHANG Ziqi1, ZHANG Ying1, YU Mingxiao1   

  1. 1. School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China
    2. MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences, Beijing 100083, China
  • Received:2021-11-18 Revised:2022-02-22 Online:2022-04-10 Published:2022-06-01
  • Contact: ZHOU Xun

摘要:

以河北北部承德地区的4处温泉,漠河沟温泉(A10)、三道营温泉(A11)、山湾子温泉(A12)和北大坝温泉(A13)为研究对象,根据2010年与2018年的温泉水样测试数据,分析温泉的水化学特征,并总结其成因模式。研究区出露地层主要有中新元古界、二叠系、三叠系、侏罗系、白垩系和新近系以及第四系,并伴随有大量侵入岩岩体。温泉的出露温度为36~75 ℃,pH值为7.2~8.2,TDS均小于1 g/L。研究区温泉阳离子均以Na+占绝对优势,毫克当量百分数在90%以上,阴离子主要以HC O 3 -和S O 4 2 -为主,4处温泉的水化学类型分别为SO4·HCO3-Na型、HCO3·SO4-Na型、HCO3-Na型和SO4·HCO3-Na型,且温泉的偏硅酸和F-含量高。研究区温泉稀土元素总含量(∑REEs)为0.030~15.525 μg/L,主要以碳酸盐络合物和F的络合物形式存在;地下热水的稀土元素球粒陨石标准化配分模式较为平缓,轻稀土元素略显富集。研究区温泉水补给主要源于大气降水,利用 SiO2 温标估算的温泉地下热储温度为85~125 ℃,地下热水经深循环后通过接触带、破碎带或导水断裂上升出露地表。

关键词: 温泉, 稀土元素, 同位素, 热储温度, 河北

Abstract:

This study examined four hot springs in northern Hebei, namely Mohegou (A10), Sandaoying (A11), Shanwanzi (A12) and Beidaba (A13). Through analyzing hot-spring water samples in 2010 and 2018, we unravel the hydrochemical characteristics of the springs and elucidate their formation. Local stratigraphy comprises mainly the Mesoproterozoic, Permian, Triassic, Jurassic, Cretaceous, Neogene and Quaternary sequences, with large number of plutonic units. The hot spring temperatures range from 26 to 75 ℃, and the pH and TDS is 7.2-8.2 and < 1 g/L, respectively. The cations of the local hot springs are dominated (> 90%) by Na+, whilst the anions are dominated by HC O 3 - and S O 4 2 -. The hydrochemical types of the four hot springs are of SO4·HCO3-Na, HCO3·SO4-Na, HCO3-Na and SO4·HCO3-Na type. The local hot springs have generally high H2SiO3 and F- concentrations, and their total REE contents range from 0.030 to 15.525 μg/L, existing mainly as carbonate and fluorine complexes. The chondrite-normalized REE patterns of the hot water samples are relatively gentle with LREE enrichment. The local hot springs are mainly recharged by atmospheric precipitation, and the geothermal reservoir temperatures are estimated to be 85-125 ℃ with the SiO2 geothermometer. The thermal groundwater may have undergone deep circulation, rises along the contact zone, fracture zones and faults, and emerges as hot springs on the land surface.

Key words: hot spring, rare earth element, isotope, geothermal reservoir temperature, Hebei

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