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Gypsum as a potential tracer of earthquake: a case study of the Mw7.8 earthquake in the East Anatolian Fault Zone, southeastern Turkey.

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Title: Gypsum as a potential tracer of earthquake: a case study of the Mw7.8 earthquake in the East Anatolian Fault Zone, southeastern Turkey.
Authors: Luo, Zebin1 (AUTHOR), Zhou, Xiaocheng2,3 (AUTHOR), Xu, Yueren2 (AUTHOR), Liang, Peng2 (AUTHOR), Zhang, Huiping4 (AUTHOR), Liang, Jinlong5 (AUTHOR), Zeng, Zhaojun2 (AUTHOR), Yan, Yucong3 (AUTHOR), Gong, Zheng6 (AUTHOR), Wang, Shiguang6 (AUTHOR), Li, Chuanyou4 (AUTHOR), Ren, Zhikun4 (AUTHOR), Yu, Jingxing4 (AUTHOR), Ma, Zifa4 (AUTHOR), Li, Junjie4 (AUTHOR)
Source: Hydrology & Earth System Sciences Discussions. 12/20/2024, p1-34. 34p.
Subject Terms: *Earthquakes, *Fault zones, *Water-rock interaction, *Isotopic analysis, *Water depth, *Chlorine, *Alkaline earth metals
Abstract: Obvious macroscopic anomalies of geothermal fluids were observed before and after the Mw 7.8 earthquake in Turkey. In order to find out the relationship between geothermal fluid anomalies and earthquakes, we performed a systematic hydrogeochemistry and isotopic analysis of the geothermal fluids in the East Anatolian Fault Zone (EAFZ). The results show that these geothermal fluids were reconstructed (including: energy and materials) by earthquakes. Based on chlorine – enthalpy model, the temperature of the deep geothermal fluid has been increasing to 382 °C on the strength of the energy released by the seismic activity. However, the information of the deep geothermal fluid was eventually covered due to the infiltration of a large amount of shallow cold water after the earthquake. The abnormal concentrations of Ca2+ (54.04~501.58 mg/L), Mg2+ (6.58~116.20 mg/L), SO42– (6.37~287.74 mg/L), Sr (34.78~3244.8 μg/L), and Ba (1.89~196.48 μg/L) in geothermal water shown that the geothermal water has undergone complex water-rock interaction processes such as gypsum, calcite, dolomite, anorthite and serpentinization. Specially, significant gypsum dissolution was observed at HS05, HS09 and HS14 before and after the earthquake, suggesting that the earthquake broke the balance of water-rock reaction and promoted the dissolution of gypsum. Combined with geological background and previous studies, we propose that shallow sedimentary minerals, such as gypsum, have the potential to be used as earthquake warning indicators. However, shallow minerals are controlled by many external factors (e.g., temperature, pressure, climatic conditions, seasonal changes etc.), which greatly weakens their practical value in earthquake early warning. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 181807735
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Gypsum as a potential tracer of earthquake: a case study of the <em>Mw</em>7.8 earthquake in the East Anatolian Fault Zone, southeastern Turkey.
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  Data: <searchLink fieldCode="AR" term="%22Luo%2C+Zebin%22">Luo, Zebin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Xiaocheng%22">Zhou, Xiaocheng</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Yueren%22">Xu, Yueren</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liang%2C+Peng%22">Liang, Peng</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Huiping%22">Zhang, Huiping</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liang%2C+Jinlong%22">Liang, Jinlong</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zeng%2C+Zhaojun%22">Zeng, Zhaojun</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Yucong%22">Yan, Yucong</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gong%2C+Zheng%22">Gong, Zheng</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Shiguang%22">Wang, Shiguang</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Chuanyou%22">Li, Chuanyou</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ren%2C+Zhikun%22">Ren, Zhikun</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yu%2C+Jingxing%22">Yu, Jingxing</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ma%2C+Zifa%22">Ma, Zifa</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Junjie%22">Li, Junjie</searchLink><relatesTo>4</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Hydrology+%26+Earth+System+Sciences+Discussions%22">Hydrology & Earth System Sciences Discussions</searchLink>. 12/20/2024, p1-34. 34p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Earthquakes%22">Earthquakes</searchLink><br />*<searchLink fieldCode="DE" term="%22Fault+zones%22">Fault zones</searchLink><br />*<searchLink fieldCode="DE" term="%22Water-rock+interaction%22">Water-rock interaction</searchLink><br />*<searchLink fieldCode="DE" term="%22Isotopic+analysis%22">Isotopic analysis</searchLink><br />*<searchLink fieldCode="DE" term="%22Water+depth%22">Water depth</searchLink><br />*<searchLink fieldCode="DE" term="%22Chlorine%22">Chlorine</searchLink><br />*<searchLink fieldCode="DE" term="%22Alkaline+earth+metals%22">Alkaline earth metals</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Obvious macroscopic anomalies of geothermal fluids were observed before and after the <em>Mw</em> 7.8 earthquake in Turkey. In order to find out the relationship between geothermal fluid anomalies and earthquakes, we performed a systematic hydrogeochemistry and isotopic analysis of the geothermal fluids in the East Anatolian Fault Zone (EAFZ). The results show that these geothermal fluids were reconstructed (including: energy and materials) by earthquakes. Based on chlorine – enthalpy model, the temperature of the deep geothermal fluid has been increasing to 382 °C on the strength of the energy released by the seismic activity. However, the information of the deep geothermal fluid was eventually covered due to the infiltration of a large amount of shallow cold water after the earthquake. The abnormal concentrations of Ca2+ (54.04~501.58 mg/L), Mg2+ (6.58~116.20 mg/L), SO42– (6.37~287.74 mg/L), Sr (34.78~3244.8 μg/L), and Ba (1.89~196.48 μg/L) in geothermal water shown that the geothermal water has undergone complex water-rock interaction processes such as gypsum, calcite, dolomite, anorthite and serpentinization. Specially, significant gypsum dissolution was observed at HS05, HS09 and HS14 before and after the earthquake, suggesting that the earthquake broke the balance of water-rock reaction and promoted the dissolution of gypsum. Combined with geological background and previous studies, we propose that shallow sedimentary minerals, such as gypsum, have the potential to be used as earthquake warning indicators. However, shallow minerals are controlled by many external factors (e.g., temperature, pressure, climatic conditions, seasonal changes etc.), which greatly weakens their practical value in earthquake early warning. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=181807735
RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.5194/hess-2024-395
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 34
        StartPage: 1
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      – SubjectFull: Earthquakes
        Type: general
      – SubjectFull: Fault zones
        Type: general
      – SubjectFull: Water-rock interaction
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      – SubjectFull: Isotopic analysis
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      – SubjectFull: Water depth
        Type: general
      – SubjectFull: Chlorine
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      – SubjectFull: Alkaline earth metals
        Type: general
    Titles:
      – TitleFull: Gypsum as a potential tracer of earthquake: a case study of the <em>Mw</em>7.8 earthquake in the East Anatolian Fault Zone, southeastern Turkey.
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              Text: 12/20/2024
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