台湾新养女湖泥火山流体地球化学特征与流体来源
台湾新养女湖泥火山流体地球化学特征与流体来源
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MA, Xiaoli , LIU, Lihua , WEI Xueqin , ZHAI Mengyue and YU, Juan
Publisher
Beijing: Marine Geology and Quaternary Geology
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Language
Chinese
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Beijing: Marine Geology and Quaternary Geology
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Contents
陆地泥火山流体来源及其演化过程的研究,对于理解板块俯冲边界增生楔中流体特性及迁移途径有重要作用,对于油气等资源勘探具有指示意义。通过分析台湾西南部新养女湖(SYNH)泥火山喷出流体的离子组分、氢氧同位素组分以及泥质沉积物的矿物组分,探索泥火山喷出流体源区的化学特征、流体的来源及源区温度和深度条件;搭建组分运移、演化的概念模型。调查发现SYNH泥火山喷出泥质沉积物的矿物以石英、长石、伊利石、绿泥石为主,含少量方解石和白云石。流体中Na+、Cl−占主导,且Na+和Cl−呈显著正相关,表明泥火山流体起源于海洋沉积孔隙水。泥浆池中流体的Cl−浓度约为海水的1/5;氧同位素δ18O为6.24‰~6.59‰,明显富集18O;氢同位素δD的范围为−23.72‰~−12.9‰,显示贫化的特征。Cl−浓度和氢...
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台湾新养女湖泥火山流体地球化学特征与流体来源
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TN_cdi_wanfang_journals_hydzydsjdz202006007
Permalink
https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_hydzydsjdz202006007
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ISSN
0256-1492
DOI
10.16562/j.cnki.0256-1492.2020061501