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Article: The isotopic geochemical characteristics and genesis of the CO2 gas pools in the Jiyang depression

TitleThe isotopic geochemical characteristics and genesis of the CO2 gas pools in the Jiyang depression
Authors
KeywordsCo2 Gas Pool
Isotope
Jiyang Depression
Noble Gas
Origin
Issue Date2006
Publisher中國礦物巖石地球化學學會. The Journal's web site is located at http://kydh.chinajournal.net.cn/
Citation
Bulletin of Mineralogy Petrology and Geochemistry, 2006, v. 25 n. 3, p. 272-278 How to Cite?
AbstractThe CO2 gas pools of the Jiyang Depression are mainly located in the central and southern parts of the Gaoqing-Pingnan deep fault zone, Northwestern margin of the Yangxin subsidiary depression and the Shangdian volcanic dome. These CO2 gas pools contain 69%-97% CO2. The geochemical analyses indicate that the δ13 CCO2 values are varied from -5.67‰ to -3.35‰, the CH4/3 He ratios are varied from 1.01 × 108 to 5.65 × 108, the 3He/4He ratios are varied from 2.80 × 10-6 to 4.49 × 10-6 (i.e. R/Ra = 2-3.21), the 40Ar/36Ar ratios are varied from 317 to 1791, and the CO2/3 He ratio are varied from 0.25 × 109 to 2.61 × 109 respectively. The data above consistently suggest that the CO2 reserved in the Jiyang Depression was mainly sourced from the mantle, with possible influence of partly loosing CO2 in the upward migration process of the mantle sourced CO2, or possible mixing with small part of crust-sourced CO2 gases such as the CO2 produced from metamorphism of carbonate rocks. Besides the qualitative analysis of the CO2 source, many other research works, such as the quantitative analysis of CO2 sources, the forming process of CO2 gas pools and its relationship to the magmatic activities, should be further undertaken.
Persistent Identifierhttp://hdl.handle.net/10722/92380
ISSN
2015 SCImago Journal Rankings: 0.320
References

 

DC FieldValueLanguage
dc.contributor.authorLin, Z-Jen_HK
dc.contributor.authorChen, Y-Jen_HK
dc.contributor.authorHuang, Z-Len_HK
dc.contributor.authorShen, B-Jen_HK
dc.date.accessioned2010-09-17T10:44:21Z-
dc.date.available2010-09-17T10:44:21Z-
dc.date.issued2006en_HK
dc.identifier.citationBulletin of Mineralogy Petrology and Geochemistry, 2006, v. 25 n. 3, p. 272-278en_HK
dc.identifier.issn1007-2802en_HK
dc.identifier.urihttp://hdl.handle.net/10722/92380-
dc.description.abstractThe CO2 gas pools of the Jiyang Depression are mainly located in the central and southern parts of the Gaoqing-Pingnan deep fault zone, Northwestern margin of the Yangxin subsidiary depression and the Shangdian volcanic dome. These CO2 gas pools contain 69%-97% CO2. The geochemical analyses indicate that the δ13 CCO2 values are varied from -5.67‰ to -3.35‰, the CH4/3 He ratios are varied from 1.01 × 108 to 5.65 × 108, the 3He/4He ratios are varied from 2.80 × 10-6 to 4.49 × 10-6 (i.e. R/Ra = 2-3.21), the 40Ar/36Ar ratios are varied from 317 to 1791, and the CO2/3 He ratio are varied from 0.25 × 109 to 2.61 × 109 respectively. The data above consistently suggest that the CO2 reserved in the Jiyang Depression was mainly sourced from the mantle, with possible influence of partly loosing CO2 in the upward migration process of the mantle sourced CO2, or possible mixing with small part of crust-sourced CO2 gases such as the CO2 produced from metamorphism of carbonate rocks. Besides the qualitative analysis of the CO2 source, many other research works, such as the quantitative analysis of CO2 sources, the forming process of CO2 gas pools and its relationship to the magmatic activities, should be further undertaken.en_HK
dc.languageengen_HK
dc.publisher中國礦物巖石地球化學學會. The Journal's web site is located at http://kydh.chinajournal.net.cn/zh_HK
dc.relation.ispartofBulletin of Mineralogy Petrology and Geochemistryen_HK
dc.subjectCo2 Gas Poolen_HK
dc.subjectIsotopeen_HK
dc.subjectJiyang Depressionen_HK
dc.subjectNoble Gasen_HK
dc.subjectOriginen_HK
dc.titleThe isotopic geochemical characteristics and genesis of the CO2 gas pools in the Jiyang depressionen_HK
dc.typeArticleen_HK
dc.identifier.emailChen, Y:ychenc@hkucc.hku.hken_HK
dc.identifier.authorityChen, Y=rp1318en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-33751371795en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33751371795&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume25en_HK
dc.identifier.issue3en_HK
dc.identifier.spage272en_HK
dc.identifier.epage278en_HK

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