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环境同位素记录中共生碳酸盐氧同位素分馏差值的影响 被引量:3

Effect of Oxygen Stable-Isotope Fractionation between Co-existing Carbonates on Environmental Isotopic Record
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摘要 湖泊化学沉积碳酸盐δ18O是研究区域气候演变的重要环境指标之一。青海湖等闭流湖泊的研究结果证实,在对δ18O环境记录进行共生碳酸盐氧同位素分馏效应校正时,应依据具体情况,采用0-1‰的分馏差值。由高温实验结果推断出的常温分馏差值(4‰-7‰)不能被应用到自然条件下湖泊共生碳酸盐氧同位素分馏效应的校正。 δ^(18)O of lacustrine inorganic carbonates is one of the important environmental proxies for the study of regional climatic evolution.Results from Lake Qinghai and other closed-basin lakes indicate that isotope fractionation between co-existing carbonates formed naturally in lake environments is minimum.The fractionation differences of 4‰~7‰ in δ^(18)O between dolomite and calcite,obtained based on elevated-temperature experiments and extrapolations to temperatures at 20℃~25℃,are not applicable to the carbonates formed in natural environments.The fractionation differences of 0~1‰ are recommended for calibrating a possible disparity between co-existing carbonates in lacustrine isotopic records.
作者 曾承 余俊清
出处 《盐湖研究》 CSCD 2004年第2期14-18,共5页 Journal of Salt Lake Research
基金 中科院青海盐湖所创新领域前沿项目(CX200302) 国家自然科学基金面上项目(49971074) 中科院资环创新重大项目(KZCX1-Y-05)
关键词 共生碳酸盐 氧同位素分馏 沉积学 环境同位素 Environmental isotope Co-existing carbonates Oxygen isotopic fractionation Lake Qinghai
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参考文献22

  • 1顾兆炎,刘嘉麒,袁宝印,刘东生,刘荣谟,刘禹,张光宇,安川克己.12000年来青藏高原季风变化——色林错沉积物地球化学的证据[J].科学通报,1993,38(1):61-64. 被引量:82
  • 2张彭熹,张保珍,杨文博.青海湖冰后期以来古气候波动模式的研究[J].第四纪研究,1989,9(1):66-77. 被引量:44
  • 3张彭熹 张保珍 杨文博.青海湖冰后期水体环境的演化.沉积学报,1988,6(2):1-14.
  • 4Gasse F,Arnold M,Fontes J C,et al.a 13000-year climate record from western Tibet[J].Nature,1991,353:742-745.
  • 5Sheppard S M F,Schwarcz H P.fractionation of carbon and oxygen isotopes and magnesium between coexisting metamorphic calcite and dolomite[J].Contr.Mineral.and Petrol.,1970,26:161-198.
  • 6O'Neil J R,Clayton R N,Mayeda T K.Oxygen isotope fractionation in divalent metal carbonates[J].J Chem Phys.,1969,51:5547-5558.
  • 7Fritz P,smith D G W.The isotopic composition of secondary dolomites[J].Geochimica et Cosmochimica Acta,1970,34:1161-1173.
  • 8Hoefs J.stable isotope geochemistry[M].2nd Edition,Berlin:Springer-Verlag,1980:147-154.
  • 9Matthews A,Katz A.Oxygen is otope fractionation during dolomitization of calcium carbonate[J].Geochimica et Cosmochimica Acta,1977,41:1531-1438.
  • 10Tan F C,Hudson J D.Carbon and oxygen isotopic relationships of dolomites and co-existing calcites,Great Estuarine series(Jurassic),Scotland[J].Geochimica et Cosmochimica Acta,1971,35:755-767.

二级参考文献40

  • 1李栓科,王涛.全新世内蒙南缘黄旗海湖面的波动[J].湖泊科学,1993,5(4):324-334. 被引量:12
  • 2陈克造,J.M.Bowler,K.Kelts.四万年来青藏高原的气候变迁[J].第四纪研究,1990,10(1):21-31. 被引量:136
  • 3黄麒 蔡碧琴 等.盐湖年龄的测定I.液体闪烁计数法测定^14C年代[J].海洋与湖沼,1981,(12):41-48.
  • 4王小燕.黄旗海湖积物中有机质及有机碳同位素古气候意义的研究:硕士论文[M].西宁:中科院青海盐湖所,2000..
  • 5张彭嘉,第四纪研究,1989年,1期,66页
  • 6郑淑蕙,稳定同位素地球化学分析,1986年
  • 7团体著者,西藏河流与湖泊,1984年
  • 8团体著者,西藏气候,1984年
  • 9叶笃正,青藏高原气象学,1979年
  • 10Kelts K, Chen K Z, Lister G et al. Geological fingerprints of climate history: A cooperative study of Qinghal Lake, China.Eclogae geologicae. Helvetiae, Swiss Journal of Geosciences, 1989, 82:167 ~ 182

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