Oxygen and carbon isotopic systematics of aragonite speleothems and water in Furong Cave, Chongqing, China

Li, Ting-Yong; Shen, Chuan‐Chou; Li, Hongchun; Li, Junyun; Chiang, Hong‐Wei; Song, Sheng-Rong; Yuan, Daoxian; Lin, Chris Ding-Jyun; Gao, Pan; Zhou, Liping; Wang, Jianli; Ye, Ming-Yang; Tang, Liang‐Liang; Xie, Shuyun

doi:10.1016/j.gca.2011.04.003

Cited by 98 publications

(43 citation statements)

References 80 publications

(146 reference statements)

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“…6), as well as successful Hendy tests, indicates that the stalagmites formed under an oxygen isotopic equilibrium condition. The Yangkou stalagmite δ 18 O data therefore represent rainfall oxygen isotopic change, which is a reflection of regional hydrological variability in the AM territory (e.g., Wang et al, 2001Wang et al, , 2008Cheng et al, 2009;Li et al, 2011). The oxygen isotope sequences for all of the Yangkou stalagmites are illustrated in Fig.…”

Section: Yangkou Oxygen Isotope Datamentioning

confidence: 99%

Stalagmite-inferred variability of the Asian summer monsoon during the penultimate glacial–interglacial period

Shen

Huang

et al. 2014

Clim. Past

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Abstract. The orbital-timescale dynamics of the Quaternary Asian summer monsoons (ASM) are frequently attributed to precession-dominated northern hemispheric summer insolation. However, this long-term continuous ASM variability is inferred primarily from oxygen isotope records of stalagmites, mainly from Sanbao cave in mainland China, and may not provide a comprehensive picture of ASM evolution. A new spliced stalagmite oxygen isotope record from Yangkou cave tracks summer monsoon precipitation variation from 124 to 206 thousand years ago in Chongqing, southwest China. Our Yangkou record supports that the evolution of ASM was dominated by the North Hemisphere solar insolation on orbital timescales. When superimposed on the Sanbao record, the precipitation time series referred from Yangkou cave stalagmites supports the strong ASM periods at marine isotope stages (MIS) 6.3, 6.5, and 7.1 and weak ASM intervals at MIS 6.2, 6.4, and 7.0. This consistency confirms that ASM events affected most of mainland China. Except for the solar insolation forcing, the large amplitude of minimum δ 18 O values in Yangkou record during glacial period, such as MIS 6.5, could stem from the enhanced prevailing Pacific trade wind and/or continental shelf exposure in the Indo-Pacific warm pool.

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Section: Yangkou Oxygen Isotope Datamentioning

confidence: 99%

Stalagmite-inferred variability of the Asian summer monsoon during the penultimate glacial–interglacial period

Shen

Huang

et al. 2014

Clim. Past

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“…Aragonitic stalagmites or flowstones are often avoided because aragonite is thermodynamically instable and subject to post-depositional alteration to calcite (Frisia et al, 2002;Martin-Garcia et al, 2009). Climate proxy data from aragonite archives yield promising results, however, when screening for geochemical and petrographical alteration documents well-preserved aragonite fabrics (Finch et al, 2003;Cosford et al, 2008;Li et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Climate and cave control on Pleistocene/Holocene calcite-to-aragonite transitions in speleothems from Morocco: Elemental and isotopic evidence

Wassenburg

Immenhauser

Richter

et al. 2012

Geochimica et Cosmochimica Acta

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“…Climate-controlled stable isotope changes in dissolved inorganic carbon (DIC) in cave drip water (d 13 C DIC ) also play an important role in paleo-climate reconstruction (Li et al 2010;Fohlmeister et al 2011). Understanding the relationship between d 13 C DIC and the environmental factors that affect its values is crucial to the study of carbon stable isotope records in speleothem.…”

Section: Introductionmentioning

confidence: 99%

Dissolved inorganic carbon isotope compositions of drip water in Panlong cave, southwest China

Wu¹,

Zhu²,

Pan³

et al. 2014

Environ Earth Sci

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High-resolution carbon and oxygen isotope records in stalagmites provide significant information for quantitative paleo-reconstructions of past temperature and precipitation. This paper describes results of isotopic analysis of dissolved inorganic carbon (DIC) in Panlong Cave water (from drips and shallow pools). Cave water was sampled monthly throughout 2012 and analyzed for d 13 C DIC composition. The values of d 13 C DIC in drip water were in the range of -10.42 to -16.07 %, while the values of d 13 C DIC in pool water were in the range of -1.88 to -6.94 %. Dissolved inorganic carbon isotope records showed a gradual stepwise negative excursion from January to August, and a gradual stepwise positive excursion from September to December. d 13 C DIC in cave water showed remarkable seasonal variations, which were negative excursion from 2 to 5 % in rainy season than in dry season. A negative d 13 C DIC excursion in summer was not the result of vegetation types, which was contributed to enhance root respiration and decomposition of soil organic matter. A correlation between d 13 C DIC values of perennial drip water and pool water samples with air temperature and precipitation amount suggests that these negative excursions were caused by increasing air temperature during rainy season. Negative excursions in d 13-C DIC values of seasonal drip water were correlated with monthly precipitation, caused by the influx of soil organic matter into the cave. Hence, this paper provides an important framework and an empirical basis for reconstructing temperature from stalagmites and drip water in this region.

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Oxygen and carbon isotopic systematics of aragonite speleothems and water in Furong Cave, Chongqing, China

Cited by 98 publications

References 80 publications

Stalagmite-inferred variability of the Asian summer monsoon during the penultimate glacial–interglacial period

Stalagmite-inferred variability of the Asian summer monsoon during the penultimate glacial–interglacial period

Climate and cave control on Pleistocene/Holocene calcite-to-aragonite transitions in speleothems from Morocco: Elemental and isotopic evidence

Dissolved inorganic carbon isotope compositions of drip water in Panlong cave, southwest China

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