Deglacial variations of Sr and 87Sr/86Sr ratio recorded by a stalagmite from Central China and their association with past climate and environment

Zhou, Houyun; Feng, Yongjiu; Zhao, Jian‐xin; Shen, Chuan‐Chou; You, Chen–Feng; Lin, Yu-Ju

doi:10.1016/j.chemgeo.2009.09.003

Cited by 45 publications

(58 citation statements)

References 72 publications

(195 reference statements)

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“…In (a), the hatched area is the Qinghai-Tibet Plateau; the thick dotted line indicates the northwestern limit of the East Asian summer monsoon; the dashed arrows indicate routes of the summer monsoon and transport of moisture during the summer season; the grey circular area with a letter "H" represents the Mongolian high pressure formed during the winter season; the thick grey arrows indicate routes of winter monsoon and dust transportation. In (b), the filled ellipses indicate the layers of 230 Th dates (Zhou et al, 2009) which are listed to the right; the void triangles indicate the loci of sub-samples previously used for REY analyses (Zhou et al, 2008b) and the void circles indicate the loci of sub-samples used in this study; the dashed line indicates the growth hiatus at depth of 84 mm. In (c), the four caves distribute along the Nuoshui River.…”

Section: Methodsmentioning

confidence: 99%

“…It grew from $38 to $10 ka and consists of dense clear calcite (40-84 mm in depth) and slightly opaque grayish calcite (the rest of SJ3). A growth hiatus is apparent on the lengthwise cut surface at a depth of $84 mm from its top (Zhou et al, 2009), corresponding to a growth cessation between $35 and 20 ka. Thus, SJ3 formed during part of marine isotope stage (MIS) 3 (38-35 ka), the last glacial maximum (LGM) (20-17.6 ka), the period synchronous with the Heinrich Event one (H1) (17.6-14.6 ka), and the last deglacial period (LDG) (14.6-10 ka).…”

Section: Methodsmentioning

confidence: 99%

“…The LGM and H1 are cold and dry climatic phases in the East Asian summer monsoon regime compared with the LDG and MIS 3 periods which are relatively warm and humid (Liu and Ding, 1998). A detailed description of the geological setting and stalagmite SJ3 is provided in Zhou et al (2008cZhou et al ( , 2009. Because the REY concentrations of SJ3 are very low, the results previously obtained on a Thermo X-Series ICP-MS at the University of Queensland using a low sensitivity mode have relatively large errors (with relative standard deviation as high as 20-30% for some low REY calcite bands) (Zhou et al, 2008b).…”

Section: Methodsmentioning

confidence: 99%

“…1c for location of these caves). Because the water samples are collected in November in the dry season (Zhou et al, 2009), five of them are sampled from pools.…”

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Rare earth element patterns in a Chinese stalagmite controlled by sources and scavenging from karst groundwater

Zhou

Greig

Tang

et al. 2012

Geochimica et Cosmochimica Acta

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…1c for location of these caves). Because the water samples are collected in November in the dry season (Zhou et al, 2009), five of them are sampled from pools.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Rare earth element patterns in a Chinese stalagmite controlled by sources and scavenging from karst groundwater

Zhou

Greig

Tang

et al. 2012

Geochimica et Cosmochimica Acta

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“…Li et al [3] studied the 87 Sr/ 86 Sr ratios in a stalagmite from Heshang Cave in southern Shanxi Province by the mass-balance model, and successfully reconstructed the degree and variation in chemical weathering intensity for the soil overlying the cave. Moreover, Zhou et al [4] found that the 87 Sr/ 86 Sr ratios of a stalagmite could be used to investigate the atmospheric dust activity and the Asian winter monsoon at the Songjia Cave in northeastern Sichuan Province, China. These results imply that the fluctuation of 87 Sr/ 86 Sr ratios in speleothems could be closely related with changes in climate and environment.…”

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confidence: 99%

Characteristics of strontium isotopes and their implications in the Qixing Cave of Guizhou, China

2011

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The strontium isotopic compositions ( 87 Sr/ 86 Sr) of samples including soils, bedrock, soil waters, drip waters and their corresponding speleothems in the Qixing Cave (QXC), Guizhou Province, China, were systemically measured and analyzed. The results indicate that there are significant Sr isotopic differences among samples. The mean 87 Sr/ 86 Sr ratios in drip water for the samples 1 # , 4 # and 9 # were 0.709568, 0.709139 and 0.708761, respectively, which possibly result from different flow paths, residence times, and other hydrogeological processes in the unsaturated zone overlying QXC. Meanwhile, levels of 40.8%, 57.6% and 72.4% of Sr in drip waters for 1 # , 4 # and 9 # , respectively, were derived from bedrock dissolution, which was calculated by the mixture model of the two end-members (soil and bedrock). There is, however, no positive correlation between the relative proportion from bedrock dissolution (δ 13 C value is 1.8‰) and drip water δ # is the heaviest (-4.5‰) with the lowest contribution rate of bedrock dissolution, whereas the value in 9 # is the lightest (-9.3‰) with the highest contribution rate of bedrock dissolution. The proportion from host rock dissolution in 4 # is higher than that in 1 # and lower than that in 9 # , while its mean drip water δ 13 C DIC value (-8.6‰) is higher than that of 9 # and lower than that for 1 # . This suggests that the prior calcite precipitation (PCP) processes in the unsaturated zone overlying the cave are responsible for the δ 13 C DIC value differences between different drip waters, and not bedrock dissolution. Furthermore, this study also demonstrates that the 87 Sr/ 86 Sr ratios of speleothems in the 1 # and 4 # mainly reflect the variation in the relative proportions from the soil system (soil water) and bedrock dissolution overlying the cave. It is, therefore, feasible to use the strontium isotopic signals of speleothems as an indicator for soil chemical weathering intensity, and consequently as a monsoon proxy in the study area. strontium isotope, cave drip water, source, prior calcite precipitation (PCP), Qixing Cave of Guizhou Citation:

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Speleothem‐derived Asian summer monsoon variations in Central China, 54–46 ka

Zhou

Zhao

Wang

et al. 2011

J Quaternary Science

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The oxygen isotope signature (d 18 O) of stalagmite SI3 collected from Shizi Cave in north-east Sichuan Province provides an Asian Summer Monsoon (ASM) record in Central China for the period 54-46 ka. The SI3 d 18 O record clearly shows a negative d 18 O excursion centred around 49.4 ka, which was reported in Hulu Cave in East China but not identified in the speleothem records from South-west China. As a whole, this record displays a higher coherence with the two Hulu records from East China than with the speleothem d 18 O records from South-west China, suggesting that at 54-46 ka, Central China was influenced more by the East Asian Summer Monsoon than by the Indian Summer Monsoon. It also displays a significant negative d 18 O excursion at 47.5-46.6 ka, which is not clearly documented in two other speleothem d 18 O records previously reported from South-west China. This suggests that details of the Greenland interstadial 12 warrant further investigations in future in monsoonal China. The SI3 d 18 O record displays more significant centennial-scale variations than the other four speleothem d 18 O records from East and South-west China, which may be due to the fact that the study site is closer to the north-west boundary of the ASM and more sensitive to variations of the ASM than East and South-west China.

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Deglacial variations of Sr and 87Sr/86Sr ratio recorded by a stalagmite from Central China and their association with past climate and environment

Cited by 45 publications

References 72 publications

Rare earth element patterns in a Chinese stalagmite controlled by sources and scavenging from karst groundwater

Rare earth element patterns in a Chinese stalagmite controlled by sources and scavenging from karst groundwater

Characteristics of strontium isotopes and their implications in the Qixing Cave of Guizhou, China

Speleothem‐derived Asian summer monsoon variations in Central China, 54–46 ka

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