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Sr/Ca profile of long-lived Tridacna gigas bivalves from South China Sea: A new high-resolution SST proxy
Yan, H (Yan, Hong)[ 1,2 ]; Shao, D (Shao, Da)[ 2 ]; Wang, YH (Wang, Yuhong)[ 3 ]; Sun, LG (Sun, Liguang)[ 2 ]
2013-07-01
Source PublicationGEOCHIMICA ET COSMOCHIMICA ACTA
Volume112Pages:52-56
Subtype期刊论文
Abstract

High-resolution delta O-18 and Sr/Ca ratio profiles of a modern (live-caught) and a fossil (dead-collected) giant bivalve shell (Tridacna gigas) from northern South China Sea were analyzed. The high-resolution delta O-18 profiles, as documented in most of previous studies, showed pronounced seasonal cycles and recorded the combined influence of seawater delta O-18 and sea surface temperature. The Sr/Ca ratio profiles derived from ICP-OES had well-defined annual cycles and significant and negative correlation with sea surface temperature, while the Sr/Ca profiles derived from LA-ICP-MS did not reveal clear annual cycles. This difference was likely caused by the organics contents in T. gigas shells, which had a chemical composition different than CaCO3 crystals and a heterogeneous distribution across the shell, the sampling methods, and the experimental errors. Two calibration equations between Sr/Ca ratios, determined by ICP-OES, of modern T. gigas shell and instrumental SST were calculated based on all monthly and extremum SST data, and the equation from extremum data produced better SST predictions. These results suggested that the high-resolution ICP-OES derived Sr/Ca ratios of T. gigas in the South China Sea had the potential of providing a good proxy of historical SST.

DOI10.1016/j.gca.2013.03.007
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10031
Collection古环境研究室
Corresponding AuthorSun, LG (Sun, Liguang)[ 2 ]
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China;
2.Institute of Polar Environment, University of Science and Technology of China, Hefei, Anhui 230026, China;
3.Advanced Management Research Center, Ningbo University, 818 FengHua Road, Ningbo 315211, China
Recommended Citation
GB/T 7714
Yan, H ,Shao, D ,Wang, YH ,et al. Sr/Ca profile of long-lived Tridacna gigas bivalves from South China Sea: A new high-resolution SST proxy[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2013,112:52-56.
APA Yan, H ,Shao, D ,Wang, YH ,&Sun, LG .(2013).Sr/Ca profile of long-lived Tridacna gigas bivalves from South China Sea: A new high-resolution SST proxy.GEOCHIMICA ET COSMOCHIMICA ACTA,112,52-56.
MLA Yan, H ,et al."Sr/Ca profile of long-lived Tridacna gigas bivalves from South China Sea: A new high-resolution SST proxy".GEOCHIMICA ET COSMOCHIMICA ACTA 112(2013):52-56.
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