Sr/Ca and δ18O ratios measured from Acropora nobilis and Porites lutea:: Is Sr/Ca paleothermometry always reliable?

被引：7

作者：

Boiseau, M

Cornu, H

Turpin, L

Juillet-Leclerc, A

机构：

[1] CEA, CNRS, Lab Mixte, Ctr Faibles Radioactivites,Domaine CNRS, F-91198 Gif Sur Yvette, France

[2] UPCM, ORSTOM, Unite Mixte CNRS, Lab Oceanog Dynam & Climatol, F-75252 Paris 05, France

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES | 1997年 / 325卷 / 10期

关键词：

Sr/Ca; O-18/O-16; paleothermometer; coral aragonite; Mayotte;

D O I：

10.1016/S1251-8050(97)82751-6

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We measured the Sr/Ca and O-18/O-16 ratios in Acropora nobilis and Porites lutea, from the Mayotte lagoon. As the variations of delta(18)O(seawater) are negligible, coral delta(18)O(aragonite) reflects only seasonal temperature variations. While there is a good agreement between the Sr/Ca ratio and delta(18)O for Acropora nobilis, it is not the case for Porites lutea. Coral biological and environmental parameters cannot explain the discrepancies between Sr/Ca ratios and isotopic measurements. However, transport mechanisms of Sr2+ and Ca2+ and the presence of two mineralogical structures of strontium may affect the Sr/Ca ratio.

引用

页码：747 / 752

页数：6

共 16 条

[1] On the inclusion of trace materials into massive coral skeletons .2. Distortions in skeletal records of annual climate cycles due to growth processes [J].