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纳入珊瑚骨的阳离子元素:生物矿物化的实验方法和古老代理

Sharon Ram¹, Jonathan Erez¹

¹The Fredy and Nadine Herrmann Institute of Earth Sciences, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel.

Proceedings of the National Academy of Sciences of the United States of America

|November 2, 2023

概括

珊瑚骨架记录了过去的海洋条件. 这项研究量化了珊瑚骨中的和等元素,揭示了海水化学和过去气候的洞察力.

科学领域:

地质化学地质化学
古海洋学是古海洋学.
生物矿物化生物矿物化

背景情况:

珊瑚骨架为重建过去的海洋条件和理解生物矿物化过程提供了重要的代理.
珊瑚骨的元素和同位素组成可以揭示过去的海水碳酸盐化学,古CO2水平和气候历史.

研究的目的:

研究 (B,S,As,Br,I,Mo) 融入Acropora cervicornis和Pocillopora damicornis的骨架中的情况.
将珊瑚骨中的离子与的比率与培养海水中的比率相关联,以了解分区机制.
为了确定珊瑚细胞外化液 (ECF) 中的碳酸盐离子度,并评估化模型.

主要方法:

在Acropora cervicornis和Pocillopora damicornis的实验培养中.
在珊瑚骨架和培养海水中的元素组成 (B,S,As,Br,I,Mo) 的分析.
阳离子与的比率的相关性分析和雷利分离模型.

主要成果:

阳离子-回归中的负截取表明珊瑚ECF中的碳酸离子度高于海水中的碳酸离子度.
在ECF上计算的碳酸盐离子丰富系数为A. cervicornis的2.5和P. damicornis的1.9.
确定了B,S,As,Br,I和Mo的分割系数,其中因其长时间的海洋居住时间而闻名.

结论:

珊瑚化发生在一个半封闭的海水库中,在ECF中碳酸离子度较高.
确定的分割系数为重建过去的海洋化学,包括古CO2的新可能性,使用化石珊瑚.
化石珊瑚中的,硫,和是过去海洋条件的有价值的代理物.

关键词:

化液体的化液体碳酸盐离子是一种碳酸盐离子.珊瑚离子分离的珊瑚离子珊瑚的化,珊瑚的化古化学古化学古化学

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