...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Geochemistry, geophysics, geosystems >Distinct responses of planktonic foraminiferal B/Ca to dissolution on seafloor
【24h】

Distinct responses of planktonic foraminiferal B/Ca to dissolution on seafloor

机译：浮游有孔虫B / Ca对海底溶解的不同响应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We have measured B/Ca in four core-top planktonic foraminiferal species (Globigerinoides ruber (white), Globigerinoides sacculifer (without final sac-like chamber), Neogloboquadrina dutertrei, and Pulleniatina obliquiloculata) from three depth transects (the Caribbean Sea, the southwestern Indian Ocean, and the Ontong Java Plateau) to evaluate the effect of dissolution on planktonic foraminiferal B/Ca. At each transect, (i ruber (w) and G. sacculifer (w/o sac) show decreasing B/Ca with increasing water depth. This decrease in B/Ca is accompanied with decreases in shell weights, Mg/Ca, and bottom water calcite saturation state. This indicates a postdepositional dissolution effect on B/Ca in these two species. The strong correlation observed between changes in B/Ca and bottom water calcite saturation state offers an approach to correcting for the dissolution bias. By contrast, B/Ca in N. dutertrei and P. obliquiloculata remains unchanged along depth transects, although shell weights and Mg/Ca display significant declines. Overall, our core-top results suggest species-specific dissolution effects on B/Ca in different planktonic foraminiferal species.
机译：我们从三个深度断面（加勒比海，西南西南部）测量了四种核心顶浮游有孔虫物种（球果（红色），球形小球藻（没有最终的囊状腔），新球藻dtertrei和Pull叶白僵菌）的B / Ca。印度洋和Ontong Java高原）以评估溶出对浮游有孔虫B / Ca的影响。在每个样带处，（i ruber（w）和s。sacculifer（w / o sac）随着水深的增加，B / Ca均降低。B/ Ca的降低伴随着壳重，Mg / Ca和底部的降低。水方解石饱和状态，这表明这两个物种对B / Ca有沉积后溶出作用，B / Ca变化与底部水方解石饱和状态之间的强相关性为校正溶出偏差提供了一种方法。尽管壳重和Mg / Ca显着下降，但N. dutertrei和P. obliquiloculata中的/ Ca沿深度断面保持不变，总体而言，我们的核心结果表明不同浮游有孔虫物种对B / Ca的物种特异性溶解作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号