The Mid Pleistocene transition: did marine biological productivity lead to pCO2 changes?

这个小项目的目的是准备一个关于中更新世过渡的大项目。我想清洗和筛选5个ODP点的样本，这些样本应该在计划的项目中进行研究，以找出是否有足够的底栖有孔虫物种可用于Caroline Lear的地球化学工作(镁/钙、锂/钙、铀/钙)。除了对海底有孔虫和稳定同位素的积累率进行微古生物学研究外，这些数据还将有助于海洋生产力的重建。计划中的大型项目将研究海洋生物生产力的提高是否有助于大气二氧化碳浓度的下降。在中更新世过渡时期。

This small project aims at preparing a large project about the Mid Pleistocene transition. I want to wash and sieve samples from the 5 ODP locations, that should be studied in the planned project, in order to find out whether enough of those benhtic foraminiferal species are available that form the basis for Caroline Lear's geochemical work (Mg/ca, Li/Ca, U/Ca). These data will contribute to the reconstruction of marine productivity besides micropaleontological studies of accumulation rates of benthic foraminifera and of stable isotopes. The planned large project will study whether an increase in marine biological productivity contributed to the drop in pCO2 atm. during the Mid Pleistocene Transition.