Pilo-Pleistocene Tephra Correlations Between the Turkana Basin and Arabian Sea: Constraining African Climate- Evolution Hypotheses

标题：图尔卡纳盆地和阿拉伯海之间的上更新世盖弗拉对比：制约非洲气候演变的假说。原始人的早期进化可能与非洲气候的波动有关，PI希望研究东非图尔卡纳盆地气候和原始人进化之间的关系。原始人类化石的年代是通过测定化石所在沉积物中火山灰的年代来估计的。类似年代的火山灰也出现在阿拉伯海大洋钻探计划发现的沉积物岩心中。这些深海岩心还包含微裂缝，它们准确地记录了可追溯到图尔卡纳盆地最早的原始人化石的气候历史。PI计划将深海岩心中的骨灰与图尔卡纳盆地现有的骨灰数据集相关联，从而提供更准确的原始人化石年龄，并将原始人进化的变化与气候变化相关联。

Title: Plio-Pleistocene tephra correlations between the Turkana Basin and Arabian Sea: Constraining Africa climate-evolution hypotheses. The early evolution of hominids may be tied to fluctuations of the climate in Africa, and the PIs wish to examine the relationship between climate and hominid evolution in the Turkana Basin of East Africa. The ages of hominid fossils are estimated by dating volcanic ash in the same sediments that contain the fossils. Volcanic ashes of similar age are also present in sediment cores recovered by the Ocean Drilling Program in the Arabian Sea. These deep sea cores also contain microfissils that record precisely dated climate history dating back to the earliest Turkana Basin hominid fossils. The PIs plan to correlate the ashes in the deep sea cores with an existing data set of ashes in the Turkana Basin, and to therefore give more precise ages of the hominid fossils, and to correlate changes in hominid evolution with changes in climate.