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

题目：图尔卡纳盆地与阿拉伯海的上新世-更新世温层相关性：约束非洲气候演化假说。人科动物的早期进化可能与非洲气候的波动有关，研究小组希望研究东非图尔卡纳盆地气候与人科动物进化之间的关系。原始人类化石的年代是通过测定含有化石的同一沉积物中的火山灰的年代来估计的。类似年代的火山灰也存在于阿拉伯海海洋钻探项目回收的沉积物岩心中。这些深海岩心还含有微化石，这些微化石精确地记录了最早的图尔卡纳盆地人类化石的气候历史。PIs计划将深海岩心中的灰烬与图尔卡纳盆地现有的灰烬数据集联系起来，从而给出更精确的古人类化石年龄，并将古人类进化的变化与气候变化联系起来。

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.