A Tephrostratigraphic Framework for the Atacama Desert and its Application on Different Sedimentary Archives (D06*)

该分项目旨在为阿塔卡马开发第一个全面的区域火山灰地层数据库（TephATA）。TephATA数据库应将现有和新样品的地球化学指纹数据（主要、次要、微量元素）与年代和地层信息相结合，以关联不同地点之间的火山灰层，并确定广泛的标志火山灰层位。因此，TephATA数据库将提供骨干，将已知年龄的火山爆发转移到CRC项目的大陆和海洋档案中的可见火山灰层和不可见隐火山灰层。对锆石和锆石的最新年代测定将进一步完善火山碎屑层的年代学。

The Subproject aims to develop the first comprehensive, regional tephrostratigraphic database (TephATA) for the Atacama. The TephATA database shall combine geochemical fingerprinting data (major, minor, trace elements) of available and new samples with chronological and stratigraphic information to correlate tephra layers between different sites and to identify widespread marker tephra horizons. Thereby, the TephATA database will provide the backbone to transfer ages known volcanic eruptions to visible tephra and non-visible cryptotephra layers in continental and marine archives of the CRC projects. Additional state-of-the-art dating of feldspars and zircons will refine the chronology of the tephra layers.