Deep Structure of an Active, Silicic Volcanic Field: Altiplano-Puna Volcanic Complex, Central Andes, South America

这项研究是对南美洲中部火山区阿根廷、玻利维亚和智利交界处的Altiplano-Puna火山复合体岩石圈结构的研究。在过去的10万年里，这个地区一直是大量烟灰岩喷发的地点，是地球上最大的活跃火山口复合体之一。除了分析该地区的现有数据外，该项目还将在该地区安装为期一年的PASCALL便携式宽带仪器，用于记录当地和远震事件。本研究的目的是回答有关大型硅酸火山场深部结构的重要问题，并对大陆俯冲带岩石圈岩浆过程、地壳增厚和熔融以及大陆地壳演化具有指导意义。* * * ? ?

9505816 ZANDT This research is a study of the lithospheric structure of the Altiplano-Puna volcanic complex at the borders of Argentina, Bolivia, and Chile, in the central volcanic zone of south America. This zone has been the site of voluminous ignimbrite eruptions within the past 10 Ma and is one of the largest active caldera complexes on Earth. In addition to analyzing existing data for the region, the project will install PASCALL portable broadband instrumentation for one year in the area for recording local and teleseismic events. The aim of this work is to answer important questions about the deep structure of a major silicic volcanic field with implications for lithospheric magmatic processes in continental subduction zones, crustal thickening and melting, and the evolution of continental crust. *** ??