Petrological, Geochemical, & Geochronological Investigation of the Easter Island Seamount Volcanic Chain, Southeast Pacific: A Group Proposal

小行星9531888 这是对东南太平洋东萨拉-戈麦斯海山和岛链起源的多方面分析调查。 目前有四种模型的起源链：简单的热点链，泄漏断裂带，热线划定的两个上升对流单体的四肢，和烟羽脊相互作用。 主要调查人员在两次巡航中收集了含有新鲜玻璃的岩石。 在这个项目中，他们将获得样品的放射性测定日期，并确定样品的化学和同位素组成 *

9531888 Poreda This is a multiprong analyical investigation of the origin of the Easter-Sala y Gomez seamount and island chain in the southeast Pacific Ocean. At present there are four models for the origin of the chain: simple hotspot chain, leaky fracture zone, hot line delineating the limbs of two ascending convection cells, and plume-ridge interaction. The principal investigators have collected rocks containing fresh glass during two cruises to the chain. In this project they will obtain radiometric dates on the samples and determine the chemical and isotopic composition of the samples ***