SGER: Basement Sill, Antarctica: Constraints from its PGE Abundance Patterns and Isotopic Compositions on Magma Source Characteristics and Crystallization Processes

这一探索性研究的小额赠款支持测量PGE丰度和Hf，Nd，Sr和Pb同位素比率的基底Sill和Dais侵入体裂片的Ferrar岩浆区，南极洲。 这个省在冈瓦纳大陆的分裂中发挥了关键作用。待测试的模型是岩浆生产的地幔柱活动与减压熔融的化石俯冲带。 铂族元素数据还将用于评估岩浆结晶过程中挥发物的行为，其他证据表明岩浆结晶可能已经达到饱和。 研究的样品是在2005年由国家科学基金会赞助在南极洲举行的岩浆场实验室讲习班期间收集的。这项研究的结果将与来自其他与会者的补充数据相结合，以开发一个新的多学科的Ferrar岩浆活动模型。这项工作的更广泛的影响包括国际合作和通过向K12学生进行公共宣传的非正式科学教育。

This Small Grant for Exploratory Research supports measurement of PGE abundances and Hf, Nd, Sr and Pb isotopic ratios of the Basement Sill and Dais Intrusion lobe of the Ferrar Magmatic Province, Antarctica. This province played a key role in the breakup of Gondwanaland. Models to be tested are magma production by plume activity versus decompression melting in a fossil subduction zone. The PGE data will also be used to evaluate the behavior of volatiles during magma crystallization, which other evidence indicates may have reached saturation. The samples to be studied were collected during the NSF-sponsored, Magmatic Field Laboratory Workshop held in Antarctica in 2005. This study's results will be compliled with complementary data from other attendees to develop a new multidisciplinary model of Ferrar magmatism.The broader impacts fo this work include international collaboration and informal science education through public outreach to K12 students.