Collaborative Research: Causes of Isotopic Variability in Basalts from Southern California: Isotopic and ExperimentalStudies

这项研究的目的是确定有多少同位素 玄武岩的变异性出现在地幔中， 地壳相互作用的结果。 它将包括（1）同位素 上地幔和地壳玄武岩包体概况（2） 详细的火山地球化学研究表明， 同位素比值的变化，（3）结构和微探针研究 质地不平衡，为了测试混合 同位素研究预测，（4）实验研究， 玄武岩岩浆与壳幔捕虏体相互作用 一 这项研究的成功结果应该会给我们 西南部地幔的化学性质 States.

The purpose of this study is to determine how much isotopic variability in basalts arises in the mantle, and how much is a result of crustal interaction. It will consist of (1) an isotopic survey of upper mantle and crustal basalt-borne xenoliths, (2) detailed geochemical studies at volcanoes that show large variability in isotope ratios, (3) textural and microprobe studies of textural disequilibrium, in order to test for the mixing predicted by isotope studies, and (4) experimental studies of interaction between basalt magma and crustal mantle xenoliths. A successful outcome of this research should shed considerable light on the chemical nature of the mantle of the southwest United States.