Crust-Mantle Interaction in Highly Extended Continental Lithosphere

加利福尼亚州死亡谷的黑山提供了一个描述大规模陆内伸展过程中形成的岩浆系统的机会。该项目的目标是：1)确定岩浆源和岩浆演化与伸展几何学和伸展阶段的关系；2)确定伸展省新增加的地壳的化学和同位素特征；3)确定南部盆地和山脉省的壳幔物质平衡。4)确定侵入岩系的地球化学是否反映在喷发序列中。国际原子能机构希望：1)通过U-Pb、Rb-Sr和裂变径迹研究确定各种深成体的年龄；2)测量Nd、Sr、Pb同位素和微量元素组成；3)应用地球压力学研究。所有这一切都将在仔细的实地工作之后完成。

The Black Mountains, Death Valley, CA, present an opportunity to characterize a magmatic system developed during large-scale intracontinental extension. The goals of this project are to: 1) determine the relationship of magma sources and magma evolution to the geometry and stages of extension, 2) determine the chemical and isotopic signature of new additions to the crust in extensional provinces, 3) determine the crust-mantle mass balance for the southern Basin and Range Province, 4) determine whether or not the geochemistry of the intrusive series is reflected in the eruptive sequence. The PI hopes to: 1) determine the ages of various plutonic bodies through U-Pb, Rb-Sr and fission track studies, 2) measure the Nd, Sr, and Pb isotope, and trace element composition, and 3) apply geobarometry studies. All this wil be done following careful field work.