C-O-H-S Fluids in Volatile-Rich Magmas: Controls, Compositions, and Role in Volcanic Processes

[9706251] Rutherford次火山岩浆中存在着斑晶相，岩浆的性质在一定程度上受熔体中溶解的C-O-S挥发物的控制。此外，次火山岩浆系统中气体的析出也会影响其物理性质以及相关的岩浆过程，如对流、喷发动力学、岩浆脱气和金属运输。该奖项的研究旨在了解(1)对气体溶解度的控制，(2)过量气相的组成，以及(3)这些挥发物对火山过程的影响。这项工作包括对天然火山岩成分的实验，从1991年皮纳图博火山喷发的英安岩到钙碱性玄武岩和碱性玄武岩。第三项任务是研究维苏威火山的喷发过程。

9706251 Rutherford The phenocryst phases present in a subvolcanic magma, and the properties of the magma are controlled in part by the C-O-S volatile dissolved in the melt phase. In addition, exsolution of gas in subvolcanic magma systems will also affect their physical properties and related magmatic processes such as convection, eruption dynamics, magma degassing, and metal transport. The research to be conducted with this award is designed to understand (1) the controls on gas species solubility, (2) the composition of the excess gas phase, and (3) the effects these volatiles have on volcanic processes. The work involve experiments on natural volcanic rock compositions ranging from dacites such as those erupted from Mt. Pinatubo in 1991 to calc-alkaline and alkaline basalts. The third task involves a study if Mt. Vesuvius volcanic processes.