Emplacement and Solidification of Basaltic Lava Flows

9508144 Cashman对莫纳罗亚火山和俄勒冈中部两个膨胀板流的囊泡结构的详细测量将允许测试Cashman等人的模型（在回顾中）对通常由基拉韦厄火山产生的更大体积流的适用性。这一解释放置过程动力学的目标与以往将流动泡状的发展视为静态过程的研究明显不同。这项工作将为解决更神秘的流的就位问题奠定基础，如洪水玄武岩。温度随传输距离的变化将使用完整的玻璃地温计来确定这两种流动，其目标是校准玄武岩喷发速率的温度损失（从而确定流动的就位方式）。一个玻璃地温计将校准实验定量测定温度损失在运输和安置银杏流。最后，玄武岩流动在就位前和就位后的冷却速率都被保存在玻璃状边缘和凝固流动内部的微岩种群中。实验量化观察到的冷却速率与晶体数密度之间的定性关系，将为确定凝固玄武岩流动中的冷却速率分布提供新的工具。

9508144 Cashman Detailed measurements of the vesicle structure of two inflated sheet flows from Mauna Loa volcano and two inflated sheet flows in central Oregon will allow testing of the applicability of the model of Cashman et al. (in review) to flows of larger volume that typically produced by Kilauea Volcano. This goal of interpreting the dynamics of the emplacement process is distinctly different from previous studies that have viewed the development of flow vesicularity as a static process. This work will lay the foundation for addressing the emplacement of more enigmatic flows, such as flood basalts. Temperature changes with transport distance will be determined for both of these flows using the completed glass geothermometer with the goal of calibrating temperature loss with basalt eruption rate (and thus flow emplacement style). A glass geothermometer will be calibrated experimentally for quantitative determination of temperature loss during transport and emplacement of the Gingko flow. Finally, both pre- and post-emplacement cooling rates of basalt flows are preserved in the microlite population of both glassy selvages and solidified flow interiors. Experimental quantification of observed qualitative relationships between cooling rate and crystal number density will provide a new tool for determining cooling rate distributions in solidified basalt flows.