Sector Collapse-Generated Debris Avalanche-Cohesive Debris Flow Transformations at Decade Volcano Mount Rainier, Washington

9316739 Voight提议的研究重点是泥石流，旨在为国际减少自然灾害十年（IDNDR）的十年火山计划做出贡献。它的总体目标是通过沉积物的表征和源区的重建来增强我们对过去扇形崩塌的理解，并提高我们对碎屑雪崩向粘性泥石流转化机制的理解。这些目标将通过对流动矿床中巨碎屑岩和基质相关系的详细研究，以及对岩性、火成岩结构、关键蚀变矿物和结构的详细巨碎屑岩作图来实现。本研究的主要任务是表征绿水拉哈尔-奥西奥拉泥流沉积中的巨型碎屑岩及其邻近基质。这项研究将大大有助于我们了解雷尼尔山和世界各地类似火山的粘性泥石流过程和危害。

9316739 Voight The proposed research focuses on debris flows and is intended as a contribution to the Decade Volcano Program of the International Decade of Natural Disaster Reduction (IDNDR). It has the general objectives to enhance our understanding of past sector-collapses via characterization of deposits and reconstruction of source areas, and to improve our understanding of mechanisms of transformation of debris avalanche to cohesive debris flows. These objectives will be met through detailed study of megaclast and matrix facies relationships in flow deposits, and detailed megaclast mapping of lithologies, igneous structures, key alteration minerals, and textures. A primary task of the proposed research is to characterize the megaclasts and adjacent matrix in the Greenwater Lahar-Osceola Mudflow deposit. The study should significantly contribute to our understanding of cohesive debris flow processes and hazards at Mount Rainier and similar volcanoes worldwide.