Collaborative Research: Temporal evolution of submarine Mauna Loa provides insights into the nature of the Hawaiian plume

该项目旨在记录位于夏威夷火山柱西侧的莫纳罗亚火山的生长和长期岩浆演化，以揭示其整体的物理，化学和时间变化。夏威夷科学钻探项目（HSDP）的研究充分记录了沿着羽流Kea趋势的火山的长期岩浆演化。在地幔柱的Loa一侧，没有类似的火山长期岩浆历史。研究人员建议从沿着沿着1.6公里厚的熔岩序列收集的样本中获得洛亚一侧的岩浆记录，该熔岩序列由一个巨大的滑坡陡崖暴露，该陡崖解剖了莫纳罗亚的海底西南裂谷带。他们要求提供资金，对这些部分和邻近挖掘机拖运的熔岩进行密集的40 Ar/39 Ar调查。这项研究包括几个国家和国际合作伙伴关系和研究生和本科生的培训。它还将提高对夏威夷火山侧翼稳定性的理解。火山侧翼的破坏被认为对岛上的人口构成严重威胁。

Intellectual Merit This project seeks to document the growth and long-term magmatic evolution of Mauna Loa volcano on the western, Loa side of the Hawaii plume to reveal physical, chemical, and temporal variations across its entirety. The long-term magmatic evolution of a volcano along the Kea trend of the plume has been well-documented by the Hawaii Scientific Drilling Project (HSDP) studies. There is no comparable long-term magmatic history of a volcano on the Loa side of the plume. The P.I.s propose to obtain a magmatic record for the Loa side from samples that have been collected along a 1.6 km thick sequence of lavas exposed by a giant landslide scarp that dissects Mauna Loa's submarine south-west rift zone. They request funding to undertake an intensive 40Ar/39Ar investigation of lavas from these sections and adjacent dredge hauls. Broader Impacts This study includes several national and international partnerships and the training of graduate and undergraduate students. It also will improve understanding of the stability of the flanks of Hawaii volcanoes. Failure of the flanks of volcanoes is thought to pose a serious hazard to the population of the islands.