Rapid onset of mafic magmatism facilitated by volcanic edifice collapse
Rapid onset of mafic magmatism facilitated by volcanic edifice collapse
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DOI：
10.1002/2015gl064519
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发表时间：
2015-06-28
影响因子：
5.2
通讯作者：
Wang, F.
中科院分区：
文献类型：
--
作者：
Cassidy, M.;Watt, S. F. L.;Wang, F.
火山建筑物的坍塌会产生地球上最大的山体滑坡。这种卸荷如何影响岩浆储存系统对于危险评估和确定火山生长和衰变的长期控制都很重要。在这里，我们提出了一个详细的地层和岩石学分析火山滑坡和喷发沉积物蒙特塞拉特近海，在俯冲带设置，在综合大洋钻探计划远征340采样。苏弗里埃火山在大约130 ka时发生了一次大规模（6- 10 km（3））崩塌，随后爆发了玄武质火山活动，并形成了一个新的玄武质火山中心，即南苏弗里埃火山，估计该火山开始于
Volcanic edifice collapses generate some of Earth's largest landslides. How such unloading affects the magma storage systems is important for both hazard assessment and for determining long-term controls on volcano growth and decay. Here we present a detailed stratigraphic and petrological analyses of volcanic landslide and eruption deposits offshore Montserrat, in a subduction zone setting, sampled during Integrated Ocean Drilling Program Expedition 340. A large (6-10km(3)) collapse of the Soufriere Hills Volcano at similar to 130ka was followed by explosive basaltic volcanism and the formation of a new basaltic volcanic center, the South Soufriere Hills, estimated to have initiated