Magma storage and transport during recent eruptions of El Hierro (Canary Islands)

El Hierro（加那利群岛）最近喷发期间的岩浆储存和运输

• 批准号: 233507167
• 负责人: Privatdozent Dr. Andreas Klügel
• 金额: --
• 依托单位: Fachgebiet Petrologie der Ozeankruste
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/233507167?language=en
• 关键词: Magma; storage; transport; during; recent

The submarine 2011/2012 El Hierro eruption was a lucky chance for geosciences. The detailed monitoring of pre- and syn-eruptive seismicity and deformation allowed for a reconstruction of magma movement at depth. During eruption a number of glassy basalts that are suitable for geothermobarometry could be sampled. We propose petrological investigations of these basalts to determine the depths of magma storage and transport and to compare them to the seismic data, which is a novel approach for the Canary Islands. This will for the first time permit the validation of petrologically based models of magma plumbing beneath intraplate volcanoes such as El Hierro and La Palma. In addition barometric investigations of prehistoric subaerial basalts shall be carried out and the data compared to the depths of the actual eruption. The results of the proposed project will help to assess the validity of geobarometric data from previous and future studies at other volcanoes, which is a prerequisite for a better understanding of these volcanoes and for hazard assessment during future seimic crises.

2011/2012年海底耶罗火山爆发是地球科学的一个幸运机会。通过对喷发前和喷发时的地震活动和变形进行详细监测，可以重建深部的岩浆运动。在喷发过程中，可以对一些适合于地热测压的玻璃质玄武岩进行取样。我们建议对这些玄武岩进行岩石学调查，以确定岩浆储存和运输的深度，并将其与地震数据进行比较，这对加那利群岛来说是一种新的方法。这将首次允许验证基于岩石学的板内火山（如耶罗和拉帕尔马）下岩浆管道模型。此外，应进行史前陆上玄武岩的气压测量调查，并将数据与实际喷发的深度进行比较。拟议项目的结果将有助于评估以前和今后在其他火山进行的研究所获得的地质压力数据的有效性，这是更好地了解这些火山和在今后地震危机期间进行危险评估的先决条件。

项目成果

Deep intrusions, lateral magma transport and related uplift at ocean island volcanoes

• DOI: 10.1016/j.epsl.2015.09.031
• 发表时间: 2015-12-01
• 期刊: EARTH AND PLANETARY SCIENCE LETTERS
• 影响因子: 5.3
• 作者: Kluegel, Andreas;Longpre, Marc-Antoine;Stix, John
• 通讯作者: Stix, John