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岩浆蒸气爆发作用是由岩浆与地表水或近地表的外部水(地下水或地表水)相互作用引起的。任何成分的岩浆(从酸性到超基性岩浆)都可能存在有这种类型的爆发活动,目前,由于岩浆蒸气爆发可以发生在各种各样的环境条件下,它不仅可以形成一些单成因的小型火山,也可以形成大型火山,因此与岩浆蒸气爆发有关的问题日益受到人们的注意。就某些火山来看(如新西兰陶波湖),约有几十立方公里的岩浆与几立方公里的外部水发生了混合。因而在对火山灾害评价时,岩浆蒸气爆发已成为一个重要方面。涉及到水与熔体相互作用的其它方面包括:核工业和其它工业的安全灾害、岩浆混合作用、含金刚石岩浆的火山作用、热液矿床,以及地热及地下水资源评价。对岩浆与水相互作用的动力学实验,为研究岩浆蒸气爆发的原理和可能带来的灾害提供了越来越多的知识,这种类型的研究将可能成为实验岩石学的一个新领域.
The magmatic vapor explosion is caused by the interaction between magma and surface or near-surface external water (groundwater or surface water). This type of outburst activity may occur in magmas of any composition (from acid to ultramafic magma). At present, because magma vapor explosions can occur under a wide range of environmental conditions, it can not only form some single-generative Small volcanoes can also form large volcanoes, so issues related to magma vapor outbreaks are gaining more and more attention. In the case of some volcanoes (eg Lake Taupo, New Zealand), dozens of cubic kilometers of magma mix with several cubic kilometers of external water. Thus in the evaluation of volcanic disasters, magma vapor explosion has become an important aspect. Other areas that deal with water-melt interactions include safety hazards in the nuclear industry and other industries, magma mixing, volcanism of diamond-bearing magmas, hydrothermal deposits, and evaluation of geothermal and groundwater resources. Kinetic experiments on the interaction between magma and water provide more and more knowledge for studying the principle of magma vapor explosion and possible disasters. This type of study may become a new field of experimental petrology.