【摘要】 地震成因与花岗岩侵位及热力学过程密切相关。花岗岩侵位可引发三类地震：垮塌地震(岩浆房置换导致围岩失稳)、伸展地震(穹窿构造诱发正断层活动)和爆炸地震(超临界流体相变引发隐爆)。其中，爆炸地震因流体相变释放巨大能量，成为浅源破坏性地震的主因。通过厘清岩浆热场、流体运移和超临界流体相变与地震类型之间的关联性，强调爆炸地震机制研究对完善地震理论及其预测的关键意义，为解释唐山、汶川等大地震成因提供了新视角。更多还原

【Abstract】 The genesis of earthquakes is closely related to granite intrusion and thermodynamic processes. This article proposes that granite intrusion can trigger three types of earthquakes: collapse earthquakes(rock instability caused by magma chamber displacement), extensional earthquakes(normal fault activity induced by dome structures), and explosive earthquakes(hidden explosions caused by supercritical fluid phase transitions). Among them, explosive earthquakes release enormous energy due to fluid phase transitions, becoming the main cause of shallow source destructive earthquakes. This article clarifies the correlation between magma thermal field, fluid migration, supercritical fluid phase transitions and earthquake types, emphasizing the key significance of studying explosive earthquake mechanisms for improving earthquake theory and prediction, and providing a new perspective for explaining the causes of major earthquakes such as Tangshan and Wenchuan earthquakes.更多还原