Volcanology of voluminous felsic lavas

大量长英质熔岩的火山学

• 批准号: DP0344650
• 负责人: Prof Jocelyn McPhie
• 金额: $ 6.63万
• 依托单位: University of Tasmania
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2003
• 资助国家: 澳大利亚
• 起止时间: 2003-01-24 至 2006-05-15
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0344650
• 关键词: Volcanology; voluminous; felsic; lavas

Eruptions of voluminous lavas (>100km3)have occurred throughout geological time but not in recorded human history. These lavas are a major part of very large volcanic areas that form the continents. Excellent examples have been identified in the Gawler Range Volcanics, South Australia. Little is known about the eruption mechanisms and yet these events are the key to understanding large-scale melting processes deep in the Earth and continent formation. This research will use field data from one of the South Australian examples to constrain the nature and position of the source volcanic centre and to clarify outflow mechanisms.

在整个地质时期都有大量熔岩喷发（100 - 100立方千米），但在人类历史上没有记录。这些熔岩是形成大陆的巨大火山区域的主要组成部分。在南澳大利亚的高勒山脉火山中发现了很好的例子。人们对喷发机制知之甚少，但这些事件是理解地球深处大规模融化过程和大陆形成的关键。这项研究将使用来自南澳大利亚一个例子的现场数据来限制源火山中心的性质和位置，并澄清流出机制。