• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Volcanology and Geothermal Research >Internal vs. external forcing in shallow marine diatreme formation: A case study from the Iblean Mountains (SE-Sicily, Central Mediterranean)
【24h】

Internal vs. external forcing in shallow marine diatreme formation: A case study from the Iblean Mountains (SE-Sicily, Central Mediterranean)

机译：浅层海洋异常形成中的内部与外部强迫：以伊布兰山脉为例（地中海中部，西西里岛）

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A model of diatreme evolution in a shallow marine setting is based on a multi-disciplinary analysis of diatremes in the Iblean Mountains (Sicily). The approach includes stratigraphic, volcanological, structural, petrologic and compositional data. We invoke a complex interplay of internal (rapid ascent and pyroclastic fragmentation of a volatile (CO_2)-rich nephelinitic magma at depth) and external factors. These comprise hydrodastic explosions due to near-surface interaction of the rising particle/volatile mixture with seawater and water-saturated lime mud. Other external factors contributing to diatreme formation include regional and local tectonics (graben formation in pull-apart motion) combined with lateral pipe enlargement by bedrock-spalling and radial block subsidence into the diatreme pipe. We suggest that fragmentation of volatile-rich magma due to internal eruption forcing was fundamental in the formation of the Iblean shallow marine diatremes. Internal and external factors may act to a variable degree, however, during diatreme evolution in general.
机译：在浅海环境中的极端进化的模型基于对伊布兰山脉（西西里岛）的极端疾病的多学科分析。该方法包括地层，火山学，结构，岩石学和成分数据。我们调用内部（外部深处挥发性（CO_2）富集的松质岩浆的快速上升和热碎裂作用）的复杂相互作用。这些包括由于上升的颗粒/挥发性混合物与海水和水饱和的石灰泥的近地表相互作用而引起的水溶爆炸。影响透水层形成的其他外部因素包括区域和局部构造（拉动运动中的胶结层形成），以及通过基岩剥落和径向块沉降到透水层管中而引起的侧向管扩大。我们认为，由于内部喷发强迫而造成的富含挥发物的岩浆的破碎是伊比伦浅海裂变形成的基础。总体而言，内部和外部因素可能在不同程度的演变过程中发挥作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号