...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >Comparison between the Chile and Mexico triple junction areas substantiates slab window development beneath northwestern Mexico during the past 12-10 Myr
【24h】

Comparison between the Chile and Mexico triple junction areas substantiates slab window development beneath northwestern Mexico during the past 12-10 Myr

机译：智利和墨西哥三重交界处之间的比较证实了过去12-10 Myr墨西哥西北部下方的平板窗发展

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

When combined with the Miocene-Recent volcanic record of Baja California, a parallel drawn between the Chile and Mexico triple junction areas substantiates slab window development beneath northwestern Mexico during the past 12-10 Myr. The slab-free zone manifestations challenge the notion that ridge subduction has not occurred beneath the southern Baja California peninsula. The geochemically distinctive rocks from the Santa Clara volcanic field of west-central Baja California, including coeval adakites and niobium-enriched basalt, are commonly inferred to signal partial melting of the subducting plate at shallow depths and relatively high temperatures, before slab dehydration occurs. Such PT conditions for slab melting have only been observed in association with spreading-ridge subduction. We propose that slab window development beneath southern Baja California and mainland Mexico (30° to 18°N) resulted from subduction of the East Pacific rise.
机译：与下加利福尼亚州的中新世-最近火山记录相结合，智利和墨西哥三重交界处之间的平行线证实了过去12至10 Myr墨西哥西北部平板岩窗的发育。无板带的表现挑战了南下加利福尼亚半岛下方没有发生俯冲的观点。通常认为，来自下加利福尼亚州中西部圣塔克拉拉火山场的地球化学特征岩石，包括前古时代的白云石和富铌的玄武岩，在平板脱水发生之前就暗示了俯冲板在浅深度和相对高温下的部分融化。仅在与扩展脊俯冲有关的情况下观察到这种用于板坯熔化的PT条件。我们认为，南下加利福尼亚州和墨西哥大陆（北纬30°至18°）下方的平板窗发展是由于东太平洋上升带俯冲而引起的。

著录项

相似文献

  • 外文文献
  • 中文文献
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