...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Geological Society of America Bulletin >The eruptive history, magmatic evolution, and influence of glacial ice at long-lived Akutan volcano, eastern Aleutian Islands, Alaska, USA
【24h】

The eruptive history, magmatic evolution, and influence of glacial ice at long-lived Akutan volcano, eastern Aleutian Islands, Alaska, USA

机译：冰川冰在长期的akutan火山，东部阿列丁群岛，美国，阿拉斯加，美国冰川冰的爆发史，岩石演进和影响

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

New Ar-40/Ar-39 and whole-rock geochemical data are used to develop a detailed eruptive chronology for Akutan volcano, Akutan Island, Alaska, USA, in the eastern Aleutian island arc. Akutan Island (166 degrees W, 54.1 degrees N) is the site of long-lived volcanism and the entire island comprises volcanic rocks as old as 3.3 Ma. Our current study is on the 225 km(2) western half of the island, where our results show that the focus of volcanism has shifted over the last similar to 700 k.y., and that on occasion, multiple volcanic centers have been active over the same period, including within the Holocene. Incremental heating experiments resulted in 56 Ar-40/Ar-39 plateau ages and span 2.3 Ma to 9.2 ka.
机译：None

著录项

相似文献

  • 外文文献
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