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首页> 外文会议>Keck Research Symposium in Geology >A GEOCHEMICHAL AND PETROLOGIC ANALYSIS OF THE HRAFNFJORDUR CENTRAL VOLCANO, WESTFJORDS, ICELAND
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A GEOCHEMICHAL AND PETROLOGIC ANALYSIS OF THE HRAFNFJORDUR CENTRAL VOLCANO, WESTFJORDS, ICELAND

机译：Hrafnfjordur中央火山，Westfjords，冰岛的地球化学和岩石学分析

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INTRODUCTION Iceland is located along the Mid-Atlantic Ridge (MAR), the divergent plate boundary between the North American and Eurasian Plates. The MAR is expressed on land by a zone of active rifting and increased volcanism called the Neovolcanic Zone. Iceland is also a volcanic hotspot, located above a mantle plume that generates increased magmatic activity on the surface. The interaction between the MAR and the mantle plume leads to the process of rift relocation. As the plate boundary moves westward in relation to the hotspot, the rift dies out and the active rift relocates eastward towards the hotspot (Hardarson et al., 1997). This process leaves behind evidence of abandoned rift zones. The Hrafnfjordur central volcano erupted from the extinct Skagi-Snaefellsnes rift zone that was active between 15-7 Ma.
机译：简介冰岛沿着大西洋山脊（MAR），北美和欧亚板材之间的不同板边界。 MAR在土地上由一个积极的渔平和增加的火山众多称为Neovolcanic区。冰岛也是火山热点，位于披风羽流之上，在表面上产生增加的岩石活动。 MA和披风羽流之间的相互作用导致RIFT重新定位的过程。由于板边界向西移动到热点，裂缝模具和活跃的裂缝向东迁移到热点（Hardarson等，1997）。这个过程留下了废弃的裂缝区的证据。 HRAFNFJORDUR中央火山爆发了灭绝的SKAGI-SNAEFELLSNE RIFT区，在15-7 mA之间活跃。

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