The termination of the southern New Hebrides subduction zone (southwestern Pacific)
The termination of the southern New Hebrides subduction zone (southwestern Pacific)
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DOI：
10.1016/0040-1951(84)90050-7
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发表时间：
1984-01
期刊：
影响因子：
2.9
通讯作者：
M. Monzier;P. Maillet;J. Herrera;R. Louat;F. Missègue;B. Pontoise
中科院分区：
文献类型：
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作者：
M. Monzier;P. Maillet;J. Herrera;R. Louat;F. Missègue;B. Pontoise
最近的数据(水深图和岩石学调查)以及20多年来对当地地震事件的重新评估使我们能够对南部新赫布里底俯冲带提出新的地球动力学解释。对这一复杂区域的多学科研究表明，中等地震活动、岩石圈板块构造和火山活动之间的相互关系清晰可见。根据我们的模型，沿着与会聚矢量(N70°E)平行的方向撕裂下行板块的两个铰链带，合理地解释了该地区的大部分地震学和岩石学数据。洛亚尔群岛海脊向海沟靠近及其对俯冲制度的影响越来越大，这开始使这一计划复杂化。
Recent data (bathymetric map and petrological investigations) as well as reappraisal of local seismological events for more than 20 years allow us to present a new geodynamic interpretation of the southern New Hebrides subduction zone. A multidisciplinary approach to this complex area, where transform movements relay subduction process, clearly shows the interrelationships between intermediate seismicity, lithospheric plates tectonics and volcanic activity. According to our model, two hinge zones, tearing the downgoing slab along directions which parallel the convergence vector (N70°E), reasonably account for most seismological and petrological data from the region. The approach of the Loyalty islands ridge towards the trench and its increasing influence on the subduction regime is beginning to complicate this scheme.