Cenozoic strike-slip faulting from the eastern margin of the Wilkes Subglacial Basin to the western margin of the Ross Sea Rift: an aeromagnetic connection
Cenozoic strike-slip faulting from the eastern margin of the Wilkes Subglacial Basin to the western margin of the Ross Sea Rift: an aeromagnetic connection
复制标题
从威尔克斯冰下盆地东缘到罗斯海裂谷西缘的新生代走滑断层：航磁联系
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
E. Bozzo
中科院分区：
文献类型：
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作者：
F. Ferraccioli;E. Bozzo
区域航磁异常模式的构造模拟表明，新生代右行走滑断裂沿横贯北极山脉及其邻近腹地的继承性断裂系统发生。我们在这里将其命名为阿尔伯特王子断层系统。里维斯断裂和大卫断裂是新生代右行走滑断裂，是这一复杂断裂系统的NW-SE走向段的一部分，一直延伸到威尔克斯冰下盆地的东缘。因此，我们的航磁解释表明，威尔克斯冰下盆地可能与横贯北极山脉和罗斯海裂谷西部的新生代走滑运动学框架有关。阿尔伯特王子断裂系统的最南端平行于北S走向的麦克默多断裂带，并与之一起定义了罗斯海裂谷边缘的伸展西侧。高分辨率的航磁图像确定了罗伯茨角拉分盆地，并表明新生代岩浆活动可能集中在罗斯海裂谷边缘西部的伸展方向。
Abstract Tectonic modelling of regional aeromagnetic anomaly patterns suggests Cenozoic right-lateral strike-slip faulting along an inherited fault system of the Transantarctic Mountains and adjacent hinterland. We name it here the Prince Albert Fault System. The Reeves Fault and David Fault are Cenozoic right-lateral strike-slip faults and form part of the NW-SE-striking segment of this complex fault system, extending to the eastern margin of the Wilkes Subglacial Basin. Our aeromagnetic interpretation suggests therefore that the Wilkes Subglacial Basin may be connected to the Cenozoic strike-slip kinematic framework of the Transantarctic Mountains and western Ross Sea Rift. The southernmost segment of the Prince Albert Fault System parallels the N-S-striking McMurdo Sound Fault Zone and, together with it, defines a transtensional western Ross Sea Rift margin. High-resolution aeromagnetic images define the Cape Roberts pull-apart basin and suggest that Cenozoic magmatism may have focused along the transtensional western Ross Sea Rift margin itself.