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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 >The evolution of the Calabrian Arc: Evidence from paleomagnetic and GPS observations
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The evolution of the Calabrian Arc: Evidence from paleomagnetic and GPS observations

机译：卡拉布里亚弧的演变：来自古磁和GPS观测的证据

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摘要

The present-day arcuate shape of the Calabrian Arc has been accomplished during Neogene and Early Pleistocene by large and opposite vertical axis rotations along the two arms of the Arc. Clockwise (CW) rotations have been systematically registered in Sicily and Calabria, whereas counterclockwise (CCW) rotations were measured in Southern Apennines. Such opposite vertical axis rotations ceased in the uppermost part of the Lower Pleistocene (about 1 Ma ago) along almost the entire Calabrian Arc and are not observed in the present-day GPS velocity field. The end of the Calabrian Arc bending during the Quaternary marks a decrease in the efficiency of the tectonic processes related to the long-lived subduction of the Ionian slab, which caused the halting of the back-arc opening in the Southern Tyrrhenian Sea. (c) 2007 Elsevier B.V. All rights reserved.
机译：卡拉布里亚弧的当今弓形已经在新近纪和早更新世期间通过沿弧的两个臂进行较大且相反的垂直轴旋转而实现了。西西里岛和卡拉布里亚已系统地记录了顺时针（CW）旋转，而南亚平宁山脉则测量了逆时针（CCW）旋转。这种相反的垂直轴旋转几乎沿着整个卡拉布里亚弧在下更新世的最上部（大约1 Ma之前）停止了，并且在当今的GPS速度场中没有观察到。第四纪卡拉布里亚弧形弯曲的结束标志着与爱奥尼亚板块长期俯冲有关的构造过程的效率下降，这导致了第勒尼安海南部弧后开口的停止​​。 （c）2007 Elsevier B.V.保留所有权利。

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