High-pressure metamorphic age and significance of eclogite-facies continental fragments associated with oceanic lithosphere in the Western Alps (Etirol-Levaz Slice, Valtournenche, Italy)

Fassmer Kathrin; Obermueller Gerrit; Nagel Thorsten J.; Kirst Frederik; Froitzheim Nikolaus; Sandmann Sascha; Miladinova Irena; Fonseca Raul O. C.; Muenker Carsten

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High-pressure metamorphic age and significance of eclogite-facies continental fragments associated with oceanic lithosphere in the Western Alps (Etirol-Levaz Slice, Valtournenche, Italy)

机译：西阿尔卑斯山高压岩石的变质年龄和与海洋岩石圈有关的榴辉岩相大陆碎片的意义（意大利瓦尔图尔嫩切，Etirol-Levaz Slice）

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The Etirol-Levaz Slice in the Penninic Alps (Valtournenche, Italy) is a piece of eclogite-facies continental basement sandwiched between two oceanic units, the blueschist-facies Combin Zone in the hanging wall and the eclogite-facies Zermatt-Saar Zone in the footwall. It has been interpreted as an extensional allochthon from the continental margin of Adria, emplaced onto ultramafic and mafic basement of the future Zermatt-Saar Zone by Jurassic, rifting-related detachment faulting, and later subducted together with the future Zermatt-Saas Zone. Alternatively, the Etirol-Levaz Slice could be derived from a different paleogeographic domain and be separated from the Zermatt-Saas Zone by an Alpine shear zone.

机译：Penninic Alps（意大利瓦尔图尔嫩切）的Etirol-Levaz片是一块榴辉岩相的大陆基底，夹在两个海洋单元之间，蓝岩岩相的Combin区位于悬壁中，而榴辉岩相的Zermatt-Saar区位于下盘。它被解释为是阿德里亚大陆边缘的延伸性异位线，被侏罗纪，裂谷相关的剥离断层置于未来的采尔马特-萨尔地带的超镁铁质和镁铁质基底上，随后与未来的采尔马特-萨斯地带一起俯冲。或者，Etirol-Levaz切片可以源自不同的古地理域，并通过高山剪切带与Zermatt-Saas带分开。

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来源
《Lithos: An International Journal of Mineralogy, Petrology, and Geochemistry》 |2016年第null期|共15页
作者
Fassmer Kathrin; Obermueller Gerrit; Nagel Thorsten J.; Kirst Frederik; Froitzheim Nikolaus; Sandmann Sascha; Miladinova Irena; Fonseca Raul O. C.; Muenker Carsten;
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正文语种 eng
中图分类地质学;
关键词
Eclogite; Subduction; Western Alps; Zermatt-Saas Zone; Continental crust; Lu-Hf geochronology;

机译：榴辉岩;俯冲;西阿尔卑斯山;策马特-萨斯地区;陆壳;Lu-Hf年代学;

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1. High-pressure metamorphic age and significance of eclogite-facies continental fragments associated with oceanic lithosphere in the Western Alps (Etirol-Levaz Slice, Valtournenche, Italy) [J] . Fassmer Kathrin, Obermueller Gerrit, Nagel Thorsten J., Lithos: An International Journal of Mineralogy, Petrology, and Geochemistry . 2016,第Null期

机译：西阿尔卑斯山高压岩石的变质年龄和与海洋岩石圈有关的榴辉岩相大陆碎片的意义（意大利瓦尔图尔嫩切，Etirol-Levaz Slice）
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机译：始新世榴辉岩相变质过程中洋壳与大陆壳的耦合：来自西阿尔卑斯山蒙特罗莎推覆的证据
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5. Experimental and field-related investigations on the metamorphic history of eclogites in the Sesia-Lanzo Zone, Western Alps (Italy). [D] . Tropper, Peter. 1998

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High-pressure metamorphic age and significance of eclogite-facies continental fragments associated with oceanic lithosphere in the Western Alps (Etirol-Levaz Slice, Valtournenche, Italy)

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