Age of Granite Batholiths in the Anyui-Chukotka Foldbelt

S. M. Katkov; A. Strickland; E. L. Miller; J. Toro

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Age of Granite Batholiths in the Anyui-Chukotka Foldbelt

机译：阿努伊丘库特卡褶皱带花岗岩基岩时代

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The Alyarmaut Uplift, which hosts the studied granite intrusions, is located in the western Anyui-Chukotka foldbelt that represents the western framing of the South Anyui lineament (Fig. 1). The latter is typically considered a suture formed during Late Cretaceous collision between Eurasia and the Chukotka microcontinent.rnThe time of collision termination is controversial. The age of undeformed granitoids, which intrude the collisional structure, can serve as an indicator. We studied the internal structure of six granitoid massifs and their relations with host rocks and took samples for geochronological dating. Four massifs are situated in the Alyarmaut Uplift, while the Pyrkanai and Kelil'vun massifs are located to the south and east of the uplift (Fig. 1).

机译：Alyarmaut隆起地带承载着已研究的花岗岩侵入体，位于安南-楚科奇山脉的西部褶皱带中，该褶皱带代表了南安依南部系的西部框架（图1）。后者通常被认为是在欧亚大陆与楚科奇微大陆之间的晚白垩世碰撞过程中形成的缝合线。碰撞终止的时间是有争议的。侵入碰撞结构的未变形花岗岩的年龄可以用作指示。我们研究了六个花岗岩质块的内部结构及其与宿主岩石的关系，并取样进行了年代学测年。在Alyarmaut隆起中有四个地块，而Pyrkanai和Kelil'vun地块位于隆起的南部和东部（图1）。

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《Doklady Earth Sciences》 |2007年第4期|515-518|共4页
作者
S. M. Katkov; A. Strickland; E. L. Miller; J. Toro;
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Geological Institute, Russian Academy of Sciences, Pyzhevskii per. 7, Moscow, 119017 Russia;

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中图分类天文学、地球科学;
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Age of Granite Batholiths in the Anyui-Chukotka Foldbelt

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