Abstract

The Kalgyn ophiolite massif is a unit of the ophiolite association of the Chersky collision belt. It is the part of the Verkhoyansk–Kolyma folded system on Northeast Asia. The Kalgyn massif includes a complex of mantle peridotites, a lower crustal complex, represented by ultrabasic cumulates, cumulative gabbro-amphibolites and amphibolites, and an upper crustal complex represented by metabasalts. New geochemical data, obtained by the ICP-MS method and data on the isotopic composition (Sm, Nd), made it possible to significantly clarify the geodynamic conditions for the formation of volcanics and to determine the features of the sources of parent melts.

中文翻译：

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新元古代蛇绿岩卡尔金地块（东北亚）的火山：新的地球化学和同位素数据

摘要

卡尔金蛇绿岩地块是切尔斯基碰撞带蛇绿岩组合的一个单元。它是东北亚维尔霍扬斯克-科雷马褶皱系的一部分。卡尔金地块包括地幔橄榄岩杂岩、以超基性堆积岩、累积辉长角闪岩和角闪岩为代表的下地壳杂岩，以及以变玄武岩为代表的上地壳杂岩。通过 ICP-MS 方法获得的新地球化学数据和同位素组成（Sm、Nd）数据，使得能够显着阐明火山岩形成的地球动力学条件并确定母体熔体来源的特征。