Abstract A fragment of the ophiolite sequence composed of dunites, wherlites, pyroxenites, gabbro, gabbro-dolerites, and plagiogranites was described within the structure of the North Balkhash Zone of Paleozoides of Central Kazakhstan. This fragment represents a large block enclosed in the serpentinite mélange (Tesiktas massif). The Early Cambrian date ( 206 Pb/ 238 U; 531 ± 1 Ma) was obtained for the first time for plagiogranites of this massif. The age estimate is thought to indicate the termination time of the formation of the plutonic part of the ophiolite sequence.

中文翻译：

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早寒武世蛇绿岩层序碎片的年龄和结构（哈萨克斯坦中部北巴尔喀什地区）

摘要 在哈萨克斯坦中部古生界北巴尔喀什带构造中描述了一段由纯辉长岩、辉长岩、辉石岩、辉长岩、辉长辉长辉长岩和斜长花岗岩组成的蛇绿岩序列片段。这个碎片代表了一个包含在蛇纹石混杂岩（Tesiktas massif）中的大块体。首次获得该地块斜长花岗岩的早寒武世年代（206 Pb/238 U；531±1 Ma）。年龄估计被认为表明蛇绿岩层序深成岩部分形成的终止时间。