中文摘要：

新疆阿克苏蓝片岩是目前世界范围内保存最好的前寒武纪蓝片岩之一。一般认为蓝闪石片岩是在低温高压条件下形成的，且与板块俯冲有密切联系。本文对阿克苏蓝片岩地体的泥质片岩和砂质片岩中的白云母进行了电子探针分析，通过对得到的Si含量数据进行统计，探讨了蓝片岩地体不同区域所受压力的变化，进而用矿物组合、矿物形变、多硅白云母压力计等分析方法讨论了变质温压区间和温压关系。研究结果表明阿克苏蓝片岩带南侧岩石承受的变质压力明显大于北侧，这可能指示了古洋壳板块从北向南的俯冲方向。

英文摘要：

The Aksu blueschist beh is one of the best documented Precambrian blueschist behs in the world. It is known that blueschist formed under conditions of high-pressure and low-temperature is related to the subduction of convergent plates. In this paper, phengite in pelitic schist and sandy schist of the Aksu buleschist was analyzed with EPMA. Using statistics date of Si contents, we discussed the variation of pressure in different zones of the Aksu buleschist terrane. From this, we obtained the metamorphic p-T conditions and their relationship with the methods of analysis for mineral composition and deformation, additional phengite pressure range. The result suggested that metamorphic pressure in the south is much higher than that in the north, and this may indicate the southward subduction.