新疆金窝子区含金糜棱岩带的微构造特征

来源期刊：中南大学学报(自然科学版)1993年第2期

论文作者：张文山

文章页码：143 - 148

关键词：新疆-金窝子地区; 金矿; 糜棱岩; 显微构造

Key words：Xinjiang-Jinwozi area; gold deposit; mylonite; microstructure

摘    要：金窝子区含金糜棱岩带中微构造具有明显的分异特征。糜棱岩薄片中有基质、碎屑、复劈理带和由复劈理包围的显微“鞍状角砾”等几种域状构造;微构造域之间的矿物成份,主要造岩元素,稀土元素和石英氧同位素(δO¹⁸)等能揭示SiO₂的来源、迁移和沉淀等方面的特征。

Abstract: In Jinwozi area,evident differentiation feature exists in the microstructure of gold-bear-ing mylonitic zone.Thin sections of mylonite have several microstructural domains:matrix,detritus,composite cleavage and“microphacoids”enclosed by cleavages.From domain todomain,major rock-forming elements,REE and oxygen isotope(δO¹⁸)of quarts are used toshow some features on the source,transfer and precipitation of SiO₂.