摘要
野外调研及室内分析表明，秦岭杂岩中存在侧向变质分带．并曾发生侧向物质流动，侧向变质分带于晚加里东期冻结，侧向展市的硅线石－白云母带和硅线石－钾长石带的形成温压条件分别为５７９～５８４℃和５１７～５４３ＭＰａ及６８５～７２４℃和５３５～６２７ＭＰａ，晚加里东期秦岭杂岩的侧向物质流动导致了侧向变质带的形成。
Field geological studies and indoor analysis indicate that there exist lateral metamorphic zones in Qinlingcore complex and there happened substance flowage. The lateral metamorphic zones were frozen during lateCaledomian cycle' The lateral distributing metamorphic sillimanite-muscovite and sillimanite-k-feldsparzone were formed under the following metamorphic condition: temperature is 579～584℃ and 685～724℃,pressure is 517～543 MPa and 535～727 MPa. The lateral metamorphic zones succeeded to the substanceflowage during later-Caledonian cycle.
基金
国家自然科学基金
关键词
秦岭
造山带
核部杂岩
变质带
变质作用
Qinling core complex, lateral distributing metamorphic zones, metamorphism, lateral suuubstance flowage
