【摘要】 本文通过对攀枝花层状含矿岩体产生地质背景的详细研究以及据岩体中辉石单矿物⁴⁰Ar/⁸⁹Ar年龄（1508.8±5.17Ma）,修正了前人对该岩体形成时代的认识;根据岩体的地质产状、岩石化学成分、微量元素特征与区内康定群中变质基性岩对比,发现克拉通带范围内基性岩浆具有序列性演化规律,得出层状含矿岩体是区域基性岩浆演化的最终产物的结论;由于岩体韵律层构造具有施回性特点,提出基性岩浆多期多阶段成岩成矿作用的观点。这些认识将为区域矿产普查、评价提供有意义的基础资料。更多还原

【Abstract】 The Panzhihua layered V-Ti-Fe bearing gabbro, according to the 334 Ma K-Ar whole rock age up to now has been regarded as to be formed during Hercynian orogeny.This paper, based on detarled field research an age of 1508,5±5.17 Ma of the pyroxene from the pluton by 40Ar/39Ar method, has alloted the pluton to pre-sinian still according to the characteristic sequential evolution in chemical composition and trace elements of the pluton, thecountry rock and the zarrounding basic rocks, the ore bearing gabbro is regarded to be the final evolutionary product of a basic magma; finally, according to the cyclic occurrence of the plutonic body, the formation of the rock and ore is supposed to be multiple episodic and multiple stages.The new recognition provided significant base for investigation and evaluation of the mineral resources in this region.更多还原