中国南部长江上游地区的一系列富铁、钛的层状基性-超基性侵人体,侵入于前寒武纪地层内,空间上与侵入时间略晚的碱性正长岩、正长岩密切伴生,二者可能属同一岩浆建造。一些研究资料指出,层状侵入体相当于早二迭世的峨眉山玄武岩的侵入相。 本文主要介绍P、L、B三个层状侵入体中铁-钛氧化物矿物的研究资料。关于它们 A series of iron- and titanium-rich bedrock-ultrabasic intrusions in the upper reaches of the Yangtze River in southern China have intruded into the Precambrian strata and slightly older alkaline intrusive rocks, Closely associated, both may belong to the same magma. Some research data indicate that the layered intrusions are equivalent to the Early Permian Emeishan basaltic intrusive facies. This paper mainly introduces the research data of iron-titanium oxide minerals in three layered invaded bodies of P, L and B. About them