摘要
内蒙古卓资地区零星分布的含磷灰石白云质大理岩的成因一直是有争议的问题,争论的焦点在于它是沉积变质的碳酸盐岩还是岩浆碳酸岩。对这个问题的不同认识直接关系到这种岩石本身是否具有形成岩浆碳酸岩型磷灰石矿床的可能。本文在对含磷灰石白云质大理岩进行比较详细的地质、矿物、岩石和地球化学等诸方面研究的基础上,确认它是沉积变质的碳酸盐岩,而不是岩浆碳酸岩,该大理岩本身不具备形成岩浆碳酸岩型磷灰石矿床的条件。
The origin of the apatite-bearing dolomatic marbles in the area of Zhuozi, Inner Mongolia has been controversial. Two major petrogenetic views proposed include:1) metamorphism of the sedimentary carbonate rocks; 2) crystallization of carbonatite magma. This study focuses on the mineralogy, petrology, geochemistry and isotope of themarbles to clarify their origin. On the basis of the study, we confirm that the apatitebearing dolomatic marbles are metasedimentary carbonate rocks and conclude that the marbles themselves do not possess the requirements for forming the carbonatitic apatite deposits.
出处
《现代地质》
CAS
CSCD
1991年第2期208-214,共7页
Geoscience
关键词
大理岩
成因
白云质
内蒙古
: Apatite-bearing dolomatic marbles, carbonatite, metasedimentarycarbonate rocks
