摘要
根据电子探针分析成果并结合矿物光性特征 ,在洋源南部万全岩群中浅变质岩中新发现蓝闪石类矿物——镁钠闪石。它产于闽西北与闽西南两大构造单元交接部位之南平—宁化构造岩浆岩带上 ,它的出现与四堡期—晋宁期构造作用密切相关 ,镁钠闪石的发现对于探讨该地区乃至福建大地构造演化 ,具有一定意义。
Based on the results of microprobe analysis and the mineral optical properties, the magnesioriebeckite (glaucophane family) was at first found in the metamorphic rock of Wangquanyan Group (Middle Proterozoic) in the southern part of Yangyuan Area, which exists in the Nangping Ninhua tectonomagmatic belt (situated in the intersect part between Northwestern Fujian and Southwestern Fujian Structural Units). The appearance of the magnesioriebeckite has a close relation with the tectonmetamorphism of Sibao Jinning Stage. The discovery of the above mentioned mineral magnesioriebeckite is some significance to the discussion of the tectonic evolution of the surveyed area and of Fujian Province.
出处
《福建地质》
2001年第2期91-95,共5页
Geology of Fujian
