摘要
在太行山构造-岩浆-多金属成矿带上沿NNE向发育大量的中-酸性侵入岩,其中太行山北段阜平南部的麻棚岩体与石湖金矿成矿因素关系紧密,因此倍受关注。本文报道了麻棚岩体北部过渡带中花岗闪长岩SHRIMPU-Pb年代学数据(125.0±3.4Ma),该年龄是目前已知太行山北段中生代侵入岩年龄值中最年轻的。同时这一结果表明,直至125Ma,太行山北段的岩浆活动依旧活跃;其次,该年龄对太行山北段NW向断裂系统的活动时间进行了限定。
A lot of intermediate acid intrusions are distributed along the tectonic-magmatic- polymetallic metallogenic belt in the Taihang Shan Mountains of the NEE direction. The Mapeng complex granite in the southern Fuping in the northern Taihang Mountains receives much attention because of its close relationship with ore-forming elements of the Shihu gold deposit. This paper reports the data of the SHRIMP U-Pb age （ 125.0±3.4 Ma） in the transitional zone of the northern Mapeng granite complex. This is the youngest among the data of the known Mesozoic intrusions in the northern Taihang Shan Mountains. Meanwhile, this result shows that until 125 Ma the magmatie activity of the northern Taihang Shah Mountain was still ongoing, and it also defines the time span of activity of the NW fauh-system in this area.
出处
《地质与勘探》
CAS
CSCD
北大核心
2010年第4期622-627,共6页
Geology and Exploration
基金
国家自然科学基金项目(40672150)资助
