摘要
本文对新发现的塔城北石窑村岩体进行详细野外调查和取样分析,岩体主要为闪长玢岩-辉长闪长玢岩。地球化学分析结果:石窑村岩体SiO_(2)=53.04%~54.51%,Al_(2)O_(3)=16.17%~18.68%,Na_(2)O=3.97%~4.84%,K_(2)O=3.09%~3.98%,CaO=3.87%~4.45%,组合指数σ为5.14~6.63,碱度指数AR为2.09~2.25,A/CNK值为1.31~1.58,FL=64.5~67.26,ΣREE=229.544×10^(-6)~271.452×10^(-6),δEu=0.93~0.94;岩体属碱性系列,“I”型过铝型岩石,为大陆壳重熔的产物。
The Shiyaocun village rock body in N Tacheng,Xinjiang is introduced in this paper,which has been discovered,surveyed,sampled in the field and detail recently.It is mainly the diorite porphyrite and gabbro-diorite porphyrite,Sio_(2)53.04%~54.51%,Al_(2)O_(3)16.17%~18.68%,Na_(2)O 3.97%~4.84%,K_(2)O 3.09%~3.98%,CaO 3.87%~4.45%,according to the chemical analysis,σ5.14-6-6.63,AR2.09~2.25,A/CNK1.31~1.58,FL64.5~67.26,ΣREE229.544×10^(-6)~271.452×10^(-6),δEu0.93~0.94,rock body belonging to alkali series,“I”type peraluminous,continental crust remelting product.
作者
周涯
ZHOU Ya(Geological Team 404,Sichuan Exploration & Development Bureau of Geology & Mineral Resources,Chengdu 615000)
出处
《云南地质》
2021年第4期387-392,共6页
Yunnan Geology
关键词
闪长玢岩
岩石化学
地质年代
新疆塔城北
Diorite Porphyrite
Petrochemistry
Geological Dating
N Tacheng,Xinjiang
作者简介
周涯(1991~),男,四川达州市人,工程师,主要从事固体矿产勘查工作。
