本文選題：卓潘堿性雜巖體 + 電子探針��； 參考：《現(xiàn)代地質(zhì)》2017年03期

【摘要】：卓潘雜巖體是金沙江—哀牢山富堿侵入巖帶的重要組成部分,位于蘭坪盆地西部。巖體主要由輝長(zhǎng)巖、輝石巖及正長(zhǎng)巖組成,各巖石的K_2O含量為0.96%~7.36%,Na_2O含量為0.52%~6.62%,Na_2O+K_2O含量為1.98%~8.97%,K_2O/Na_2O比值介于0.35~11.15之間,屬于高鉀、富堿的鉀玄巖系列。巖石中的輝石為透輝石,長(zhǎng)石主要為鈉長(zhǎng)石(An5)和正長(zhǎng)石,黑云母為鎂質(zhì)黑云母。計(jì)算獲得輝石的結(jié)晶溫度范圍介于1 070~1 490℃之間。各礦物成分特征表明卓潘雜巖體屬于富鐵、高氧逸度的巖漿體系,形成于后碰撞的擠壓環(huán)境向伸展環(huán)境轉(zhuǎn)換的構(gòu)造背景。
[Abstract]:The Zhuopan complex is an important part of the Jinshajiang-Ailaoshan alkali-rich intrusive rock belt, located in the western part of the Lanping basin. The rock mass is mainly composed of gabbro, pyroxenite and syenite. The K _ 2O content of each rock is 0.96 / 7.36 and the content of Na2O is 0.52 / 6.62. The K _ 2O / Na _ 2O ratio of K _ 2O / Na _ 2O is between 0.3511.15 and belongs to the series of high-potassium and alkali-rich kalomite. The pyroxene in the rock is diopside, the feldspar is mainly albite An5) and orthoclase, and the biotite is magnesia biotite. The crystallization temperature range of pyroxene is from 1 070 鈩，

本文編號(hào)：1983527