3) leptynite
长英粒变岩
4) felsic granulite
长英质麻粒岩
1.
Geochronology and geodynamic implications of the felsic granulite xenoliths from the Hannuoba Basalt;
汉诺坝长英质麻粒岩包体同位素年代学及其地球动力学意义
2.
A felsic granulite from South Neimenggu(Inner Mongolia) of China has been deformed at the confining pressure of 1100 MPa, temperatures of 650~900℃, and strain rates of 10 -4 ~10 -7 s -1 .
在温度为650~900℃、围压为1100ΜΡa和应变率为10-4~10-7s-1的条件下,对大陆下地壳组成中的一类重要岩石——长英质麻粒岩进行了流变实验。
3.
LA-ICPMS U-Pb dating was conducted on three textural domains in zircon from a high-temperature high-pressure felsic granulite in the Huangtuling area, North Dabieshan, Central China.
本研究应用激光剥蚀技术测定了北大别黄土岭高温-高压长英质麻粒岩锆石3个结构域的UPb年龄。
5) high-pressure quartzo-feldspathic granulite
长英质高压麻粒岩
1.
A study on geochemical character of high-pressure quartzo-feldspathic granulite in Songshugou area, east Qinling, shows that its protolith is composed mainly of graywacke or arkose, and a little of subalkaline acid volcanic rock or magmatic rock with characteristies of mantle source.
地球化学特征研究表明,东秦岭松树沟长英质高压麻粒岩的原岩性质主体为杂砂岩或长石砂岩,少量为亚碱性的酸性火山岩或岩浆岩并具慢源成因;其古构造环境类似于活动大陆边缘。
6) fine porphyroid diroite
细粒似斑状闪长岩
补充资料:麻粒岩
麻粒岩 granulite 一种变质岩。又称粒变岩。属中高级区域变质作用产物。1803年魏斯首次命名。主要由长石、石英、辉石 (紫苏辉石、透辉石等)组成,有时含石榴石、矽线石、蓝晶石等。岩石中含水矿物不稳定,一般不含或少含。矿物多呈粒状,组成粗细条带,相间排列,形成麻粒结构。可根据暗色矿物含量分为两种类型:①暗色麻粒岩。暗色矿物 (紫苏辉石、透辉石、角闪石)达30%~80%。② 浅色麻粒岩,暗色矿物含量小于30%。通常认为,其变质作用属于典型的麻粒岩相的范围。有人主张只把具麻粒岩相典型矿物组合的变质岩称作麻粒岩。主要分布在太古宙至早元古代变质岩系中。
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