火成岩

Emeishan large igneous province; picrite; geochemistry; mantle plume; petrogenesis

中文主题词：峨眉山大火成岩省；苦橄岩；地球化学；地幔柱；岩石成因

And the late Triassic bimodal association reflects the characteristics of intracontinental rift setting, the early Jurassic Raohe ultramafic - mafic rock - pillow lava association represent the environmental characteristics of oceanic island, magmatic arc association represent the characteristics of island arc and active continental margin with the background of the plate subduction, middle Jurassic syn-orogenic granodiorite-granite association reflects characteristics of matching and orogensis after continental accretion.

其中晚三叠世双峰式组合反映了板内裂谷成因特征，早侏罗世饶河超镁铁质-镁铁质岩-枕状熔岩组合代表了洋岛环境特征，岩浆弧火成岩组合代表了板块俯冲背景下岛弧和活动大陆边缘特征，中侏罗世同造山花岗闪长岩-二长花岗岩组合反映了陆缘增生后拼贴造山的成因特点，它们总体上代表了由被动陆缘裂向活动陆缘转化并最终发生陆缘增生带拼贴造山的一个演化过程，其间伴随有被动陆缘深海盆地沉积、活动陆缘弧后前陆盆地沉积和陆相类磨拉石建造

In vain the plutonic rocks send their old heat against my approach

火成岩喷出了千年的烈火来反对我接近是徒然的

A m ral consisting of titanium dioxide in crystalline form; occurs in metamorphic and plutonic rocks and is a major source of titanium.

一种含有二氧化钛的矿物，呈晶体状，见于变质岩和火成岩中，是钛的主要来源。

Any of a group of abundant rock-forming minerals occurring principally in igneous , plutonic, and some metamorphic rocks, and consisting of silicates of aluminum with potassium, sodium, calcium, and, rarely, barium.

"任何一组由大量岩石形成的矿物，主要存在于火成岩、深成岩以及一些变性的岩石中，含有钾、钠、钙及极少的钠的铝硅酸盐，地球的外层地壳中约百分之六十是长石。"

Any of a group of abundant rock-forming minerals occurring principally in igneous, plutonic, and some metamorphic rocks, and consisting of silicates of aluminum with potassium, sodium, calcium, and, rarely, barium.

长石任何一组由大量岩石形成的矿物，主要存在于火成岩、深成岩以及一些变性的岩石中，含有钾、钠、钙及极少的钠的铝硅酸盐，地球的外层地壳中约百分之六十是长石

A weakly magnetic black mineral found in metamorphic and plutonic rocks; an iron titanium oxide in crystalline form; a source of titanium .

一种具有弱磁性的黑色矿物，见于变质岩和火成岩中，晶体状铁钛氧化物，是钛的来源。

Any of a group of abundant rock-forming minerals occurring principally in igneous, plutonic, and some metamorphic rocks, and consisting of silicate s of aluminum with potassium, sodium, calcium, and, rarely, barium.

"任何一组由大量岩石形成的矿物，主要存在于火成岩、深成岩以及一些变性的岩石中，含有钾、钠、钙及极少的钠的铝硅酸盐，地球的外层地壳中约百分之六十是长石。"

A weakly magnetic black m ral found in metamorphic and plutonic rocks; an iron titanium oxide in crystalline form; a source of titanium.

一种具有弱磁性的黑色矿物，见于变质岩和火成岩中，晶体状铁钛氧化物，是钛的来源。

Any of a group of abundant rock - forming minerals occurring principally in igneous,plutonic,and some metamorphic rocks,and consisting of silicate s of aluminum with potassium,sodium,calcium,and,rarely,barium.

长石任何一组由大量岩石形成的矿物，主要存在于火成岩、深成岩以及一些变性的岩石中，含有钾、钠、钙及极少的钠的铝硅酸盐，地球的外层地壳中约百分之六十是长石

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。