查询词典 mafic

As one of major mineral phases in the intermediate-mafic intrusions in Southern Taihang Mountains , amphibole can be used to constrain its petrogenesis.

角闪石作为南太行山地区中基性侵入岩中主要组成矿物，其详细的成因矿物学研究对了解该套岩石的形成机理具有重要意义。

Ma (early epoch of early Cretaceous) mafic dikes from south and north Jiangxi province, respectively, are available to comparative geological and geochemical discuss reveal that they are related to curst extension event and distinguish between rock series and trace element and isotopic characteristics of mafic dikes from south and north Jiangxi.

对赣南大吉山地区和赣北地区早白垩世基性岩脉的地质地球化学特征进行了系统的研究，表明它们可能代表中国东南部早白垩世初存在一次重要的岩石圈伸展和地壳拉张事件。

The most effective method to study rheology of mafic granulite is to perform creep tests using natural gabbro as well as using hot pressed synthetic samples prepared from the major mineral components extracted from mafic granulite.

选择与基性麻粒岩中主要矿物成分接近的天然辉长岩，或者从天然基性麻粒岩中挑选出主要矿物，通过热压合成人工样品，进行高温流变实验是研究基性麻粒岩流变的最有效途径。

Mafic granulite and gabbro xenoliths are also found in the same kimberlitic pipes from the Eastern-North China platform, and suggest that multi-accretion events took place. The gabbro was formed lighly earlier with the host kimberlite. The underplating of the mafic magmas was related to the continental orogeny in the late middle-Ordovician Period.

金伯利岩中强烈变质的基性麻粒岩以及变质不彻底的粗粒辉长岩在同一岩管中共存，表明华北古老岩石圈地幔所发生的多次增生作用事件，特别是后者的变质不彻底变质作用暗示其形成时代与金伯利岩相近，这种基性岩浆的底侵作用与华北地台中奥陶世晚期的造陆抬升有关。

In this paper, though the field geological investigations, and studies of element-isotope geochemistry, mineralogy and the geo-chronology, combining with the regional geotectonic analysis, the geochemical characteristics and petrogenesis of the mafic dikes from the coastal areas of Guangdong Province and Hainan Island are discussed, mafic magma episodes and mantle characteristics are analyzed, and the relationships between mafic magmatism and lithosphere evolution are studied.

本论文通过野外地质调查和一系列配套的岩石化学、微量元素、同位素地球化学、矿物学及年代学方法，结合区域地质构造分析，对广东沿海地区及海南岛基性岩脉的地球化学特征、成因、基性岩浆活动期次、地幔源区地球化学特征，以及岩石圈结构特征、形成机理和演化等进行了探索性的研究，得出以下几点认识： 1。

Hundreds of mafic volcanoes scattered through the Three Sisters region are part of a much longer zone along the High Cascades of Oregon in which birth of new mafic volcanoes is possible.

散布在三姐妹山区的数百座铁镁质火山是沿着俄勒冈高台的更大区域的一部分，在那里，可能会产生新的铁镁质火山。

The source of 100-110Ma and 90±Ma mafic dikes is similar to that of 125±Ma mafic dikes, and the source of 100-110Ma mafic dikes include more depleted mantle content.

这两期的基性岩脉的源区可能由亏损地幔、EMⅠ和EMⅡ地幔组分组成，与（125±Ma）基性岩脉类似，但早白垩世未期（100～110Ma）基性岩脉的源区可能含有相对较高的亏损地幔组分。

Recent studies suggest that the Mesozoic granitoids and the contemporary mafic and ultra-mafic rocks from the North China block and Dabie-Sulu orogenic belt have the similar Sr, Nd isotopic characteristics, and many of the granitoids and volcanic rocks exhibit some features of adakites.

近年来的研究证实，华北地台和大别—苏鲁造山带的中生代花岗岩与同时代的镁铁质超镁铁质岩有类似的Sr、Nd同位素特点，许多花岗岩和火山岩还具有类似埃达克岩的地球化学性质。

Based on zircon SHRIMP U-Pb, Sm-Nd and Ar-Ar isotopic datings and trace elements data of zircon and whole rock of the mafic granulite from Huilanshan in Lotian doming, we concluded that the protolith of the mafic granulite shoud be the Neoproterozoic mafic rocks, the granulite facies metamorphism of this rock was occurred at 124.0?.

罗田穹隆惠兰山基性麻粒岩的锆石U-Pb、Sm-Nd和Ar-Ar定年及锆石和全岩微量元素地球化学工作证明该麻粒岩的原岩形成于晚元古代，其麻粒岩相变质作用发生在124.0？。

Petrologic and geochemical investigations of mafic dikes in detail were concentrated in north Gangdong from southeast China so far, a few half-backed study on mafic dikes of south Hainan and coastal belt of Fujian and southeast Hunan and ore region of some hydrothermal deposits, so systemically and large area investigations of mafic dikes from southeast China is still few and need to undertake in the future.

由于出露面积的关系，岩脉或岩脉群往往容易被人忽略，直到最近五年来中国东部中新生代基性岩脉的地球动力学意义才引起地质学者的关注，甚至有些学者指出中国东部中生代基性岩脉的研究可以填补国际上对此方面的空白。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。