岩石化学的

The rutile-hosted rocks are metamorphic rocks with amphibolite facie, but more work should be done to discuss features of their protolith.

这一化学特征显示了与岩相学观察相一致的结果，即富含金红石的岩石为透闪石含量偏低的直闪岩类。

Because a radioactive form of argon is produced by decay of a naturally occurring radioactive potassium isotope, it can be used to date rocks and samples more than 100,000 years old.

因为它是稀有天然放射性同位素钾衰变而产生的，所以可以用来测定十万年以上的岩石年龄和采样。属类：-〖化学

As our energy needs continue to grow and as oil and gas are less able to satisfy the demand for fuel, coal is becoming an extremely important chemical sedimentary rock once again.

当我们对能源的需求不断增长，当石油和天然气还不能满足我们对燃料的需求时，煤便成了一种极其重要的化学沉积岩石。

Samples of the typical hot springs of water, gas, tufa and rock were collected and analyzed systematically.

本文系统地采集了中国西南地区各地温泉水的水化学样品、气体样品及泉华样品、岩石样品，对各类样品进行了有目的的分析。

The shapes, occurences, rock types, mineral components and Petrochemical components of three ultrabasic rock groups all have different characteristics and show certain regularities. K-Ar and Sin-Nd iso...

各岩群的形态、产状、岩石类型、矿物成份、化学成份各有特点，表现出一定的规律性。K－Ar及Sm－Nd同位素年龄表明，这些超基性告形成于中元古宙、海西期及印支期。

Direct observations and measurements on deformational and sedimentary structures, fluid activities, physical properties, and chemical compositions of core samples from accretionary prisms at different pressure and temperature settings are critical to understanding seismogenic mechanisms of subduction zone earthquakes.

对增生楔不同压力-温度条件下的构造变形、流体活动、沉积特征、岩石物性和化学组成等多方面的直接观测，可以帮助分析俯冲带地震的蕴育和发生的环境与机理。

Author discussed geological characters of vein rock and co-relation with auriferous mineralization, and indirectly concluded the relationship of auriferous ore and rock body.

从岩石学、石化学、量元素、位素等方面讨论了脉岩的地质特征及其与金矿化的关系，可间接推出金矿与岩体的关系。

The mantle peridotites widely distributed along the Yarlung Zangbo River ophiolite zone are fresh rocks not subjected to serpentinization.

广泛分布在雅鲁藏布江蛇绿岩带的地幔橄榄岩是没有蛇纹石化的新鲜岩石，因而通过显微镜下观察和全岩化学分布探索其成因和地幔活动，是十分有利和简便的。

But, for the Type 3 of unequilibrated meteorites, its difficult to determine their chemical groups exactly as the mineral composition varies in a large range and probably there is water in the meteorites.

对于岩石类型为第3类的非平衡陨石，由于矿物成分变化较大，并可能有水等易挥发成分的存在，其化学群的划分不易确定。

Chemical compositions and genetic characteristics of plagioclases, biotites and amphiboles of typical Yanshanian intrusions in the core of Dabie Orogenic Belt are presented.

分析了大别造山带核部典型燕山期侵入体中的斜长石、黑云母和角门石的化学成分和成因特点，并从矿物平衡角度讨论了典型侵入体岩石成因。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。