查询词典 volcanic activity

The results showed that , The shale has higher volcanic ash activity with calcined temperature from 700℃ to 800℃.

结果发现，在700～800 ℃范围内煅烧的页岩具有明显的火山灰活性，掺入经活化处理的页岩配制的混合水泥具有较好的强度性能。

Based on the previous research, this article discussed the sulphide, the nitrate, organic pollution heavy metal and volcanic dust, etc., which tie up to the human activity.

本文在总结前人研究的基础上，重点讨论了硫化物、碳黑、氮氧化物及硝酸盐、有机污染物以及重金属等大气中与人类活动密切相关的微粒物质

Geochemical characteristics indicate S-type granites and volcanic rocks depleted in sodium and enriched in potassium, with 62.42%～78.02% w(SiO2), 7.66%～9.13% w(K2O+Na2O), 1.18～2.62 w(K2O)/w(Na2O), and Rittmann index δ of 1.67～3.78. They are enriched in LREE with an average LREE/HREE ratio of 10.94×10-6, and generally depleted Eu with an minimum δEu less than 0.31 especially in the ignimbrite and biotite granite, which have experienced a significant process of separation and crystallization of plagioclases.ΣREE at the main stage of the magmatic activity decreases with time.

地球化学特征显示矿区火山——侵入岩属于贫钠富钾的S型花岗岩，其w(SiO2)值为62.42%～78.02%、w(K2O +Na2O)值为7.66%～9.13%、w(K2O)/w(Na2O)比值为1.18～2.62、里特曼指数δ为1.67～3.78；矿区岩石LREE/HREE比值平均为10.94×10-6，属于轻稀土富集型；Eu普遍亏损，特别是熔结凝灰岩、黑云母花岗岩δEu＜0.31，表明经历了显著的斜长石的分离结晶作用；自早至晚主阶段岩浆活动稀土总量逐渐降低。

It is determined that age of the representative rock bodies of volcanic-intrusive complex by dating of 〓Ar/〓Ar isotope, Confirmed that island-arc magmatic activity in this area starting from Early Triassic and ending to Later Triassic, forming three magmatic rock belts arranging from west to east, namely, the three magmatic rock belts corresponding to Xuejiping cycle in Early-Middle Triassic, Wangluo cycle and Disuga cycle in Later Triassic respectively.

用〓Ar/〓Ar同位素年龄确定了中甸地区的火山—侵入杂岩代表性岩体雪鸡坪岩体、朗都岩体和亚杂岩体的年龄，证实本区岛弧岩浆活动从早三叠世已经开始，至晚三叠世结束，形成了从西到东的排列的三个岩浆岩带。即早—中三叠世的雪鸡坪旋回、晚三叠世的王洛旋回和地苏嘎旋回所对应的岩浆岩带。

Although the North China rift basin is a Meso-Cenozoic tectonically active area, its activity is weaker than that of younger volcanic arcs or zones with violent tectonic movement.

这也许正是根据现今应县-商河剖面上大地电磁的探测结果看不出来存在通常所说的反映&软流圈&电性特征的&上地幔高导层&的原因。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。