查询词典 xenocrysts

Volcanic rocks contain plenty of mantle-derived xenoliths, including spinel lherzolites with subordinate wehrlite, dunite, olivine websterite, clinopyroxenite and garnet lherzolite , and few olivine, clinopyroxene and spinel xenocrysts.

火山岩中含有的地幔捕虏体类型主要有：尖晶石二辉橄榄岩、石榴石二辉橄榄岩、纯橄岩、异剥橄榄岩和单斜辉石岩；捕虏晶主要有橄榄石、单斜辉石和尖晶石。

There are two kind of zicons in amphibolite from the Haiyangsuo area,eastern Shandong Province:(1)Xenocrysts,they give 207Pb/208Pb age of 2149Ma,which suggests an early proterozoic basement in this area;(2)Magmatic euhedral zircons,they give an upper intercept age of 1784±11Ma and lower intercept age of 448±13Ma.

中文摘要：胶东海阳所胶南群斜长角闪岩中的锆石有2类：（1）捕掳晶锆石，它给出2149Ma 的207Pb/206Pb 年龄，证明该区存在有早元古基底；（2）岩浆结晶锆石，它的不一致线上下交点年龄分别为1784±11Ma和448±13Ma。

Heat flows derived from garnet, chromite/chromium-spinel and pyroxene of xenoliths, xenocrysts in Mengyin and Fuxian kimberlites are higher than 40mW/m〓 calculated from the pyroxene inclusions in diamonds, and the range of pressure is 20～40kb (equivalent to 65～130km). Metasomatism (as indicated by yimengite and lindsleyite in Mengyin) is very strong in this depth range. Lherzolite, wehrlite, and diamond-free high-Ca harzburigite around the world are derived from this depth also. The observation suggests that the low-Ca harzburigitic environment for diamond stability had been changed significantly when the kimberlitic magmas erupted. This resulted from fluid interaction with harzburigite. The geotherm of the Cenozoic lithospheric mantle beneath Eastern-North China platform is higher than oceanic one. The temperature from the interior of the Tan-Lu faults is higher than that from apart off the fault.

除金刚石中的辉石温压投点落于40m W/m〓占地温线上外，捕虏体及捕虏晶中石榴石，铬尖晶石及单斜辉石的投点均偏离该地温线，显示较高的地温特点，而且捕虏体及捕虏晶的压力范围多在20-40kb(相当于65-130km)间，该深度范围内地幔的交代作用特别发育，如蒙阴大量发育的沂蒙矿、钛钾铬石等就发育于该深度范围，世界范围内不含金刚石的高钙方辉橄榄岩、二辉橄榄岩、异剥橄榄岩也分布于该区中，一方面表明捕虏体的主要取样位置已不在金刚石稳定区中，另一方面也表明金刚石稳定的橄榄岩环境，在金伯利岩侵位并捕虏他们时已发现了明显的改造，这种改造作用主要是通过长期的熔流体与先存的橄榄岩相互作用的结果。

Mafic, ultramafic and/or alkaline volcanic rocks and their entrained mantle peridotitic xenoliths and xenocrysts are known as samples directly from the lithospheric mantle.

基性、超基性火山岩捕获的地幔橄榄岩捕虏体和捕虏晶是直接源自岩石圈地幔的样品。

These suggest that the xenocrysts were captured by the enclave magma from the host magma. On diagram of total alkali vs. SiO〓(Middlemost, 1994), most samples of the host rocks plot within the area of diorite, the samples of the quenched margin plot within the area of gabbro-diorite and the samples of the enclave plot within the area of diorite.

在Middlemost(1944)提出的侵入岩全碱-SiO〓分类图解中，寄主岩的投影点落在花岗闪长岩范围内，淬冷边的投影点落在辉长闪长岩范围内，而包体的投影点大都落在闪长岩区。

All these characteristics suggest that the perlitic rocks might have originated from upper crust, and their pyroxene xenocrysts may be the results of assimilation and contamination of wall rocks during the migration and ascent of magma.

这些特征表明，珍珠岩原岩可能来自于上部地壳，其辉石等捕虏晶为岩浆上侵运移过程与围岩发生混染作用的结果。

Potassium feldspar and plagioclase xenocrysts are seen within these enclaves and the boundary between the host rock and the enclaves. These xenocrysts are trapped from the host magma by the enclave magma and are frequently resorbed into a round and sieve shape.

在包体内部或包体与寄主岩的边界均见有钾长石及斜长石捕虏晶，这种捕虏晶是包体岩浆从寄主岩岩浆中捕获的，常被熔蚀成筛状或浑圆状。

In this study thehelium isotope composition of the mantle xenoliths and xenocrysts were systemically determinedfirst time.

发现不同地区，及同一地区不同幔源包体和高压巨晶的氦同位素组成明显不同。

Therewere many mantle lherzolites xenoliths and huge xenocrysts in these basalts.

我们首次对这些幔源包体和高压巨晶的氦同位素组成进行了系统的研究。

The ~3He/~4He ratios of xenoliths and xenocrysts from most area weresimilar to those of MORB, implicating that these mantle xenoliths and xenocrysts were fromdepleted MORB mantle source.

大部分地区幔源包体和高压巨晶的~3He／~4He比值与MORB值相似，暗示这些幔源包体和高压巨晶可能主要来自MORB型亏损地幔源区。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。