查询词典 lavas

There is a long standing debate about the magma origin of Lutao. Two different models of crust contamination and source contamination are proposed. Combining helium results with strontium ratios of Lutao lavas, it shows that Lutao arc magma has experienced approximately 5% of crust contamination.

绿岛岩浆成因长久以来存在有地壳混染或是源区混染的争论，本研究利用绿岛斜辉石及堇青石巨晶的3He/4He比值及其母岩浆的87Sr/86Sr比值，得到了绿岛岩浆经历过5%左右地壳混染的结果。

Kalamaili suture zone is an important plate boundary in north Xinjiang, and there are plenty of Neopaleozoic volcanic rocks around itThese volcanic rocks are enriched in LILEs and relatively depleted in HFSEs, and they are also characterized by high Nb, Zr, TiO2 contents and Zr/Y, Nb/Y ratios, and depleted SrNd isotopesThe characteristics of these volcanic rocks suggest that they were produced in postcollisional periodThe postcollisional volcanic rocks around Kalamaili suture zone become younger from west to east, which indicates that this suture zone entered postcollisional period gradually from west to east, and reflects that the Kalamaili Ocean had been closed gradually from west to eastAs to the Kalamaili suture zone in postcollisional period, the lithosphere extended and thinned, and the asthenosphere materials upwelled and melted partially, and intensive mantle convection occurred, leading to a plenty of mantlederived magmas underplating the suture zoneThe lithospheric mantle metasomatized by fluid in subduction period melted partially under decompression and high temperature, the resulting melts contaminated the underplating asthenospheric materials, and the erupted lavas became the Neopaleozoic postcollisional volcanic rocks

卡拉麦里缝合带是北疆的一条重要界线，沿该带广泛发育晚古生代火山岩。这些火山岩具有LILE相对富集、HFSE相对亏损的特征，且具有较高的Nb、Zr、TiO2含量和Zr/Y、Nb/Y比值，SrNd同位素主要表现出亏损的特征。综合分析表明，这些火山岩形成于后碰撞期。对卡拉麦里缝合带而言，从西向东后碰撞火山岩的时代逐渐变新，表明该缝合带从西向东逐渐演化进入后碰撞期，这从侧面反映了卡拉麦里洋盆是从西向东逐渐关闭的。对卡拉麦里缝合带而言，在后碰撞期，岩石圈伸展减薄，软流圈地幔物质上涌并发生部分熔融，加上地幔对流作用强烈，使得缝合带下产生了大规模的幔源岩浆底垫；先前在洋壳消减期被流体交代提取过的岩石圈地幔也在低压高温下发生部分熔融，形成的熔体混染了底垫的软流圈物质并喷发，形成了晚古生代的后碰撞期火山岩。

An ophiolitic melange belt is discontinuously exposed in Harihada- Chegendalai area to the south of Tuilamamiao in NE of Damaoqi. The ophiolitic mélange in the belt are mainly composed of metamorphic peridotites, metamorphic gabbros, metamorphic basic lavas and high-Mg diorites.

在达茂旗东北推喇嘛庙南15km的哈日哈达-车根达来地区，断续出露一套由变质橄榄岩、变质辉长岩、变质基性熔岩以及高镁闪长岩组成的蛇绿混杂岩。

There are a lot of Cenozoic potassic and ultrapotassic lavas in the northern Qinghai-Tibet Plateau, their existing is an enigma.

青藏高原北部发育的大量新生代钾质、高钾质火山岩体的成因一直是个谜。

Cenozoic potassic and ultrapotassic lavas in the north Tibet are the direct result of northward subducting of ILM.

因此，青藏高原北部新生代火山岩可能是印度岩石圈地幔持续北向俯冲的结果。

In addition, significant 230Th enrichments disprove the possibility of recent (50 ka) fluid addition from subducted Pacific sediments as a mechanism to generate the Holocene lavas in NE China.

同时表明，近期（50 ka）来自俯冲的太平洋沉积物的流体对中国东北全新世火山岩的产生是一种重要机制。

It may indicate that the Martian mantle is wetter than Earth's or that younger lavas melted at different temperatures or pressures than the older basalts.

或许代表火星的地函比地球的更潮湿，或是较年轻的熔岩与较古老的玄武岩是各在不同的温度或压力下熔化。

Pyrometers, radiometers, bolometers are used for determining heat radiation and have applications for measuring the surface temperature of hot lavas.

高温计、辐射计、辐射热测量仪用来测定热辐射和热岩熔的表面温度。

The caldera wall sequences are up to 0.6km thick and consist of lavas with 51-69 percent SiO2 and 0.2-5 percent MgO as well as breccias, dikes, sills, domes and minor ignimbrites.

火山口壁序列均达到0.6公里厚的熔岩组成，SiO2和0.2-5 51-69百分之百分之氧化镁以及角砾岩，堤防，窗台，圆顶和次要ignimbrites。

A light glass formed on the surface of some lavas; used as an abrasive.

一种轻质玻璃，形成于一些熔岩的表面，用作研磨剂。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。