1) mafic ultramafic cumulate xenoliths
镁铁质超镁铁质堆晶岩捕虏体
2) xenolithic ultramafic rock
超镁铁岩捕虏体
1.
Based on a study of major and trace elements, and isotopic composition of the xenolithic ultramafic rocks carried by the Cenozoic volcanism, characteristics and spatial variations of the lithospheric mantle of the northern South China Sea and the surrounding areas have been discussed in this paper.
对新生代火山活动携带到地表的超镁铁岩捕虏体岩石的主元素、微量元素和同位素特征的研究表明,南海北部及邻区岩石圈地幔组成和空间变化与大地构造分区有密切联系;区域上的岩石圈地幔经历过多重地幔交代作用,而与南海北部陆缘活化和陆缘扩张更为密切相关的地幔交代作用可能主要为高温型富Fe-Ti交代作用;软流圈热物质上升是引起大陆地壳活化的重要的深部作用因素。
3) Mafic ultramafic cumulate
镁铁-超镁铁质堆晶岩
4) mafic and ultramafic intrusion
镁铁质-超镁铁质岩体
1.
There are about 50 mafic and ultramafic intrusions in this area.
在区内已发现的镁铁质-超镁铁质岩体中,有的含有铜镍矿床或铜镍矿化,有的则不含矿。
5) mafic-ultramafic rocks
镁铁-超镁铁质岩
1.
Geochemical characteristics of mafic-ultramafic rocks and their geological significance in Hongqiling mine of Jilin;
吉林红旗岭镁铁-超镁铁质岩的地球化学特征及地质意义
2.
Both copper-nickel sulfide (CNS) deposit and vanadic titianomagnetite (VTM) deposit are related to mafic-ultramafic rocks and belong to the orthomagmatic mineral deposit, but they rarely coexist on one deposit.
铜镍硫化物矿床与钒钛磁铁矿矿床虽然同属与镁铁-超镁铁质岩有关的岩浆型矿床范畴,但在一般情况下,二者是不共生的。
3.
Cu-Ni sulphide deposit related to mafic-ultramafic rocks is the main type of copper, nickel,platinum group elements(PGE) deposits.
与镁铁-超镁铁质岩密切相关的铜镍硫化物矿床是铜、镍、铂族元素(PGE)资源的重要矿床类型。
6) mafic ultramafic rocks
超镁铁镁铁质岩
补充资料:铁质岩
铁质岩 ferruginous rock 一种富铁矿物的沉积岩。主要由赤铁矿、针铁矿、菱铁矿、磁铁矿、铁质绿泥石、黄铁矿等铁矿物和粘土、硅质、砂质等杂质组成。多呈黑色或灰色,具鲕状、豆状、肾状和结核状结构。按矿物成分可分为硫化铁质岩(主要矿物为黄铁矿、白铁矿等)、碳酸铁质岩(主要矿物为菱铁矿等)、氧化铁质岩(主要矿物为赤铁矿、褐铁矿等)和硅酸铁质岩(主要矿物为鲕绿泥石等)。铁含量达工业品位,且具一定储量规模,则构成铁矿床。中国铁质岩矿床形成于各个地质时期,如前寒武纪的鞍山式铁矿,古生代的宁乡式铁矿、山西式铁矿,中生代的淮南式铁矿等。 |
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条