1) metamorphic mafite-ultramafite
变质镁铁-超镁铁质岩
2) 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。
3) mafic ultramafic rocks
超镁铁镁铁质岩
4) metamorphic mafic-ultramafic rock
变质镁铁-超镁铁岩
1.
Based on the analysis of different dating methods of isotopic system and the dating results of the metumorphic mafic-ultramafic rocks in Shunchang, Northern Fujian, it's proposed in the paper that the U-Pb method of single zircon and the method of the whole-rock Sm-Nd isochronic age should be taken as the main ways for dating metamorphic mafic-ultramafic rocks in the orogenic belts.
通过对不同同位素体系测年方法的分析，并结合闽北顺昌镁铁－超镁铁杂岩的系统同位素年代测定结果，提出造山带中变质镁铁－超镁铁岩的年代测定应以颗粒锆石Ｕ－Ｐｂ法和全岩Ｓｍ－Ｎｄ等时线法为主，对Ｒｂ－Ｓｒ、４０Ａｒ－３９Ａｒ和Ｋ－Ａｒ同位素测年结果的应用应持慎重态度。
5) meta_ultramafic rock
变质超镁铁岩
6) ultramafic rock
超镁铁质岩
1.
Abundances of REE in ultramafic rocks from Dalabute ophiolite are determined by preconcentration neutron activation analysis,contents of transition metal elements(TME) in them are measured by instrument neutron activation analysis.
用预浓集中子活化法测定了达拉布特蛇绿岩中超镁铁质岩中的稀土元素(REE),用仪器中子活化法测定了其中的过渡金属元素。
2.
According to a great amount of information on the magnesite deposit and long-term working experience in the study area, the author proposed that the origin of the magnesite deposit might have related to ultramafic rock.
在查阅大量的有关菱镁矿床成因的资料后,结合本人在该矿区长期工作所积累的经验,提出该菱镁矿的成因可能与超镁铁质岩有关。
3.
The spatial distribution of the Archean ultramafic rocks of Xiongershan area shows the characteristics of uneven zoning and various orientations with peridotite, pyroxinite, amphibolite as main rock types, altered strongly.
熊耳山地区太古宙超镁铁质岩在空间分布上具有不均一性、成带性和多方向性特征 ,岩石以橄榄岩、辉石岩、角闪石岩为主 ,蚀变强烈。
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。 |
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参考词条