1) mantle xenolith
地幔岩
1.
REE in fluidmelt inclusions of mantle xenolith from Changbaishan are measured directly by ICPMS.
当前对地幔流体的REE研究,主要是通过对比富CO2包裹体与贫CO2包裹体的地幔岩或地幔矿物的测试分析来间接获得信息。
2.
Mantle xenoliths captured in alkali basalt occurs widely in the Liuhe district, Jiangsu province, China, dominantly by spinel lherzolite.
这说明同一地区地幔岩中裂隙硫化物和硫化物包裹体的成分存在某种继承关系 ,其硫化物成分与该地区地幔橄榄岩的来源深度 (或经历部分熔融时的深度 )有一定联
3.
The discovery of sulfide-melt inclusions in mantle xenoliths is of great significance in further understanding mantle depletion and enrichment, as well as ore-forming processes of mantle fluids.
浙江新昌一带晚第三纪碱性玄武岩中地幔岩(二辉橄榄岩)捕虏体内存在大量硫化物熔体包裹体。
2) upper mantle rock
上地幔岩
1.
In the former province, the upper mantle rocks consist of harzburgite and lherzolite, characterized by the concentration of mantle type elements (K T) and the smooth-weak enrichment type REE patterns; the ocean volcanic rocks are dominated by basic rocks of subalkaline and oceanic ridge type; lead isotopes are noted for 206Pb/ 204Pb<18.
前者上地幔岩有方辉橄榄岩和二辉橄榄岩 ,幔型元素 (KT)富集 ,REE呈平坦—弱富集型 ;大洋火山岩以基性岩、亚碱性、洋脊型为主 ;铅同位素2 0 6 Pb/2 0 4 Pb <18。
4) mantle source rock
地幔源岩
5) lithospheric mantle
岩石圈地幔
1.
Peridotite-melt interaction:an important mechanism for the compositional transformation of lithospheric mantle;
橄榄岩-熔体的相互作用:岩石圈地幔组成转变的重要方式
2.
Geochemistry of Late Mesozoic basalts from Kedoushan in the Middle and Lower Yangtze regions:Constraints on characteristics and evolution of the lithospheric mantle;
长江中下游地区蝌蚪山晚中生代玄武岩的地球化学研究:岩石圈地幔性质与演化的制约
3.
The high ratio of La/Nb values (>1) and negative Nb anomalies on the primitive mantle-normalized trace element patterns characterize the contamination of lithospheric mantle or crustal materials.
其低的δ18O值(<6‰)说明没有地壳物质的混染,其高的La/Nb比值(>1)和微量元素原始地幔标准化图解出现的负Nb异常则表明源区有岩石圈地幔物质的混染。
6) mantle-derived xenoliths
地幔岩包体
1.
The gold content of 91 samples of mantle-derived xenoliths and their host basalts from eastern China were analyzed, and some significant phenomena were discovered.
笔者等分析了中国东部 91件地幔岩包体及其寄主玄武岩中的金含量并有重要发现。
2.
Molybdenum content of 80 samples of mantle-derived xenoliths and th eir host rocks from southern margin of North China craton (Linqu,Changle,Jiaoz hou of Shandong Province and Mingguang of Anhui Province) and South China block (Niutoushan of Fujian Province,Yingfengling of Guangdong Province,Ding an and Penglai of Hainan Province) in eastern China was analyzed.
对中国东部华北克拉通南缘(山东临朐、昌乐、胶州和安徽明光)和华南地块(福建牛头山、广东英峰岭、海南定安和海南蓬莱)80件地幔岩包体及其寄主玄武岩石中的钼含量进行了分析。
补充资料：地幔岩
一种对原始地幔物质假想的岩石名称。D.H.格林和A.E.林伍德认为上地幔物质经部分熔融能产生少量玄武岩浆和大量剩下造山带阿尔卑斯型橄榄岩，设想橄榄岩和玄武岩按3:1～4:1的比例混合，即可得到原来地幔的化学组成，并计算其矿物组成为辉石、橄榄石和镁铝榴石。地幔岩的代表性模型是由3份阿尔卑斯型橄榄岩（橄榄石79％、斜方辉石20％和尖晶石1％）和1份夏威夷拉斑玄武岩组成的。得出的模型成分:SiO2为45.16％,TiO2为0.71％，AI2O3为3.54％，Fe2O3为0.46％,FeO为8.04％，MnO为 0.14％，MgO为 37.47％，CaO为3.08％，Na2O为0.51％,K2O为0.13％,P2O5为0.06％,Cr2O3为0.43％,NiO2为 0.20％，Fe2+/Mg+ Fe2+为0.10。地幔岩的成分随计算所用的橄榄岩和玄武岩的化学组成的不同及其混合的比值大小有所不同。还有,地球上现在见到的玄武岩能否代表原生岩浆仍有疑问，例如夏威夷拉斑玄武岩富含TiO2，据此计算的模型成分将有误差。
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