Comparison of global N-MORB and E-MORB classification schemes
文献类型：期刊论文
| 作者 | Di PengFei1,2; Chen WanFeng1; Zhang Qi3; Wang JinRong1; Tang QingYan1; Jiao ShouTao4 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2018 |
| 卷号 | 34期号:2页码:264-+ |
| 关键词 | N-MORB E-MORB Discriminant criteria La/Sm La/Elf La/Zr Big data |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The mid-ocean ridge basalt (MORB) can be generally divided into N-MORB and E-MORB, which have attracted much attention due to their different geodynamics significance. N-MORB and E-MORB are distinguishable from each other based on various classification criteria. The Rb/Nd <= 0.15, K/Ti <= 0.11, (La/Sm)(N) <= 0.8, K2O/TiO2 < 0.09, Delta Nb = 1.74 + lg(Nb/Y)-1.921g (Zr/Y) < 0, (La/Sm)(N) < 1 and 100K(2)O/TiO2 <= 13 of MORB are commonly classified as N-MORB, otherwise E-MORB. So far, less discussion on the applicability of the classification criteria on most MORBs has been conducted. In order to solve this problem, we adopt the data from the global spreading center to compare these seven criteria, and find that the (La/Sm)(N) < 1 is more suitable for identifying the most of the N-MORB. Therefore, 31 elements including La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ba, Cs, Hf, K, Nb, Pb, Rb, Sc, Sr, Ta, Th, Ti, Tl, U, V, Y and Zr of all samples are selected to make 36856 element pairs. The logarithmic ratios of every two elements are used to make a plot and then the confidence elliptic overlap rate of 85% is calculated. According to the principle of minimum overlap rate, it is better to use the correlation of the rare earth elements La, Ce, Pr and Sm, and other high field elements Nb, Zr, Hf and Y to discriminate the N-MORB and E-MORB. Among these elements, the best discrimination is obtained if La as numerator or La/Elf and La/Zr ratios is applied. Therefore, the correlation between the above elements offer a better solution for discriminating N-MORB and E-MORB. |
| WOS关键词 | EAST PACIFIC RISE ; MID-ATLANTIC RIDGE ; MANTLE HETEROGENEITY ; REYKJANES RIDGE ; TRIPLE JUNCTION ; SPREADING RIDGE ; ORIGIN ; GEOCHEMISTRY ; BASALTS ; BENEATH |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000429429000002 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/83182]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Wang JinRong |
| 作者单位 | 1.Lanzhou Univ, Sch Earth Sci, Key Lab Mineral Resources Western China, Lanzhou 730000, Gansu, Peoples R China 2.Gansu Assessment Ctr Mineral Resources Reserves, Lanzhou 730000, Gansu, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 4.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Di PengFei,Chen WanFeng,Zhang Qi,et al. Comparison of global N-MORB and E-MORB classification schemes[J]. ACTA PETROLOGICA SINICA,2018,34(2):264-+. |
| APA | Di PengFei,Chen WanFeng,Zhang Qi,Wang JinRong,Tang QingYan,&Jiao ShouTao.(2018).Comparison of global N-MORB and E-MORB classification schemes.ACTA PETROLOGICA SINICA,34(2),264-+. |
| MLA | Di PengFei,et al."Comparison of global N-MORB and E-MORB classification schemes".ACTA PETROLOGICA SINICA 34.2(2018):264-+. |
入库方式： OAI收割
来源：地质与地球物理研究所
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