GYIG OpenIR  > 地球内部物质高温高压实验室  > 期刊论文
A new model for the granite-pegmatite genetic relationships in the Kaluan-Azubai-Qiongkuer pegmatite-related ore fields, the Chinese Altay
Xin Zhang; Hui Zhang; Zhan-Long Ma; Yong Tang; Zheng-Hang Lv; Jing-Yu Zhao; Yun-Long Liu
2016
发表期刊Journal of Asian Earth Sciences
卷号124期号:1页码:139-155
摘要Pegmatites commonly form in the waning stage of magma evolution by fractional crystallization of volatile-rich magmas and may be important host rocks of strategic metals (e.g., Li, Be, Cs, Ta, and Nb) and high-quality gem minerals. This study reports new zircon U-Pb dating results and Hf isotopic compositions of the KLA803 pegmatite, the AZB-01 pegmatite, the JMK-09 pegmatite (abbreviated as the K-A-J pegmatites) and the Halong granite from the Chinese Altay to determine the potential petrogenetic relationships between them. The geochronological data document that the K-A-J pegmatites were emplaced at 224.6 +/- 2.3 Ma, 191.6 +/- 2.0 Ma and 192.0 +/- 2.3 Ma, respectively, and they are characterized by negative to low positive epsilon Hf(t) values (from -1.0 to +63) and old model ages (T-DM) (with the T-DM1 from 874 to 597 Ma and T-DM2 from 1298 to 833 Ma). In contrast, the Halong granite has an emplacement age of 398.3 +/- 2.4 Ma and is characterized by higher positive epsilon Hf(t) values (from +9.9 to +15.2) and younger model ages (T-DM) (with the T-DM1 from 626 to 414 Ma and T-DM2 from 760 to 423 Ma). They all have intruded into the Kulumuti group stratum, which has negative initial epsilon Nd(t) values (from -4.3 to -0.2) and old T-DM model ages (between 1.22 and 1.56 Ga). Based on the calculated results of the mixing ratios (f) of the initial magmas and the prevailing Paleozoic tectonic framework of the Chinese Altay, we establish two petrogenetic models for the K-A-J pegmatites: Model 1 refers to that these pegmatites originated from a mixed magma that was composed of 72-91 wt.% depleted mantle components and 9-28 wt.% lower crust components; and Model 2 refers to that they were derived from the partial melting of 38-83 wt.% Halong granite and 17-62 wt.% sedimentary rocks from the Kulumuti group. We also suggest that the initial magma of the Halong granite was significantly contributed by juvenile materials with a slight involvement of crustal materials. In Model 1, because LCT-type pegmatites (classified as Li-Cs-Ta enriched pegmatites associated with S-type granite that was produced by the partial melting of preexisting sedimentary rocks) have close geochemical affinities with crustal materials, the excessively high weight percentages (72-91 wt.%) of the depleted mantle components in the initial magma of the K-A J pegmatites indicate that this model is unrealistic. Therefore, we consider that Model 2 is more reasonable at present for interpreting the petrogenesis of the K-A-J pegmatites, and it needs to be verified in other pegmatite fields of the Chinese Altay.
学科领域地球深部物质与流体作用地球化学
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/352002/6218
专题地球内部物质高温高压实验室_地球内部物质高温高压实验室_期刊论文
推荐引用方式
GB/T 7714
Xin Zhang,Hui Zhang,Zhan-Long Ma,et al. A new model for the granite-pegmatite genetic relationships in the Kaluan-Azubai-Qiongkuer pegmatite-related ore fields, the Chinese Altay[J]. Journal of Asian Earth Sciences,2016,124(1):139-155.
APA Xin Zhang.,Hui Zhang.,Zhan-Long Ma.,Yong Tang.,Zheng-Hang Lv.,...&Yun-Long Liu.(2016).A new model for the granite-pegmatite genetic relationships in the Kaluan-Azubai-Qiongkuer pegmatite-related ore fields, the Chinese Altay.Journal of Asian Earth Sciences,124(1),139-155.
MLA Xin Zhang,et al."A new model for the granite-pegmatite genetic relationships in the Kaluan-Azubai-Qiongkuer pegmatite-related ore fields, the Chinese Altay".Journal of Asian Earth Sciences 124.1(2016):139-155.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
A new model for the (5435KB) 开放获取使用许可浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Xin Zhang]的文章
[Hui Zhang]的文章
[Zhan-Long Ma]的文章
百度学术
百度学术中相似的文章
[Xin Zhang]的文章
[Hui Zhang]的文章
[Zhan-Long Ma]的文章
必应学术
必应学术中相似的文章
[Xin Zhang]的文章
[Hui Zhang]的文章
[Zhan-Long Ma]的文章
相关权益政策
暂无数据
收藏/分享
文件名: A new model for the granite–pegmatite genetic relationships in the Kaluan.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。