GYIG OpenIR  > 地球内部物质高温高压实验室
Crystal size distribution of amphibole grown from hydrous basaltic melt at 0.6–2.6 GPa and 860–970 °C
Bo Zhang;   Xianxu Hu;   Paul D. Asimow;   Xin Zhang;   Jingui Xu;   Dawei Fan;   Wenge Zhou
2019
发表期刊merican Mineralogist
卷号104期号:4页码:525-535
摘要

We carried out three series of amphibole crystallization experiments from hydrous basaltic melt to calibrate the dependence of crystal growth rate on temperature and pressure in amphibole-bearing igneous rocks. One series of 100 h duration multi-anvil experiments were carried out at a constant pressure of 0.6 GPa and variable temperatures from 860 to 970 °C. The second series was conducted at a constant temperature of 970 °C and variable pressures from 0.6 to 2.6 GPa. The third series examined the time dependence at 970 °C and 0.6 GPa, with durations from 1 to 100 h. A verification experiment showing both reproducibility and the ability of these three series to predict behavior at novel conditions was performed in a piston cylinder at 1.0 GPa and 900 °C for 63 h. All experiments yielded mostly amphibole in a quenched glass of granitic to granodioritic composition. We used the two-dimensional thin section method to measure the crystal size distribution (CSD) of amphibole in the experimental products. Concave-down CSD curves at small sizes indicate a textural coarsening process during the crystallization. The CSD data were inverted using canonical CSD theory for CSD growth rate; maximum and average growth rates of amphibole were also inferred directly from the maximum and average grain size and crystallization time. The maximum growth rate is, of course, always larger than the average growth rate, which is in turn slightly larger than the CSD growth rate, suggesting that CSD growth rate is an adequate measure of the average growth rate of a mineral in magmatic rocks. The CSD growth rate increases with increasing temperature in the isobaric series and with increasing pressure at constant temperature. However, the growth rate is negatively correlated with crystallization time at constant temperature and pressure. Based on the experimental results, a functional form for evaluating growth rate at known pressure and temperature from an observed amphibole CSD was developed and applied to a diorite collected from the eastern Tianshan Mountains, Xinjiang Uygur autonomous region, NW China. The estimated growth rate of amphibole is between 1.6 × 10–9 mm/s and 5.6 × 10–7 mm/s, and combined with petrological constraints on pressure and temperature, the corresponding crystallization time was between 0.1 and 4.3 yr in the natural diorite.

关键词Amphibole Basalt High temperature–High Pressure Crystal-size Distribution Growth Rate Crystallization Time
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/42920512-1/10435
专题地球内部物质高温高压实验室
作者单位1.Key Laboratory for High Temperature and High Pressure Study of the Earth’s Interior of Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Division of Geological and Planetary Sciences, California Institute of Technology, Mail Code 170-25, Pasadena, California 91125, U.S.A
4.Guizhou University of Finance and Economics, Guiyang 550025, China
推荐引用方式
GB/T 7714
Bo Zhang; Xianxu Hu; Paul D. Asimow; Xin Zhang; Jingui Xu; Dawei Fan; Wenge Zhou. Crystal size distribution of amphibole grown from hydrous basaltic melt at 0.6–2.6 GPa and 860–970 °C[J]. merican Mineralogist,2019,104(4):525-535.
APA Bo Zhang; Xianxu Hu; Paul D. Asimow; Xin Zhang; Jingui Xu; Dawei Fan; Wenge Zhou.(2019).Crystal size distribution of amphibole grown from hydrous basaltic melt at 0.6–2.6 GPa and 860–970 °C.merican Mineralogist,104(4),525-535.
MLA Bo Zhang; Xianxu Hu; Paul D. Asimow; Xin Zhang; Jingui Xu; Dawei Fan; Wenge Zhou."Crystal size distribution of amphibole grown from hydrous basaltic melt at 0.6–2.6 GPa and 860–970 °C".merican Mineralogist 104.4(2019):525-535.
条目包含的文件
条目无相关文件。
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
[Bo Zhang; Xianxu Hu; Paul D. Asimow; Xin Zhang; Jingui Xu; Dawei Fan; Wenge Zhou]的文章
百度学术
百度学术中相似的文章
[Bo Zhang; Xianxu Hu; Paul D. Asimow; Xin Zhang; Jingui Xu; Dawei Fan; Wenge Zhou]的文章
必应学术
必应学术中相似的文章
[Bo Zhang; Xianxu Hu; Paul D. Asimow; Xin Zhang; Jingui Xu; Dawei Fan; Wenge Zhou]的文章
相关权益政策
暂无数据
收藏/分享
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。