The applicability of the grips geobarometry in metapelitic assemblages
文献类型：期刊论文
| 作者 | Wu, CM; Zhao, GC |
| 刊名 | Journal of metamorphic geology
 |
| 出版日期 | 2006-05-01 |
| 卷号 | 24期号:4页码:297-307 |
| 关键词 | Applicability Calibration Geobarometer Grips Metapelite |
| ISSN号 | 0263-4929 |
| DOI | 10.1111/j.1525-1314.2006.00638.x |
| 通讯作者 | Wu, cm(wucm@gucas.ac.cn) |
| 英文摘要 | Although the garnet-rutile-ilmenite-plagioclase-silica (quartz) (grips) geobarometer has been experimentally calibrated and widely applied, its applicability to metapelitic rocks has not yet been discussed carefully. in this paper, this barometer was recalibrated by fitting the available reversed-phase equilibrium data incorporating different combinations of activity models of garnet, plagioclase and ilmenite. the resultant grips barometer formalisms reproduce the experimental pressures well within +/- 0.2 kbar. the grips and garnet-aluminium silicate-plagioclase-quartz (gasp) barometer values are concordant within +/- 1 kbar for pressures above similar to 6 kbar for natural metapelites, but the difference of pressure determinations between these two barometers becomes larger when pressure and/or the grossular content of garnet decrease. however, the pressure difference is independent of either temperature, or almandine in garnet, or anorthite in plagioclase, or iron content in ilmenite. after testing and application of the grips barometer to aluminosilicate-bearing metapelites and metapelitic assemblages within limited geographical areas as well as within contact thermal aureoles, it is concluded that this barometer may be applied to low- to high-grade, medium- to high-pressure metapelites. the application of the grips barometer to metapelites is not advocated in situations where calcium is deficient in garnet (x-ca(grt) < 0.05) or plagioclase (x-ca(pl) < 0.17), or for pressures below similar to 6 kbar. |
| WOS关键词 | CONSISTENT SOLUTION MODELS ; FE-MN EXCHANGE ; GRADE METAPELITES ; MIXING PROPERTIES ; SOLID-SOLUTIONS ; TI OXIDES ; GARNET ; ILMENITE ; SYSTEM ; CA |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000237299500002 |
| 出版者 | BLACKWELL PUBLISHING |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2379652 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wu, CM |
| 作者单位 | 1.Chinese Acad Sci, Grad Sch, Lab Computat Geodynam, Beijing 100049, Peoples R China 2.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, CM,Zhao, GC. The applicability of the grips geobarometry in metapelitic assemblages[J]. Journal of metamorphic geology,2006,24(4):297-307. |
| APA | Wu, CM,&Zhao, GC.(2006).The applicability of the grips geobarometry in metapelitic assemblages.Journal of metamorphic geology,24(4),297-307. |
| MLA | Wu, CM,et al."The applicability of the grips geobarometry in metapelitic assemblages".Journal of metamorphic geology 24.4(2006):297-307. |
入库方式： iSwitch采集
来源：中国科学院大学
浏览0
下载0
收藏0
其他版本
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。