Recalibration of the garnet-muscovite (gm) geothermometer and the garnet-muscovite-plagioclase-quartz (gmpq) geobarometer for metapelitic assemblages
文献类型：期刊论文
| 作者 | Wu, Chun-Ming; Zhao, Guochun |
| 刊名 | Journal of petrology
 |
| 出版日期 | 2006-12-01 |
| 卷号 | 47期号:12页码:2357-2368 |
| 关键词 | Application Calibration Geobarometer Geothermometer Metapelite |
| ISSN号 | 0022-3530 |
| DOI | 10.1093/petrology/egl047 |
| 通讯作者 | Wu, chun-ming(wucm@gucas.ac.cn) |
| 英文摘要 | The garnet-muscovite (gm) geothermometer and the garnet-muscovite-plagioclase-quartz (gmpq) geobarometer have been simultaneously calibrated under conditions of t = 450-760 degrees c and p = 0.8-11.1 kbar, using a large number of metapelitic samples in the compositional ranges x-fe(grt) = 0.53-0.81 x-mg(grt) = 0.05-0.24, = 0.03-0.23 in garnet, x-ca(pl) = 0.17-0.74 in plagioclase, and fe = 0.04-0.16, mg = 0.04-0.13, al-vi = 1.74-1.96 in muscovite on the basis of 11 oxygens. the resulting gm thermometer yielded similar temperature estimates (mostly within +/- 50 degrees c) to that of the garnet-biolite thermometer, and successfully discerned the expected systematic temperature change of prograde sequences, thermal contact zones and an inverted metamorphic zone. the resulting gmpq barometer yielded similar pressure estimates (mostly within +/ -1.0 kbar) to the garnet-aluminum silicate-plagioclase-quartz (gasp) barometer and placed the aluminosilicate-bearing samples in the appropriate aluminosilicate stability fields. application of the gmpq barometer to thermal contact aureoles or rocks within limited geographical areas confirmed the expected constant pressures that should exist in these settings. the random errors of the gm thermometer and the gmpq barometer are estimated to be +/- 16 degrees c and +/- 1.5 kbar, respectively. when biotite or aluminosilicate is absent in metapelites, metamorphic p-t conditions may be determined by simultaneously applying the gm thermometer and the gmpq barometer. |
| WOS关键词 | CENTRAL MENDERES MASSIF ; HIGH-GRADE METAPELITES ; HIGH-PRESSURE ; BIOTITE ; PHENGITE ; GEOTHERMOBAROMETRY ; METAMORPHISM ; CONSTRAINTS ; THERMOMETRY ; CALIBRATION |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000242771300004 |
| 出版者 | OXFORD UNIV PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2379435 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wu, Chun-Ming |
| 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, Chun-Ming,Zhao, Guochun. Recalibration of the garnet-muscovite (gm) geothermometer and the garnet-muscovite-plagioclase-quartz (gmpq) geobarometer for metapelitic assemblages[J]. Journal of petrology,2006,47(12):2357-2368. |
| APA | Wu, Chun-Ming,&Zhao, Guochun.(2006).Recalibration of the garnet-muscovite (gm) geothermometer and the garnet-muscovite-plagioclase-quartz (gmpq) geobarometer for metapelitic assemblages.Journal of petrology,47(12),2357-2368. |
| MLA | Wu, Chun-Ming,et al."Recalibration of the garnet-muscovite (gm) geothermometer and the garnet-muscovite-plagioclase-quartz (gmpq) geobarometer for metapelitic assemblages".Journal of petrology 47.12(2006):2357-2368. |
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来源：中国科学院大学
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