A recalibration of the garnet-olivine geothermometer and a new geobarometer for garnet peridotites and garnet-olivine-plagioclase-bearing granulites
文献类型：期刊论文
| 作者 | Wu, C. M.; Zhao, G. C. |
| 刊名 | Journal of metamorphic geology
 |
| 出版日期 | 2007-06-01 |
| 卷号 | 25期号:5页码:497-505 |
| 关键词 | Application Calibration Garnet Geobarometer Geothermometer Olivine Plagioclase Assemblage |
| ISSN号 | 0263-4929 |
| DOI | 10.1111/j.1525-1314.2007.00706.x |
| 通讯作者 | Wu, c. m.(wucm@gucas.ac.cn) |
| 英文摘要 | The garnet-olivine fe-mg exchange geothermometer and the garnet-olivine-plagioclase geobarometer have been simultaneously calibrated using reversed experimental data based on the model reactions 3fe(2)sio(4) + 2mg(3)al(2)si(3)o(12) = 3mg(2)sio(4) + 2fe(3)al(2)si(3)o(12) and 3fe(2)sio(4) + 3caal(2)si(2)o(8) = 2fe(3)al(2)si(3)o(12) + ca3al2si3o12 between 900 and 1500 degrees c at 9.1-95.0 kbar and between 4.7 and 7.0 kbar at 750-1050 degrees c, respectively. the resulting garnet-olivine thermometer reproduces experimental temperatures mostly within 75 degrees c and the garnet-olivine-plagioclase barometer reproduces experimental pressures well within +/- 0.19 kbar. these new thermobarometers use the same garnet and olivine activity models and are thermodynamically consistent. application of these thermobarometers to garnet peridotites from mantle xenoliths, orogenic garnet peridotites over the world and the adirondack olivine-bearing metagabbros yielded reasonable p t results. the present garnet-olivine thermometer can be used to measure medium-high-grade to ultrahigh-grade, low-pressure to ultrahigh-high-pressure garnet peridotites and metagabbros, whereas the garnet-olivine-plagioclase barometer has limited application to garnet-olivine-plagioclase-bearing granulites. |
| WOS关键词 | WESTERN GNEISS REGION ; MIXING PROPERTIES ; ORTHO-PYROXENE ; UPPER-MANTLE ; NEW-YORK ; PRESSURE METAMORPHISM ; LITHOSPHERIC MANTLE ; 4-PHASE LHERZOLITES ; BOHEMIAN MASSIF ; CENTRAL ALPS |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000247345900001 |
| 出版者 | BLACKWELL PUBLISHING |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2380411 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wu, C. M. |
| 作者单位 | 1.Grad Univ, Chinese Acad Sci, Coll Earth Sci, 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, C. M.,Zhao, G. C.. A recalibration of the garnet-olivine geothermometer and a new geobarometer for garnet peridotites and garnet-olivine-plagioclase-bearing granulites[J]. Journal of metamorphic geology,2007,25(5):497-505. |
| APA | Wu, C. M.,&Zhao, G. C..(2007).A recalibration of the garnet-olivine geothermometer and a new geobarometer for garnet peridotites and garnet-olivine-plagioclase-bearing granulites.Journal of metamorphic geology,25(5),497-505. |
| MLA | Wu, C. M.,et al."A recalibration of the garnet-olivine geothermometer and a new geobarometer for garnet peridotites and garnet-olivine-plagioclase-bearing granulites".Journal of metamorphic geology 25.5(2007):497-505. |
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来源：中国科学院大学
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