| Citation: | Lu Wang, Zhenmin Jin, Mouchun He. Raman Spectrum Study on Quartz Exsolution in Omphacite of Eclogite and Its Tectonic Significances. Journal of Earth Science, 2003, 14(2): 119-126.
|
The studies on ultra microstructure characteristics of quartz exsolution in eclogite and coesite in UHP eclogite of several localities are done with the appliance of laser Raman spectroscopy and U stage. Research results show that the phase transformation of coesite quartz in garnet and/or omphacite is a continuous process. Topological relationship is present between quartz exsolution in omphacite and its host mineral which shows orientations of two long axes of quartz exsolution parallel to (100) and (-101) of omphacite. At present, some scholars suggest that the quartz exsolution in omphacite of eclogite is the evidence of UHP metamorphism. However, temperature and pressure condition and the exsolution mechanism of oriented needlelike quartz in omphacite still remain unclear. Therefore, further study should be enhanced on experimental research on exsolution mechanism of super silicate clinopyroxene, which could provide experimental quantitative constraint on quartz exsolution as UHP indicator.
| Angel R J, Gasparik T, Ross N L W, et al, 1988. A Silica-Rich Sodium Pyroxene Phase with Six-Coordinated Silicon. Nature, 335: 156-158 doi: 10.1038/335156a0 |
| Bakun-czubarow N, 1992. Quartz Pseudomorphs after Coesite and Quartz Exsolutions in Eclogitic Omphacites of the Zlote Mountains in the Sudetes (SW Poland). Archiwulm Mineralogiczne, 48: 3-25 |
| Boyer H, Smith D C, Chopin C, et al, 1985. Raman Microprobe (RMP) Determinations of Natural and Synthetic Coesite. Phys Chem Minerals, 12: 45-48 |
| Chopin C, 1984. Coesite and Pure Pyrope in High Grade Pelitic Blueschists of the Western Alps First Record and Some Consequences. Contribution to Mineralogy and Petrology, 86: 107-118 doi: 10.1007/BF00381838 |
| Coes L, 1953. A New Dense Crystalline Silica. Science, 118: 131 doi: 10.1126/science.118.3057.131 |
| Cong B L, Wang Q C, 1999. New Progress of the Research in DabieSulu Ultrahigh Pressure Metamorphic Belt. Chinese Science Bulletin, 44(11): 1127-1141 doi: 10.1360/csb1999-44-11-1127 |
| Cong B L, Wang Q C, 2000. New Thinking from the Research of Deep Continental Subduction. Progress in Nature Science, 10(9): 778-782 |
| Dobrzhinetskaya L F, Green H W, Wang S, 1996. Alpe Arami: A Peridotite Massif from Depths of More than300Kilometers. Science, 271: 1841-1845 doi: 10.1126/science.271.5257.1841 |
| Dobrzhinetskaya L F, Schweinehage R, Massonne H J, et al, 2002. Silica Precipitates in Omphacite from Eclogite at Alpe Arami, Switzerland: Evidence of Deep Subduction. Journal of Metamorphic Geology, 20: 481-492 doi: 10.1046/j.1525-1314.2002.00383.x |
| Gayk T, Kleinschrodt R, Langosch A, et al, 1995. Quartz Exsolution in Clinopyroxene of High-Pressure Granulite from the Munchberg Massif. European Journal of Mineralogy, 7: 1221-1225 doi: 10.1127/ejm/7/5/1221 |
| Katayama I, Parkinson C D, Okamoto K, et al, 2000. Supersilicic Clinopyroxene and Silica Exsolution in UHPM Eclogite and Pelitic Gneiss from the Kokchetav Massif, Kazakhstan. American Mineralogist, 85: 1368-1374 doi: 10.2138/am-2000-1004 |
| Khanukhova L T, Zharikov V A, 1976. Excess Silica in Solid Solutions of High-Pressure Clino-pyroxenes as Shown by Experimental Study of the System CaMgSi2O6-CaAl2SiO2 at 35Kilobars and 1 200℃. Doklady Earth Science, 229: 170-172 |
| Liu Y C, Xu S T, Jiang L L, et al, 1999. New Progress of the Research of Mafic and Ultramafic Rock Belt North of Dabie Mountains. Geology of Anhui, 9(4): 262-267 |
| Mao H K, 1971. The System Jadeite (NaAlSi2O6)-Anorthite (CaAl2Si2O8) at High Pressures. Carnegie Institute Year Book, 69: 163-168 |
| Mosenfelder J L, Bohlen S R, 1997. Kinetics of the Coesite to Quartz Transformation. Earth and Planetary Science Letters, 153: 133-147 doi: 10.1016/S0012-821X(97)00159-3 |
| Okay A I, Xu S, Sengor A G, 1989. Coesite from the Dabie-shan Eclogites, Central China. European Journal of Mineralogy, (1): 595-598 |
| Parkinson C D, 2000. Coesite Inclusions and Prograde Compositional Zonation of Garnet in Whiteschist of the HP-UHPM Kokchetav Massif, Kazakhstan: A Record of Progressive UHP Metamorphism. Lithos, 52: 215-233 doi: 10.1016/S0024-4937(99)00092-4 |
| Parkinson C D, Katayama I, 1999. Present -Day Ultrahigh-Pressure Conditions of Coesite Inclusions in Zircon and Garnet: Evidence from Laser Raman Microspectroscopy. Geology, 27: 979-982 |
| Smith D C, 1984. Coesite in Clinopyroxene in Caledonides and Its Implications for Geodynamics. Nature, 310: 641-644 doi: 10.1038/310641a0 |
| Su W, You Z D, Wang R C, et al, 2001. The Exsolution of Clinoenstatite and Quartz in Diopside from Garnet Pyroxenite in Northern Dabie. Chinese Science Bulletin, 46(10): 850-854 doi: 10.1007/BF02900437 |
| Tabata H, Yamauchi K, Maruyama S, et al, 1998. Tracing the Extent of a UHP Metamorphic Terrance: Minera-l Inclusion Study of Zircons in Gneisses from the Dabie-shan. In: Hacker B R, Liou J G, eds. When Continents Collide: Geodynamics and Geochemistry of Ultrahigh-Pressure Rocks. Netherlands: Kluwer Academic Publishers. 261-273 |
| Tsai C H, Liou J G, 2000. Eclogite-Facies Relics and Inferred Ultrahigh-Pressure Metamorphism in the North Dabie Complex, Centra-l Eastern China. American Mineralogist, 85: 1-8 doi: 10.2138/am-2000-0101 |
| Wang Q C, Cong B L, 1996. Tectonic Significance of Ultrahigh Pressure Rocks in Dabie Mountains. Science in China (D), 39: 311-318 |
| Wang X M, Liou J G, Mao H K, 1989. Coesite-Bearing Eclogite from the Dabie Mountains, Central China. Geology, 17: 1085-1088. |
| Wei C J, Shan Z G, Zhang L F, et al, 1997. Confirmation of Eclogite in Northern Dabie and Its Geological Significance. Chinese Science Bulletin, 42(170): 1832-1835 |
| Xu P C, Li R B, 1996. Raman Spectroscopy in Geosciences. Xi'an: Shaanxi Technology Publishing Company |
| Xu P C, Li R B, Wang Z H, et al, 1992. The Raman Spectrum Study of High Pressure Metamorphic Coesite in Central China. Northwest Geosience, 13: 111-120 |
| Xu S T, Liou Y C, Jiang L L, et al, 1999. Confirmation of Ultrahigh Pressure Belt of Northern Dabie and the Existed Problems. Progress in Nature Science, 9(1): 14-23 |
| Xu S T, Okey A I, Sengor A G, 1992. Diamond from the Dabie Shan Metamorphic Rocks and Its Implications for Tectonic Setting. Science, 256: 80-82 doi: 10.1126/science.256.5053.80 |
| Xu Z Q, 1987. Etude ectonique et micotectonique de la chaine paleozoique et Triasique des Qinglings (China). Montpellier: Univ Sci Tch Langedoc |
| Zhai M, Cong B, Zhang Q, et al, 1994. The Northern Dabieshan Terrane: A Possible Andean-Type Arc. International Geology Review, 36: 867-883 doi: 10.1080/00206819409465492 |
| Zhang L F, David J E, Jiang L B, et al, 2001. Ultrahigh Pressure Metamorphic Eclogites in Western Tianshan, Xinjiang. Abstract in "Workshop on Continental Deep Subduction, Detachment and Thinning". 9-12 |
| Zhang J F, Jin Z M, 1999. Review on Phase Transformation of Coesite-Quartz from Ultra-High Pressure Metamorphic Rocks. Geological Science and Technology Information, 18(3): 6-10 |
| Zhang R Y, Liou J G, Tsai C H, 1996. Petrogenesis of a High-Temperature Metamorphic Terrane: A New Tectonic Interpretation for the North Dabieshan, Central China. Journal of Metamorphic Geology, 14: 319-333 doi: 10.1111/j.1525-1314.1996.00319.x |
| Zhu Y F, Ogasawara Y, 2002. Phlogopite and Coesite Exsolution from Super-Silicic Clinopyroxene. International Geology Review, 44: 831-836 doi: 10.2747/0020-6814.44.9.831 |
Figures(6)
Copyright © 2013-2020 Journal of Earth Science 鄂ICP备15021562号-2
Tel: +86-27-67885075 Fax: +86-27-67885075 E-mail: xbb@cug.edu.cn
Address: Editorial Office of Journal, China University of Geosciences, Yujiashan, Wuhan, Hubei 430074, P. R. China
Supported by:
Beijing Renhe Information Technology Co. Ltd
E-mail:
info@rhhz.net
DownLoad:
