泥质岩及其变质脱水产物中含水矿物稳定性的实验研究

李营; 唐红峰; 刘丛强; 周志华

doi:10.11858/gywlxb.2006.03.006

泥质岩及其变质脱水产物中含水矿物稳定性的实验研究

doi: 10.11858/gywlxb.2006.03.006

李营^1,2,,
唐红峰¹,
刘丛强¹,
周志华^1,2

1.
中国科学院地球化学研究所地球深部物质与流体作用地球化学研究室，贵州贵阳 550002；
2.
中国科学院研究生院，北京 100039

详细信息

通讯作者:
李营

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出版历程
- 收稿日期: 2005-09-30
- 修回日期: 2006-01-12
- 发布日期: 2006-09-05

Experimental Study on the Stability of Hydrous Minerals in Natural Pelitic System

1.
Laboratory for Study of the Earth's Interior and Geofluids Institute of Geochemistry, Chinese Academy of Science, Guiyang 550002, China;
2.
Graduate School of Chinese Academy of Sciences, Beijing 100039, China

More Information

Corresponding author: LI Ying

摘要

摘要: 俯冲带沉积物（岩）的变质脱水作用对俯冲带流体组成、矿物和同位素组成及岛弧岩浆演化具有深远影响。以天然泥质岩为研究对象，通过高温高压实验，确定了1.5~3.5 GPa、746~930 ℃条件下，俯冲带沉积物中绿泥石、绢云母及其脱水后产物角闪石和黑云母在俯冲带的稳定范围，绘制了高温高压条件下泥质岩体系相图。研究结果表明，在泥质岩体系中，绿泥石是最早发生变质脱水的矿物，在俯冲带50 km深度以上全部分解，其分解产物角闪石可携带流体进入到俯冲带85 km处，黑云母则可俯冲至120 km或更深的深度，据此可知，在俯冲带深部，沉积物完全脱水的深度范围（120 km）要大于蚀变洋壳（90~100 km）。
- 俯冲带 /
- 泥质岩 /
- 含水矿物 /
- 变质脱水作用
Abstract: Metamorphic dehydration of subducted sediments is of importance in understanding the composition of slab-derived fluids, the mineral and isotope composition in subduction zone, which is also important for understanding the evolution of arc magmas. The stability of chlorite, sericite, amphibole and biotite has been identified in natural pelitic system at pressures 1.5~3.5 GPa, and at temperatures 746~930 ℃ by high pressure experiments on natural pelite. The systematic diagram suggests that with the increasing of pressure and temperature chlorite completely decomposes at lower depth 50 km. The run production of this process-amphibole can be subducted to 85 km, and biotite devolatilizes at the depth 120 km in subduction zone. This leads to the conclusion that subducted sediments can be subducted into more deep depth (120 km) than basaltic oceanic crust.
- subduction zone /
- pelite /
- hydrous mineral /
- metamorphic dehydration

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参考文献(43)

Peacock S M. Fluid Processes in Subduction Zones [J]. Science, 1990, 248: 329-337.

Tatsumi Y, Hamilton D L, Nesbitt R W. Chemical Characteristics of Fluid Phase Released from a Subducted Lithosphere and Origin of Arc Magmas: Evidence from High-Pressure Experiments and Natural Rocks [J]. J Volca Geotherm Res, 1986, 29: 293-309.

Tatsumi Y. Migration of Fluid Phases and Genesis of Basalt Magmas in Subduction Zones [J]. J Geophys Res, 1989, 94(B4): 4697-4707.

Ulmer P, Trommsdorff V. Serpentine Stability to Mantle Depths and Subduction-Related Magmatism [J]. Science, 1995, 268: 858-861.

Liu J, Bohlen S R, Ernst W G. Stability of Hydrous Phases in Subducting Oceanic Crust [J]. Earth Planet Sci Lett, 1996, 143: 161-171.

Schmidt M W, Poli S. Experimentally Based Water Budgets for Dehydrating Slabs and Consequences for Arc Magma Generation [J]. Earth Planet Sci Lett, 1998, 163: 361-379.

Forneris J F, Holloway J R. Phase Equilibria in Subducting Basaltic Crust: Implications for H2O Release from the Slab [J]. Earth Planet Sci Lett, 2003, 214: 187-201.

You C F, Castillo P R, Gieskes J M, et al. Trace Element Behavior in Hydrothermal Experiments: Implications for Fluid Processes at Shallow Depths in Subduction Zones [J]. Earth Planet Sci Lett, 1996, 140: 41-52.

Walther J V, Orville P M. Volatile Production and Transport in Regional Metamorphism [J]. Contrib Mineral Petrol, 1982, 79: 252-257.

Hawkesworth C J, Turner S P, McDermott F, et al. U-Th Isotopes in Arc Magmas: Implications for Element Transfer from the Subducted Crust [J]. Science, 1997, 276: 551-555.

Peacock S M. The Importance of Blueschist-Eclogite Eehydration Reactions in Suducting Oceanic Crust [J]. Geol Soc Am Bull, 1993, 105: 684-694.

Ferry J M, Gerdes M L. Chemical Reactive Fluid Flow during Metamorphism [J]. Annu Rev Earth Planet Sci, 1998, 26: 255-287.

Aizawa Y, Tatsumi Y, Yamada H. Element Transport by Dehydration of Subducted Sediments: Implication for Arc and Ocean Island Magmatism [J]. The Island Arc, 1999, 8: 38-46.

Kogiso T, Tatsumi Y, Nakano S. Trace Element Transport during Dehydration Processes in the Subducted Oceanic Crust: 1. Experiments and Implications for the Origin of Ocean Island Basalts [J]. Earth Planet Sci Lett, 1997, 148: 193-205.

Kerrick D M, Connolly J A D. Metamorphic Devolatilization of Subducted Marine Sediments and the Transport of Volatiles into the Earth's Mantle [J]. Nature, 2001, 411: 293-296.

Plank T, Langmuir C H. The Chemical Composition of Subducting Sediment and Its Consequences for the Crust and Mantle [J]. Chem Geo, 1998, 145: 325-394.

Poli S, Schmidt M W. Petrology of Subducted Slabs [J]. Annu Rev Earth Planet Sci, 2002, 30: 207-235.

Schreyer W. Experimental Studies on Metamorphism of Crustal Rocks under Mantle Pressures [J]. Mineral Mag, 1988, 52: 1-26.

Schreyer W. Ultradeep Metamorphic Rocks: The Retrospective Viewpoint [J]. J Geophus Res, 1995, 100(B5): 8353-8366.

Harley S L, Carswell D A. Experimental Studies on the Stability of Eclogite Facies Mineral Parageneses [A]//Carswell D A. Eclogite Racies Rocks [C]. Glasgow: Blackie, 1990: 53-82.

Harley S L, Carswell D A. Ultradeep Crustal Metamorphism: A Prospective View [J]. J Geophys Res, 1995, 100(B5): 8367-8380.

Staudigel H, Schreyer W. The Upper Thermal Stability of Clinochlore, Mg5Al[AlSi3O10](OH)8, at 10~35kb PH2O [J]. Contrib Mineral Petrol, 1977, 61: 187-198.

Inoue T, Irifune T, Yurimoto H, et al. Decomposition of K-Amphibole at High Pressures and Implications for Subduction Zone Volcanism [J]. Phys Earth Plane Interiors, 1998, 107: 221-231.

Massonne H J, Szpurka Z. Thermodynamic Properties of White Micas on the Basis of High-Pressure Experiments in the Systems K2O-MgO-Al2O3-SiO2-H2O and K2O-FeO-Al2O3-SiO2-H2O [J]. Lithos, 1997, 41: 229-250.

Massonne H J. Experimental Aspects of UHP Metamorphism in Pelitic Systems [J]. Inter Geo Re, 1999, 41: 623-638.

Wei C J, Powell R. Phase Relations in High-Pressure Metapelites in the System KFMASH(K2O-FeO-MgO-Al2O3-SiO2-H2O)with Application to Natural Rocks [J]. Cont Mineral Petrol, 2003, 145: 301-315.

Wei C J, Powell R. Calculated Phase Relations in High-Pressure Metapelites in the System NKFMASH(Na2O-K2O-FeO-MgO-Al2O3-SiO2-H2O) [J]. J Petro, 2004, 45: 183-202.

Zhang C G, Wei Ch J. Phase Equilibria for Metapelites in the System K2O-FeO-MgO-Al2O3 SiO2-H2O(KFMASH) [J]. Act Petro Sin, 2004, 20(3): 725-736. (in Chinese)

张翠光, 魏春景. 中-低压泥质岩在KFMASH体系中的相平衡关系 [J]. 岩石学报, 2004, 20(3): 725-736.

Tang H F, Liu C Q. Mass Transfer and Element Mobility of Rocks during Regional Metamorphism－A Case Study of Metamorphosed Pelites from the Shuangqiaoshan Group in Lushan [J]. Geo Rev, 46(3): 245-254. (in Chinese)

唐红峰, 刘丛强. 区域变质作用中岩石的质量迁移和元素活动--以庐山双桥山群变泥质岩为例 [J]. 地质论评, 2000, 46(3): 245-254.

Taylor S R, McLennan S M. The Continental Crust: Its Composition and Evolution [M]. Oxford: Blackwell Science, 1985: 67.

Xie H S. An Introduction to Material Science in the Earth's Interior [M]. Beijing: Science Press, 1997: 69-70. (in Chinese)

谢鸿森. 地球深部物质科学导论 [M]. 北京: 科学出版社, 1997: 69-70.

Akella J. Quartz＝Coesite Transition and the Comparative Friction Measurements in Piston-Cylinder Apparatus Using Talc-Alsimag-Glass(TAG) and NaCl High-Pressure Cells [J]. Neues Jahrb Mineral Monatsh, 1979, 5: 217-224.

Goto A, Tatsumi Y. Stability of Chlorite in the Upper Mantle [J]. Am Mineral, 1990, 75: 105-108.

Delany J M, Helgeson H C. Calculation of the Thermodynamic Consequences of Dehydration in Subducting Oceanic Crust to 100 kb and 800℃ [J]. Am J Sci, 1978, 278: 638-686.

Tatsumi Y, Eggins S. Subduction Zone Magmatism [M]. USA: Blackwell Science, Inc, 1995: 100-105.

Ahrens T J. Water Storage in the Mantle [J]. Nature, 1989, 342: 122-123.

Peacock S M. Numerical Simulation of Metamorphic Pressure-Temperature-Time Paths and Fluid Production in Subducting Slabs [J]. Tectonics, 1990b, 9: 1197-1211.

Zhang L, Ellis D J, Arculus R J, et al. 'Forbidden Zone' Subduction of Sediments to 150 km Depth-the Reaction of Dolomite to Magnesite+Aragonite in the UHPM Metapelites from Western Tianshan, China [J]. J Meta Geo, 2003, 21: 523-529.

Li Y, Tang H F, Liu C Q, et al. Experimental Study on Dehydration of Pelite by High-Pressure Differential Thermal Analysis [J]. Acta Petro Sin, 2005, 21(3): 986-992. (in Chinese)

李营, 唐红峰, 刘丛强, 等. 泥质岩脱水作用的高压差热实验研究 [J]. 岩石学报, 2005, 21(3): 986-992.

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