| 变质相平衡的研究进展 |
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| 引用本文： | 魏春景,周喜文.变质相平衡的研究进展[J].地学前缘,2003,10(4):341-351. |
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| 作者姓名： | 魏春景 周喜文 |
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| 作者单位： | 北京大学,地球与空间科学学院,北京,100871 |
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| 基金项目： | 国家自然科学基金(40172031) |
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| 摘 要： | 变质相平衡是变质岩石学中最核心的问题之一,20世纪90年代以来,国外在这一领域取得了重要进展,即利用内洽性热力学数据库、THERMOCALC程序以及合理的矿物相活度模型定量计算模式体系中的岩石成因格子(P-T投影图)和有关的各种剖面图,如共生图解和针对特定岩石组分的p-T、p-x和T-x视剖面图等。尤其是在p-T视剖面图解上,可以定量计算矿物成分、矿物摩尔含量及岩石饱和水含量等值线,从而可以定量地阐述天然岩石在p-T-x空间内的相平衡关系、确定岩石形成的p-T条件和p-T-t轨迹。
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| 关 键 词： | 变质相平衡 THERMOCALC程序 内洽性热力学数据库 岩石成因格子 |
| 文章编号： | 1005-2321(2003)04-0341-11 |
| 修稿时间： | 2003年4月7日 |
PROGRESS IN THE STUDY OF METAMORPHIC PHASE EQUILIBRIUM |
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| WEI Chun-jing,ZHOU Xi-wen School of Earth and Space Sciences,Peking University,Beijing ,China.PROGRESS IN THE STUDY OF METAMORPHIC PHASE EQUILIBRIUM[J].Earth Science Frontiers,2003,10(4):341-351. |
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| Authors: | WEI Chun-jing ZHOU Xi-wen School of Earth and Space Sciences Peking University Beijing China |
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| Institution: | WEI Chun-jing,ZHOU Xi-wen School of Earth and Space Sciences,Peking University,Beijing 100871,China |
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| Abstract: | Phase equilibrium is one of the pivotal issues in metamorphic petrology. Since the beginning of 1990's, a great progress has been made in this field. Using the internally consistent thermodynamic data set, the software THERMOCALC and some available models of activity-composition relation for mineral phase, petrogenetic grids (p-T projection) for model systems and related compatibility diagrams, p-T. p-x and T-x pseudosections for specific bulk compositions can be quantitatively calculated. Especially the contoured p-T pseudosections with mineral compositions, mole proportions and saturated water contents in rock lead to a capability to quantitatively elaborate the phase relations in p-T-x space for natural rocks, moreover, to confine the p-T conditions and p-T-t path of metamorphism. |
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| Keywords: | phase equilibrium THERMOCALC internally consistent thermodynamic data set petrogenetic grid |
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