• 中国出版政府奖提名奖

    中国百强科技报刊

    湖北出版政府奖

    中国高校百佳科技期刊

    中国最美期刊

    留言板

    尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

    姓名
    邮箱
    手机号码
    标题
    留言内容
    验证码

    大别山北部石榴二辉麻粒岩变质结构和水活度及其演化特征

    苏文 徐树桐 江来利 刘贻灿 吴维平

    苏文, 徐树桐, 江来利, 刘贻灿, 吴维平, 2000. 大别山北部石榴二辉麻粒岩变质结构和水活度及其演化特征. 地球科学, 25(2): 152-158.
    引用本文: 苏文, 徐树桐, 江来利, 刘贻灿, 吴维平, 2000. 大别山北部石榴二辉麻粒岩变质结构和水活度及其演化特征. 地球科学, 25(2): 152-158.
    SU Wen, XU Shutong, JIANG Laili, LIU Yican, WU Weiping, 2000. METAMORPHIC STRUCTURE, WATER ACTIVITIES AND THEIR EVOLUTIONARY FEATURES OF PYRIGARNITE, NORTH OF DABIE MOUNTAINS, EAST OF CHINA. Earth Science, 25(2): 152-158.
    Citation: SU Wen, XU Shutong, JIANG Laili, LIU Yican, WU Weiping, 2000. METAMORPHIC STRUCTURE, WATER ACTIVITIES AND THEIR EVOLUTIONARY FEATURES OF PYRIGARNITE, NORTH OF DABIE MOUNTAINS, EAST OF CHINA. Earth Science, 25(2): 152-158.

    大别山北部石榴二辉麻粒岩变质结构和水活度及其演化特征

    基金项目: 

    国家自然科学基金项目 49794041

    详细信息
      作者简介:

      苏文, 女, 1962年生, 博士研究生, 主要研究方向为变质岩石学及显微构造

    • 中图分类号: P588.34

    METAMORPHIC STRUCTURE, WATER ACTIVITIES AND THEIR EVOLUTIONARY FEATURES OF PYRIGARNITE, NORTH OF DABIE MOUNTAINS, EAST OF CHINA

    • 摘要: 通过对大别山北部石榴二辉麻粒岩岩相学、矿物地质温压计和热力学计算, 获得4个主要的变质演化阶段的矿物共生组合、温压条件和相应的水活度条件: (1) 榴辉岩相阶段(M1), 以Cpx (含Jd) +Q +Ru +Gt组合为代表的残留矿物, 并呈包体的形式产于石榴石中, t=612~750℃; (2)麻粒岩相阶段(M2), 以Opx+Cpx +Gt+Q +Ti+Mt矿物组合为特征, 其相应的t =837~887℃, p=1.03~1.25GPa, 水活度为0.718~0.799; (3) 角闪岩相阶段(M3), 矿物组合为Cpx +Gt+Amp +Pl+Mt, t=530~660℃, p=0.85~0.95GPa, 其相应的水活度为0.2 3~ 0.2 4;和(4) 低角闪岩相阶段(M4), 其形成的温压条件为t=495℃, p=0.5 6~ 0.70GPa, 相应的水活度为0.11~ 0.13.石榴二辉麻粒岩变质反应、变质结构、矿物组合及其演化, 不仅受控于形成时的温压条件, 而且与形成时体系中水活度的演化有着密切的成因关系.水活度的演化特征表明, 变质流体在变质作用过程中, 对变质反应温度起着一定的缓冲作用.

       

    • 图  1  大别山北部石榴二辉麻粒岩显微照片(样品号: 881067)

      a.石榴石中含有Ru, Q, Cpx等包体; 单偏光, ×100;b.单斜辉石退变成Cpx+Amp+Pl的后成合晶, 但仍可见其外形; 正交偏光, ×100;c.岩石中的Opx+Cpx+Amp+Pl的平衡共生; 单偏光, ×160;d.石榴石冠状体结构由内带和外带组成; 单偏光, ×200

      Fig.  1.  Micrographs showing mineral parageneses and metamorphic textures of pyrigarnite in northern Dabie Mountains

      表  1  大别山北部石榴二辉麻粒岩代表性矿物电子探针分析

      Table  1.   Elcctron microprobe analysis of representative minerals in pvrigarnite from northern Dabie Mountains

      表  2  大别山北部石榴二辉麻粒岩变质温压条件计算结果

      Table  2.   Metamorphic temperature and pressure of pyrigarnite in northern Dabie Mountains

      表  3  不同变质阶段矿物的水活度计算结果

      Table  3.   Values of water activities of different metamorphic stages

    • [1] 徐树桐, 刘贻灿, 江来利, 等. 大别山的构造格局和演化[M]. 北京: 科学出版社, 1994.
      [2] 徐树桐, 苏文, 刘贻灿, 等. 大别山东段高压变质岩中的金刚石[J]. 科学通报, 1991, 36(17): 1318~1321. https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB199117011.htm
      [3] You Z D, Han Y J, Yang W R, et al. The high-pressure and ultra-high-pressure metamorphic belt in the east Qinling and Dabie Mountains, China[M]. Wuhan: China University of Geosciences Press, 1996.
      [4] 从柏林, 王清成, 叶凯. 山东威海含柯石英麻粒岩的发现及其意义[J]. 科学通报, 1996, 38: 1235~1238.
      [5] Su W, Xu S T, Jiang L L, et al. Coesite from quartzjadeitite in the Dabie Mountains, Eastern China[J]. Mineral Mag, 1996, 60: 229~239.
      [6] Deer W A, Howie R A, Zussman J. Rock-forming minerals (Volume 2A) - single-chain silicates[M]. New York: Longman, 1978.
      [7] Leake B E. Nomenclature of amphibole[J]. Mineral Mag, 1978, 42: 533~563. doi: 10.1180/minmag.1978.042.324.21
      [8] Ellis D J, Green D H. An experimental study of the effect of Ca upon garnet-clinopyroxene Fe-Mg exchange equilibria [J]. Contrib Mineral Petrol, 1979, 71: 13~22. doi: 10.1007/BF00371878
      [9] Krogh E J. The garnet-clinopyroxene Fe-Mg geothermometer - a reinter pretation of existing experimental data[J]. Contrib Mineral Petrol, 1988, 99: 44~48. doi: 10.1007/BF00399364
      [10] Powell R. Regression diagnostics and robust regression in geothermometer/geobarometer calibration: the garnetclinopyroxene geothermometer revised[J]. J Metamorphic Geo, 1985, 3: 327~342. doi: 10.1111/j.1525-1314.1985.tb00324.x
      [11] Wells R D. Pyroxene thermometry in simple and complex systems[J]. Contrib Mineral Petrol, 1977, 62: 129~ 139. doi: 10.1007/BF00372872
      [12] Wood B J, Banno S. Garnet-orthopyroxene and orthopyroxene-clinopyroxene relationship in simple and complex systems[J]. Contrib Mineral Petrol, 1973, 42: 109~ 124. doi: 10.1007/BF00371501
      [13] Harley S L, Green D H. Garnet-orthopyroxene barometry for granulites and peridotites. Nature, 1982, 300: 697~701. doi: 10.1038/300697a0
      [14] Harley S L. An experimental study of the partitioning of Fe and Mg between garnet and orthopyroxene[J]. Contrib Mineral Petrol, 1984, 86: 359~373. doi: 10.1007/BF01187140
      [15] Paria P, Bhattacharya A, Sen S K. The reaction garnet+clinopyroxene+quartz =2orthopyroxene+anorthite: a potential geobarometer for granulites[J]. Contrib Mineral Petrol, 1988, 99: 126~133. doi: 10.1007/BF00399372
      [16] Plyusnina L P. Geotheromometry and geobarometry of plagioclase-hornblende bearing assemblages[J]. Contrib Mineral Petrol, 1982, 80: 140~146. doi: 10.1007/BF00374891
      [17] Spear F S. Amphibole-plagioclase equilibria: an empirical model for the relation albite+tremolite+edenite+4quartz[J]. Contrib Mineral Petrol, 1980, 77: 355~364.
      [18] Hollister L S, Grissom G C, Peters E K, et al. Confirmation of the emprical correlation of Al in hornblende with pressure of solidification of calc-alkaline plutons[J]. Amer Mineral, 1987, 72: 231~239.
      [19] Schmidt M W. Amphibole composition in tonalite as a function of pressure: an experimental calibration of the A-l in-hornblende barometer[J]. Contrib Mineral Petrol, 1992, 110: 304~310. doi: 10.1007/BF00310745
      [20] Spear F S. An experimental study of hornblende stability and compositional variability in amphibolite[J]. Amer Jour of Science, 1981, 281: 697~734. doi: 10.2475/ajs.281.6.697
      [21] Triboulet C I. Controls on p-T-t deformation path from amphibole zonation during progressive metamorphism of basic rocks, Centuary of the River Vilaine, South Brittany France [J]. J Metamorphic Geo, 1988, 6: 117~133. doi: 10.1111/j.1525-1314.1988.tb00412.x
    • 加载中
    图(1) / 表(3)
    计量
    • 文章访问数:  3659
    • HTML全文浏览量:  112
    • PDF下载量:  3
    • 被引次数: 0
    出版历程
    • 收稿日期:  1999-05-28
    • 刊出日期:  2000-03-25

    目录

      /

      返回文章
      返回