• 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

    北大别木子店石榴辉石岩的麻粒岩相退变质作用

    张泽明 钟增球 游振东 胡开明

    张泽明, 钟增球, 游振东, 胡开明, 2000. 北大别木子店石榴辉石岩的麻粒岩相退变质作用. 地球科学, 25(3): 295-301.
    引用本文: 张泽明, 钟增球, 游振东, 胡开明, 2000. 北大别木子店石榴辉石岩的麻粒岩相退变质作用. 地球科学, 25(3): 295-301.
    ZHANG Zeming, ZHONG Zengqiu, YOU Zhendong, HU Kaiming, 2000. GRANULITE-FACIES RETROGRADE METAMORPHISM OF GARNET PYROXENITE IN MUZIDIAN, NORTHERN DABIE MOUNTAINS. Earth Science, 25(3): 295-301.
    Citation: ZHANG Zeming, ZHONG Zengqiu, YOU Zhendong, HU Kaiming, 2000. GRANULITE-FACIES RETROGRADE METAMORPHISM OF GARNET PYROXENITE IN MUZIDIAN, NORTHERN DABIE MOUNTAINS. Earth Science, 25(3): 295-301.

    北大别木子店石榴辉石岩的麻粒岩相退变质作用

    基金项目: 

    国家自然科学基金重大项目 4979404

    面上项目 49772142

    面上项目 49772146

    详细信息
      作者简介:

      张泽明, 男, 副教授, 博士后, 1961年生, 1996年毕业于中国地质大学, 获博士学位, 现主要从事岩石学与变质地质学研究

    • 中图分类号: P588.3

    GRANULITE-FACIES RETROGRADE METAMORPHISM OF GARNET PYROXENITE IN MUZIDIAN, NORTHERN DABIE MOUNTAINS

    • 摘要: 详细的岩相学、矿物化学、岩石化学和变质作用温压条件计算表明, 大别变质地体北部角闪二辉麻粒岩是石榴辉石岩在其抬升过程中经历麻粒岩相退变质作用的产物, 峰期变质作用至少是发生在高压榴辉岩相条件下, 而且地温梯度较低.石榴辉石岩的退变质作用p-t轨迹以早期的近等温降压、中期的近等压升温和晚期的降温降压为特征.这一结果表明北大别变质地体的峰期变质作用并非仅达麻粒岩相.

       

    • 图  1  大别地体简化地质图(据文献[1]修改)

      UAF.高角闪岩相; LAF.低角闪岩相; EAF.绿帘角闪岩相.1.随县群; 2.宿松群; 3.大别杂岩; 4.花岗岩; 5.断裂; 6.剪切带; 7.麻粒岩/样品位置

      Fig.  1.  Sketch geological map of Dabie terrain

      图  2  角闪二辉麻粒岩和石榴辉石岩残留体显微照片

      A.角闪二辉麻粒岩, 由斜方辉石(Opx)、斜长石(Pl)、角闪石(Amp)和少量单斜辉石(Cpx)组成; B.角闪二辉麻粒岩中的石榴石后成合晶假象(Sym); C.石榴辉石岩的残留体石榴石(Grt)和单斜辉石(Cpx), 石榴石发育由斜方辉石和斜长石组成的后成合晶冠状体(Sym); D. 石榴辉石岩的石榴石残留体(Grt)及其由斜方辉石和斜长石组成的后成合晶冠状体(Sym).A, B和C为单偏光, 长边为3.3 cm, D为正交偏光, 长边3.3 cm

      Fig.  2.  Photomicrographs of amphibole two-pyroxene granulite and relic of garnet pyroxenite

      图  3  石榴石的化学成分环带

      分析点间距为0.03 mm

      Fig.  3.  Chemical compositional zoning of garnet

      图  4  石榴辉石岩稀土元素球粒陨石标准化分配型式

      Fig.  4.  Chondrite-normalized REE distribution pattern of garnet pyroxenite

      图  5  石榴辉石岩变质作用p-t轨迹

      图中变质相界据Evans[19].E.榴辉岩相; G.麻粒岩相; A.角闪岩相; EA.绿帘角闪岩相; B.蓝片岩相; GS.绿片岩相.Al2O5多型转变反应据Holdaway[20]; 图中轨迹为石榴辉石岩变质作用p-t轨迹.Ⅰ.石榴辉石岩阶段; Ⅱ.后成合晶阶段; Ⅲ.麻粒岩相阶段; Ⅳ.角闪岩相阶段; 轨迹为南大别地区超高压变质岩的p-t轨迹[21, 14]; 温压计单变线分别为: BT Blundy和Holland角闪石-斜长石温度计, BTB Brey和Kokler的二辉石温度计, BTC Brey和Kokler的斜方辉石中Ca含量温度计, HP Harley石榴石-斜方辉石压力计, HT Harley石榴石-斜方辉石温度计, N P Newton和Parkins石榴石-斜方辉石-斜长石-石英反应压力计, PAP Paria等石榴石-单斜辉石-斜方辉石-斜长石-石英反应Fe端元压力计, PBP Paria等石榴石-单斜辉石-斜方辉石-斜长石-石英反应Mg端元压力计, PT Powell石榴石-单斜辉石温度计, S T Sen和Bhattacharya石榴石-斜方辉石温度计.Ky.蓝晶石; And.红柱石; Sill.夕线石; Grt.石榴石; Cpx.单斜辉石; Opx. 斜方辉石; Pl.斜长石; Qtz.石英

      Fig.  5.  Metamorphic p-t path of garnet pyroxenite

      表  1  北大别木子店石榴辉石岩的代表性矿物电子探针分析结果

      Table  1.   Representative mineral analyses of garnet pyroxenite of Muzidian of northem Dabie

      表  2  各阶段变质温压条件估算

      Table  2.   Estimated p-t conditions for various stages of metamorphism

    • [1] Chen N S, Sun M, You Z D, et al. Well-preserved garnet growth zoning in granulite from the Dabie mountains, central China[J]. J Metamorphic Geol, 1998, 16: 213~222. doi: 10.1111/j.1525-1314.1998.00074.x
      [2] Powell R. Regression diagnostics and robust regression in geothermometer/geobarometer calibration: the garnet-clinopyroxene geothermometer revisited[J]. J Metamorphic Geol, 1985, 3: 231~243. doi: 10.1111/j.1525-1314.1985.tb00319.x
      [3] Harley S L. The solubility of alumina in orthopyroxene coexisting with garnet in FeO-MgO-Al2O3-SiO2 and CaO-FeO-MgO-Al2O3-SiO2[J]. J Petrology, 1984, 25: 665~696. doi: 10.1093/petrology/25.3.665
      [4] 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
      [5] Sen S K, Bhattacharya A. An orthopyroxene-garnet thermometer and its application to the Madras charnochites [J]. Contrib Mineral Petrol, 1984, 88: 64~71. doi: 10.1007/BF00371412
      [6] Newton R C, Perkins Ⅲ D. Thermodynamic calibration of geobarometers based on the assemblages garnet-plagioclase-orthopyroxene(clinopyroxene)-quartz[J]. American Mineralogist, 1982, 67: 203~222.
      [7] Paria P, Bhattacharya A, Sen S K. The reaction garnet + clinopyroxene + quartz= 2 orthopyroxene + anorthite: A potential geobarometer for granulites[J]. Contrib Mineral Petrol, 1988, 99: 126~133. doi: 10.1007/BF00399372
      [8] 从柏林, 张儒瑗. 矿物温度计与压力计[M]. 北京: 地质出版社, 1983.
      [9] Brey G P, Kohler T. Geothermobarometry in four-phase lherzolites Ⅱ: new thermobarometers, and practical assessment of existing thermobarometers[J]. J Petrol, 1990, 31: 1353~1378. doi: 10.1093/petrology/31.6.1353
      [10] Blundy J D, Holland T J B. Calcic amphibole equilibria and a new amphibole-plagioclase geothermometer[J]. Contrib Mineral Petrol, 1992, 104: 208~224.
      [11] Schmidt M W. Amphibole composition in tonalite as a function of pressure: an experimental calibration of the Al-in-hornblende barometer[J]. Contrib Mineral Petrol, 1990, 110: 304~310.
      [12] Hammarstrom J M, Zen E-An. Aluminium in hornblende: an empirical igneous geobarometer[J]. Am Mineral, 1986, 71: 1297~1313.
      [13] Hollister L S, Grissom G C, Peters E K, et al. Confirmation of the empirical correlation of Al in hornblende with pressure of solidification of calc-alkaline plutons[J]. Am Mineral, 1987, 72: 231~239.
      [14] 游振东, 韩郁菁, 张泽明. 秦岭-大别造山带根部超高压变质岩隆升的岩石学证迹[J]. 中国科学(D辑), 1996, 26(增刊): 83~88. https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK1996S1012.htm
      [15] Zhang R Y, Liou J G, Cong B L. Petrogenesis of garnet-bearing ultramafic rocks and associated eclogites in the Su-Lu ultrahigh-p metamorphic terrane, eastern China[J]. J Metamorphic Geol, 1994, 12: 169~186. doi: 10.1111/j.1525-1314.1994.tb00012.x
      [16] Cong B L, Wang Q C, Zhang R Y, et al. Discovery of the coesite-bearing granulite in the Weihai, Shandong Province, China[J]. Chinese Science Bulletin, 1992, 37: 4~5. doi: 10.1360/csb1992-37-1-4
      [17] Cong B L, Zhang R Y, Liou J G, et al. Metamorphism evolution of UHMP rocks, Chapter 8[A]. In: Cong B L ed. Ultrahigh-pressure metamorphic rocks in the Dabieshan-Sulu region of China[C]. Beijing: Science Press, 1996. 132~135.
      [18] Wang Q C, Ishiwateri A, Zhao Z Y, et al. Coesite-bearing granulite retrograded from eclogite in Weihai, eastern China[J]. Eur J Mineral, 1993, 5: 141~152. doi: 10.1127/ejm/5/1/0141
      [19] Evans W G. Phase relations of epidote-blueschists[J]. Lithos, 1990, 25: 3~23. doi: 10.1016/0024-4937(90)90003-J
      [20] Holdaway M J. Stability of andalusite and the aluminium silicate phase diagram[J]. Am J Sci, 1971, 271: 97~131. doi: 10.2475/ajs.271.2.97
      [21] Zhang Z M, You Z D, Han Y J, et al. Petrology, metamorphic process and genesis of the Dabie-Sulu eclogite belt, eastern-central China[J]. Acta Geologica Sinica, 1996, 9: 134~156.
    • 加载中
    图(5) / 表(2)
    计量
    • 文章访问数:  4062
    • HTML全文浏览量:  364
    • PDF下载量:  14
    • 被引次数: 0
    出版历程
    • 收稿日期:  1999-09-30
    • 刊出日期:  2000-05-25

    目录

      /

      返回文章
      返回