| 秦岭伏牛山构造带的矿物岩石学特征与流变学分析 |
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| 引用本文： | 任升莲,宋传中,Lin Shoufa,李加好,张浩然,涂文传,章俊杰.秦岭伏牛山构造带的矿物岩石学特征与流变学分析[J].地质科学,2011,46(2):376-391. |
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| 作者姓名： | 任升莲 宋传中 Lin Shoufa 李加好 张浩然 涂文传 章俊杰 |
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| 作者单位： | 1.合肥工业大学资源与环境工程学院 合肥 230009；2.加拿大滑铁卢大学Ont., Canada N2L3G1 |
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| 基金项目： | 国家自然科学基金，中石化基础研究项目 |
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| 摘 要： | 本文通过对伏牛山构造带岩石的矿物岩石学、石英重结晶型式、石英分维值和有限应变等特征分析研究,认为伏牛山构造带的变质-变形深受洛南-栾川断裂带的影响,其变化有明显的规律性,从断裂带往北岩石从糜棱岩依次过渡为片岩-片麻岩-花岗岩原岩.构造带内发育多种糜棱岩,岩石变形强烈,远离构造带岩石的变形逐渐变弱.从构造带往北,石英的重...
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| 关 键 词： | 秦岭造山带 伏牛山构造带 重结晶机制 流变学 岩石有限应变 |
| 收稿时间： | 2010-09-10 |
Mineralogy characteristics and rheological analysis of Funiushan tectonic belt in Qinling orogenic belt |
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| Ren Shenglian,Song Chuanzhong,Lin Shoufa,Li Jiahao,Zhang Haoran,Tu Wenchuan,Zhang Junjie.Mineralogy characteristics and rheological analysis of Funiushan tectonic belt in Qinling orogenic belt[J].Chinese Journal of Geology,2011,46(2):376-391. |
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| Authors: | Ren Shenglian Song Chuanzhong Lin Shoufa Li Jiahao Zhang Haoran Tu Wenchuan Zhang Junjie |
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| Institution: | 1.School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009;2.Department of Earth Sciences, University of Waterloo, Ont., Canada N2L3G1 |
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| Abstract: | Based on mineral petrology，type of quartz recrystallization，quartz fractal dimension and finite strain analysis of Funiushan tectonic belt，the results showed that the characteristics of metamorphic deformation in Funiushan tectonic belt changed in apparent regularity under the influence of Luonan Luanchuan fault belt.Rocks from the fault zone to the north were in proper order：mylonite schist gneiss granite.A variety of strong deformed mylonites were developed in the tectonic belt，the deformation of rocks generally weakened as them away from the tectonic belt.From tectonic zone to the north，the pattern of recrystallization of quartz changes from the SR to the GBM，the ratio of axial gradually become smaller，the shape of strain ellipsoid changes from long cigar to flat ellipsoid，and the deformation of rocks gradually weakened.These features reflect that tectonic stress changes from small to lager，the temperature changes from low to high.From west to east of the tectonic belt，the type of re crystallization changes from dislocation glide BLG to the SR and GBM pattern and the changes of fractal dimension reflects that temperature and tectonic stress increases gradually，grade of metamorphism gradually becomes deep and plastic flow is enhanced.Metamorphic temperature of Funiushan tectonic belt were estimated in the range of 300 ℃～520 ℃，strain rate value of 411183E15～368947E 17.It belongs to high metamorphism temperature and medium strain rate environment.The strain rate and tectonic stress decrease as it far away from the fault belt.It reflects that Luo Luan is a fault belt with strong compressoshear. |
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| Keywords: | Qinling orogenic belt Funiushan tectonic belt Mechanism of recrystallization Fractal Rheology Finite strain of rock |
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