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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,石英的重结晶型式从SR向GBM变化,轴比逐渐变小,应变椭球体从长雪茄到扁椭球状,变形逐渐减弱,反映出构造应力从大到小的变化;沿构造带自西往东,石英重结晶型式由BLG型式到SR和GBM型式,分维数的变化等均反映出温度、构造应力逐渐增加,变质程度逐渐加深,塑性流变加强的特点。伏牛山构造带估算变质温度范围为300℃～520℃、应变速率值为4.11183E-15～3.68947E-17,属中-高温、中应变速率变质环境。靠近断裂带应变速率和构造应力大,远离断裂带逐渐减小,反映洛南—栾川断裂带较强的压扭性质。
Based on the analysis of mineralogy petrology, recrystallization of quartz, fractal dimension of quartz and finite strain of Funiu Mountain tectonic belt, it is considered that the metamorphism and deformation of Funiu Shan tectonic belt are deeply influenced by the Luonan-Luanchuan fault zone , The change has obvious regularity, and the rocks from north to north of the fault zone transition from mylonite to schist-gneiss-granite protolith. A variety of mylonites are developed in the tectonic belt. The deformation of the rock is strong and the deformation away from the tectonic zone becomes weaker. From the north to the north of the tectonic belt, the recrystallized form of quartz changes from SR to GBM, and the axial ratio gradually decreases. From the long cigar to the oblate ellipsoid, the deformed ellipsoid gradually deforms, reflecting the change of tectonic stress from big to small. From west to east, the crystalline recrystallization pattern of the structural belt varies from BLG type to SR and GBM type, and the fractal dimension changes reflect the gradual increase of temperature, tectonic stress, gradual deepening of metamorphism and enhancement of plastic rheology. The estimated temperature range of Funiu Shan tectonic belt is from 300 ℃ to 520 ℃, and the strain rate is 4.11183E-15 ~ 3.68947E-17, belonging to medium-high temperature and medium strain rate metamorphic environment. Near the fault zone, the strain rate and tectonic stress are large, and gradually decrease away from the fault zone, reflecting the strong compression-torsion properties of the Luonan-Luanchuan fault zone.