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大别造山带东缘的郯庐断裂带,具有两期左旋走滑韧性剪切带.最近从3处早期韧性剪切带糜棱岩中,获得了3个白云母的40Ar/39Ar坪年龄,分别为192.5±0.7,189.7±0.6,188.7±0.7Ma,认为代表了早期左旋走滑变形的冷却年龄.这表明郯庐断裂带的左行平移起源于华北、华南板块沿大别-苏鲁造山带碰撞造山过程的后期,属于同造山走滑构造.而其在早白垩世滨太平洋构造活动时又被利用而再次发生左行平移.认为该断裂带在造山期可能是以转换断层型式出现的.
There are two L-strike-slip ductile shear zones in the Tan-Lu fault zone on the eastern margin of the Dabie orogen, and 40Ar / 39Ar plate ages of three muscovites have recently been obtained from three early ductile shear zone mylonites, Respectively 192.5 ± 0.7,189.7 ± 0.6,188.7 ± 0.7Ma, which is considered to represent the cooling age of the early left-lateral strike-slip deformation.This indicates that the left-lateral translation of the Tan-Lu fault zone originated in North China and the South China Plate along the Dabie-Sulu orogenic belt In the later stage of collision with orogenic processes, it belonged to the syn-orogenic strike-slip structure and was reused for left-lateral translation when it was used in the pre-Cretaceous pre-Pacific tectonic activity. It is believed that this fault zone may occur in the transitional fault during the orogeny .