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Tectonic implication of stock-work microbreccias

机译:储层微角砾岩的构造意义

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The stockwork microbreccia found in the Dabie and Helan Mountains bears no relation to either meteorite impact and cryptoexplosion, or fault displacement. It is controlled by tensional or transtensional fracture network in relatively hard felsic crystalline rocks, appearing as breccia with dark cryptocrystalline matrix. The kilometer-scale distribution and complicated relation to fracture system of the stockwork microbreccias, randomly distributed autochthonous fragments of host rock, ultracataclasiswithout notable displacement in the cryptocrystalline matrix, and a probable solid-state amorphization deformation mechanism all suggest that large-scale, high-energy and rapid brittle fracturing event might have occurred in the rocks at relatively deepcrustal level in the areas.
机译:在大别山和贺兰山发现的储层微角砾岩与陨石撞击和隐爆,断层位移无关。它由相对坚硬的长英质结晶岩中的张性或超张性断裂网络控制,表现为角砾岩和深色隐晶基质。储层微角砾岩的千米尺度分布及其与断裂系统的复杂关系,基质岩石的随机分布的块状碎屑,超隐伏在隐晶基质中没有明显位移的超催化作用以及可能的固态非晶化变形机制都表明,大规模,高强度的在该地区较深地壳的岩石中可能发生了能量和快速脆性破裂事件。

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