成都理工大学学报（自然科学版）2017，Vol.44Issue(2)：195-204,10.DOI:10.3969/j.issn.1671-9727.2017.02.09
黑色页岩化学风化过程的微观机制及演化
Research on micro-mechanism and evolution of black shale in chemical weathering process
摘要
Abstract
Aiming at unraveling the complex issue of system evolution in chemical weathering process of black shale,the research on micro-mechanism and evolution of black shale is carried out in such aspects as microstructure changes,non-equilibrium thermodynamics and dissipative structure during weathering processes.On the basis of geology analysis,combined with the X-ray diffraction (XRD) test,scanning electron microscopy and energy dispersive X-ray spectrometer test (SEM-EDS),the mineralogical composition and structure of black shale in different weathering zones and its original shale are analyzed contrastively,and the chemical weathering micro-mechanisms of black shale in weathering systems are discussed.The non-equilibrium thermodynamics theory and dissipative structure principle are also used to systematically analyze the formation process of dissipative structure and weathering evolvement in chemical weathering systems of black shale.It is indicated that the minerals are translated through the mineralogical dissolution,secondary mineral generation,ion exchange and adsorption effect.The connection between mineral grains is changed and a large number of micro-pores are generated by erosion under action of acidic water during chemical weathering process of black shale.Non-uniform stress between mineral particles occurs in micro-pores,where the clay minerals and some sulfate minerals fill in the pores,and then change the internal micro-structure of shale in further.The chemical weathering system of black shale is an open and complex one and it is an irreversible process system in the non-equilibrium thermodynamics calculation.It reveals that the weathering system generally undergoes three stages:near-equilibrium state,far-from-equilibrium state,and ultimately,generated the stable dissipative structure.关键词
黑色页岩/化学风化/微观机制/非平衡态热力学/耗散结构Key words
black shale/chemical weathering/micro-mechanism/non-equilibrium thermodynamics/dissipative structure分类
天文与地球科学引用本文复制引用
凌斯祥,巫锡勇,孙春卫,廖昕..黑色页岩化学风化过程的微观机制及演化[J].成都理工大学学报（自然科学版）,2017,44(2):195-204,10.基金项目
国家自然科学基金项目(41172261,41472256,41502269) （41172261,41472256,41502269）
四川省科技支撑计划项目(2012SZ0051) （2012SZ0051）
西南交通大学博士创新基金(SWJTU2015-40)及轨道交通行业拔尖创新人才项目(SWJTU2012-19). （SWJTU2015-40）
