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江西及其邻区当前争论的几个大地构造问题
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作者 吴安国 《江西地质科技》 1991年第4期177-184,共8页
根据区域地质资料,对于江西及其邻区当前争论的几个大地构造问题,如:“板溪群”是前震旦纪的基底变质岩系,还是中生代仰冲的构造混杂岩;晚古生代-三叠纪是陆表浅海盆地,还是洋盆;华南地区是加里东褶皱带,还是中生代的陆-陆碰... 根据区域地质资料,对于江西及其邻区当前争论的几个大地构造问题,如:“板溪群”是前震旦纪的基底变质岩系,还是中生代仰冲的构造混杂岩;晚古生代-三叠纪是陆表浅海盆地,还是洋盆;华南地区是加里东褶皱带,还是中生代的陆-陆碰撞造山带;地壳构造的演化是经历多次裂解、闭合、还是陆壳的不断增生,阐述了问题等作者的基本观点和初步认识。 展开更多
关键词 江西 大地构造 地壳构造演化 板溪群 基底变质岩 构造混杂岩 华南地区 陆表浅海盆地
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Deposition of coal-bearing measures and coal accumulation under marine transgression 'events' in North China epicontinental sea basin 被引量:1
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作者 李增学 余继峰 +1 位作者 郭建斌 韩美莲 《Journal of Coal Science & Engineering(China)》 2006年第1期29-34,共6页
In recent years, studies show that coal formed during marine transigression process is also important in coal accumulation basin. Still, the characteristics of coal formation is more clearly demonstrated by the coal f... In recent years, studies show that coal formed during marine transigression process is also important in coal accumulation basin. Still, the characteristics of coal formation is more clearly demonstrated by the coal formation in TST in the sequence stratigraphic framework. Based on the study of the characteristics of coal formation in epicontinental coal accumulation basin, the viewpoint that coal was formed under marine transgression was put forward by the authors and the mechenism thereof was also analyized. Marine transgression resulted in the forming of swamp and then the peat swamp. And the transgression later on put the peat formed in advance in deep water environment to form coal in the end. The important stratigraphic horrizons, such as coal seams, marine facies layers, formed with marine transgression are of the property of isochronism. 展开更多
关键词 marine transgression events coal accumulation under events epicontinental basin
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