【摘要】 侏罗纪蒙甘青宁地处西伯利亚板块,太平洋中依泽奈崎、法拉隆、菲尼克斯3板块及印度板块之间的东亚腹地部位。早、中侏罗世进入造山后的伸展-走滑盆山构造阶段,在盆山构造格局的负形地段孕育着大小不一的8种构造类型盆地,其偏南的多数地区处于亚热带温暖潮湿气候区,沉积了大量煤层及有机质页岩。晚侏罗世,盆山构造经历了不均匀挤压和抬升作用,不少早期盆地逐渐消失,并转为热带、亚热带干旱气候,残存盆地主体为一套红色沉积。编图研究表明,早、中侏罗世时期全区既不是统一的“泛盆”,也不是现今侏罗系分布区的小型盆地区,而是大中有小、盆山相间、多带展布的盆地群构造地貌。更多还原

【Abstract】 The Inner Mongolia-Gansu-Qinghai-Ningxia region was located in the interior of East Asia be-tween the Siberian plate ,three plates in the Pacific Ocean and Indian plate during the Jurassic.During the Early and Middle Jurassic ,the area went into the post-orogenic extensional-strike-slip basin-range stage.Eight types of structural basins of varying size were pregnant in the negative landform part of the basin-range tectonic pattern and most of the southern area was situated in a subtropical warm-wet climatic dis-trict and large amounts of coal and organic schist were deposited then.In the Late Jurassic ,the basin-range tectonic pattern underwent inhomogeneous compression and uplifting and many early-formed basins gradually disappeared and the climate changed to tropical and subtropical arid ones.Then the principal part of the residual basins accepted red sediments.Map compiling study shows that during the Early and Middle Jurassic the whole area was neither a unified " overflow basin " nor a small basin area that we now see in the Jurassic area but a basin swarm tectono-geomorphology topography with a multi-zone ,basin-ridge pattern.更多还原