At the same time , i discussed the tectonic - sedimentary configuration , sedimentation and sequence evolutive character of the northeast sichuan foreland basin in the xujiahe age , late trias . in conclution , i drawed the following conclusions 在此基础上，深入讨论和论证了川东北前陆盆地晚三叠世须家河期沉积盆地的构造?沉积格局，以及沉积、层序演化特征。
The structure phenomena in ordos basin are complicated and different in various areas . the views to mesozoic structure attribute and its evolution differ between scholars , especially much diversity on the structure attribute in late mesozoic 鄂尔多斯盆地西缘构造现象复杂、特征各异，中生代的构造属性及其演化不同学者认识有别，尤其是对晚三叠世的构造属性尚存在较大分歧。
Conclusion are obtained as follows : 1 . basin accepted sedimentation since sinian , and strata were well developed . it was marine sedimentary series from sinian to middle - triassic and become continental sedimentary series since late - triassic 主要成果及认识如下： 1 、盆地自震旦纪以来长期接受沉积，地层发育良好，震旦纪至中三叠世为海相沉积体系，晚三叠世以后为陆相沉积体系。
Based on the investigations of 46 species of fossil spores and pollen belonging to 28 genera which were found from the yongping formation and wayaopu formation of upper triassic in tongchuan region of shaanxi province , the early to late late triassic palynoflora in the region was established 摘要本文基于陕西铜川地区上三叠统水坪组和瓦窑堡组发现的孢子花粉化石28属46种的研究，建立了研究区晚三叠世早期至晚期孢粉植物群。
The results indicate that during the early late triassic , the palaeoclimatic conditions and the sedimentary environments were favorable for the formation of petroleum , while during the late late triassic , the palaeoclimatic conditions and the sedimentary environments were favorable for the formation of coal and natural gas 研究结果认为研究区晚三叠世早期古气候和沉积环境有利于石油的形成，晚期古气候和沉积环境有利于煤炭和天然气的形成。
Abstract : it is pointed out that the sanwan and sandu tectogenies belong to two times of opeirogenies , occurred early and late which in the middle - late stage of late triassic affecting central - east hunan , southeast hunan and west jiangxi to bring about respectively an elavation and tilting of primitive sedimentary basin 文摘:三湾和三都运动是造陆运动，先后发生在晚三叠世中晚期，波及湘中湘东湘东南赣西，分别导致原始沉积盆地一度隆升和掀斜。
The marginal ocean basin ' s formation and evolution model may be as follows : early triassic , rift was formed by extension and splitting in india ( gondwana ) continental margin during it was drifting southward ; late triassic , the rift had been joined in the neo - tethys ocean in the east and converted into initial ocean basin , and ayila - zhongba micro - continental was formed in north of the rift 洋盆的演化模式是：早三叠世，随着印度（冈瓦纳）大陆向南漂移，其北部边缘因引张裂解产生裂谷，于晚三叠世向东开口与新特提斯洋主体连通，洋盆初具洋壳性质，北侧形成阿依拉仲巴微陆块。
Because of the above mentioned reasons , the first one should be considered the main source rock in yili basin . by means of the modeling of the buried history and the history of thermal evolution , it can be concluded that this set of source rock had entered the ceiling of the oil - generating window in the early triassic period and reached its peek in the middle and end of triassic period , befor entering the highest maturity in the early and middle jurassic period , and had generating gas in the end of jurassic period 其中铁木里克组烃源岩厚度大、有机质丰度高、成熟度高，具有较高的生烃潜力，是伊犁盆地主要的烃源岩系，通过埋藏史及热演化史模拟，该套烃源岩于三叠纪早期已进入生烃门限，中晚三叠世达到生、排烃高峰，早中侏罗世进入高成熟阶段，侏罗纪末进入生气阶段。
Through the analysis of subsidence history in the north of western ordos basin , as a result of the terranes northward accretion and the successive collision of the baykala block in the middle triassic , the qiangtang block in the late triassic , the lhasa block in the middle jurassic , the gangdese block in the cretaceous and the subduction of izanagi plate in yanshanian period , the studied region became a intracontinental foreland basin from late triassic to cretaceous 摘要通过对鄂尔多斯盆地西缘北段沉降史的分析可知，晚三叠世白垩纪，由于中三叠世巴颜喀拉地体、晚三叠世羌塘地体、中晚侏罗世拉萨地块、白垩纪冈底斯地体连续向北增生、碰撞以及燕山期伊佐奈岐板块的俯冲，盆地西缘北段的响应显示为陆内前陆盆地的特征。
The palaeogeographic research indicate that the palaeogeographic outline of the study area recorded the evolution from a sedimentary basin in which the shallow - water carbonate platform sediments and deep - water terrigenous clastic submarine fan developed from southeast to northwest and northeast during the late triassic through a submarine sheet - like model composed of deep - water sandy turbidite and fine - grained turbidite during the early jurassic to a terrigenous clastic barrier coast during the middle and late jurassic and finally to the coal - bearing delta sediments during the late cretaceous 古地理分析表明，研究区晚三叠世古地理轮廓是一个从东南向西北和东北方向由浅水碳酸盐台地及深水陆层海底扇沉积共同发育的沉积盆地；早中侏罗世，演变成为一个由深水砂质浊积岩和细屑浊积岩组成的水下席状体沉积；进入中晚侏罗世，其古地理表现为一个陆屑浅海有障壁海岸；到了晚白垩世，研究区表现为以含煤沉积为特征的三角洲相沉积。
