Accordingly , the dune deposits of the section since 150 ka bp can be divided into 38 alternate evolvement processes of desert and inter - desert periods , which accord with the sedimentary cycles of the section . it is further suggested from now climate in the area that the 38 inter - succession processes of dune deposits and fluvio - lacustrine or palaeosols in past 150 ka actually result from the alternate evolvement of the ancient east asia winter and summer monsoons in the mu us desert during the long geologic times 从这一认识出发，将米浪沟湾剖面150ka以来的砂丘堆积划分为38个旋回的沙漠期与间沙漠期交替演化过程，并认为，该剖面自那时以来发生的38个砂丘沉积与河湖相或古土壤的演替过程，实际上是这一长期地质时代毛乌素沙漠受东亚冬夏古代季风影响交替演化所致。
Mz , a , sk , kg and sc / d ( ratio of the sum of silt and clay to sand ) of fluvio - lacustrine , palaeosols and aeolian sands constitute an interlocking , multi - fluctuation process curve with peak and valle y values : the < & value of mz , o and sk values often increase accordingly from aeolian sands to its overlying fluvio - lacustrine facies or / and palaesols , the kg value heightens , too , and the sc / d value also basically consists with its change steps 河湖相和古土壤与风成砂的mz 、 、 sk 、 kg以及sc d (粉砂粘土之和与砂的比值)构成一峰谷交替、犬牙交错的锯齿状多波动过程线：常常是由风成砂至上覆河湖相或和古土壤， mz的值、 、 sk值相应增大， kg相应增高， sc d值亦与之变化步骤基本一致。
Erlian basin is a rift lacustrine basin developed on the hercynian geosyncline folded base in early cretaceous , is featured by simple sedimentary feature , depositional cycle , small lacustrine transgressive , dry climate , salinization lacustrine water and multi - and - near sources 摘要二连盆地是在海西期地槽褶皱基底上发育起来的早白垩世断陷湖泊群，具有湖盆湖浸规模较小、气候条件干燥、湖水咸化、沉积旋回单一，多物源、近物源和粗碎屑等沉积特征，以及发育岩性地层油气藏为主的油气分布特点。
( 5 ) by analyzing the terrace in the lacustrine sediment of the ancient barrier lake , diexi , minjiang river , forming of the terrace is not only because of the intermittent arising of the tectonic movement , but also because of descend of the eroding normal covering resulting from destroying of the barrier lake ( 5 )通过对岷江叠溪古堰塞湖湖相沉积中的河流阶地分析可知，阶地的形成不仅仅是由于新构造运动的间歇性抬升作用，由于堰塞湖的溃决引起洪水下泄，导致河流侵蚀基准面的下降也可以形成阶地。
