In dawan area , the top and the middle strata of the shahejie formation also developed a set of fan - delta sediment similar to the bottom of the shahejie formation , but the scale is significantly smaller 大湾地区的沙三上、中也发育了一套与之相类似的扇三角洲沉积，但其规模则相对明显要小。
Fan delta sediment is an important class of reservoir sand and has been a hot topic for reservoir research by scholars recently , this is simply because abundant oil and gas resources were discovered in it 扇三角洲沉积是一类重要的储层砂体，在其中发现了丰富的油气资源，近年来成为储层研究的热点。
Near shore sub - aqueous fans , fan delta and delta occurred on the footwall of the hainan marginal fault , whereas turbidity fans developed in the deep water area and the footwall of the hainan no . 2 fault 海南边界断层下降盘分别发育近岸水下扇、扇三角洲和三角洲沉积。海南2号断层下降盘及深水区域浊积扇沉积发育。
2 . by using seismic stratigraphy to lacustrine environment , sedimentary frameworks of mahu depression have been studied . results indicated that fan - delta were the dominant facies of permian in mahu depression 2 、运用震地层学理论对玛湖凹陷沉积条件进行了研究，结果认为，玛湖凹陷二叠系发育以扇三角洲为主的沉积体系。
In the basin , there were some different sedimentary systems - river sedimentary system , lake sedimentary system , the delta sedimentary system , fan delta sedimentary system and alluvial fan sedimentary system 三塘湖盆地沉积地层中发育不同的沉积体系?河流沉积体系、湖泊沉积体系、三角洲沉积体系、扇三角洲沉积体系和冲积扇沉积体系。
( 4 ) this paper shows that the urassic badaowan formation in north part of the hami depression possesses a depositumal system of fan and fan delta and shallow lake fades with the analysis of seismic stratigraphy 通过地震地层学分析和储层横向预测研究，首次提出四道沟地区侏罗系八道湾组早期低水位时期沉积了由北向南的冲积扇?扇三角洲?湖泊沉积体系。
We suggest that the favorable reservoir facies within ganchaigou formation in west qaidam basin are delta front facies , fan - delta front facies , dam - and - beach facies of the littoral and shallow lake , lacustrine floor fan facies and carbonates facies 强调了三角洲相前缘、扇三角洲相前缘、滨浅湖滩坝、湖底扇以及碳酸盐岩沉积是西部地区干柴沟组有利的储集岩相带。
By looking into the cores , analyzing of granularity and ichno - fossils , the paper has ascertained the basin as a normal fluvial delta deposital system , which amends the former view that believed the basin should be a fan - delta system 通过本区大量的岩心观察、粒度分析、遗迹化石分析，修改了前人认定的其为扇三角洲沉积体系的观点，将其确定为正常的河流三角洲体系。
The distribution of depositional facies in bonan sag is very complex , which include five depositional systems , such as salt lake of deep water , transgressive fan delta , proximal turbidite fan , slump turbidite fan , distal turbidite fan 洼陷内的沉积相带展布比较复杂，发育有深水盐湖、水进型扇三角洲、近岸浊积扇、滑塌浊积扇及带供给水道的远岸浊积扇等5种沉积体系。
It was mainly river sedimentary system in early jurassic period , lake sedimentary system and delta sedimentary system in middle - later jurassic period and there are fan delta sedimentary system and alluvial fan sedimentary system in the edge of basin 早侏罗世以河流沉积为主，中晚侏罗世整个盆地以湖泊沉积体系和三角洲沉积体系，边缘区出现扇三角洲沉积体系和冲积扇沉积体系。
