冲积扇平原

冲积扇和冲积平原沉积体系。

And ( 5 ) alluvial fen and alluvial plain .

综合地质等各种资料，确定该区主要发育冲积扇、泛滥平原和扇三角洲等沉积体系。

The major depositional system are Fan , Floodplain , Fan delta .

新疆北疆平原荒漠区自冲积扇以下至冲积平原之间，绿洲外缘，存在一个不同于荒漠的绿洲&荒漠过渡带，其草地主要由低地草甸、盐化低地草甸、盐荒漠和部分土质荒漠组成。

In the plain desert area of Northern Xinjiang , there is an Oasis - desert transitional belt existed between the alluvial fan and alluvial plain .

通过对依兰矿区地质背景和老第三纪含煤地层沉积特征的综合分析，认为该区含煤段古地理类型主要为冲积扇扇三角洲平原滨浅湖环境。

Through an integrated analysis of geological setting and Paleogene coal-bearing strata sedimentary characteristics , the author considered that the coal-bearing section 's paleogeographic type in the area is mainly alluvial fan-fan-shaped delta plain-littoral shallow lake environment .