冲积扇沉积

结果认为：该区下第三系属于断陷湖盆沉积体系，主要发育有扇三角洲沉积、深湖浊流沉积和粒屑灰岩沉积，早期还发育冲积扇沉积；

The result indicates that the Palaeogene of this area belongs to faulted lake - basin sedimentary system . Mainly developed are fan - delta , deep lake turbidite and calcirudite deposit , and also alluvial fan deposit in early period .

煤系沉积初期，以河流及冲积扇沉积为主，沉积中期则以湖泊三角洲沉积为主，晚期以湖泊环境为主，延安组各煤层大多是在湖泊三角洲平原上泥沼化形成的。

During the initial stage of coal measures deposition , was mainly alluvial fan deposit , middle stage lake delta deposit and later stage lacustrine deposit . Most coal seams in Yanan Formation were formed in peaty moors on lake delta plain .

黄骅坳陷孔南地区孔店组冲积扇沉积特征及地质意义

Alluvial fan deposits in the Kongdian Formation , Huanghua depression

民和盆地上侏罗统湿型冲积扇沉积

A humid alluvial fan from Upper Jurassic in Minhe basin , northwest China

从古新世到中新世，柴达木盆地北缘经历了由大规模冲积扇沉积到辫状河沉积的演化过程。

From Paleocene to Miocene , the sedimentary facies evolved from the extensive alluvial fan to the braided fluvial river environment .

研究区的沉积体系类型包括低位侵蚀沟谷充填沉积体系、湖泊沉积体系、下切水道沉积体系、湖底扇沉积体系、三角洲沉积体系以及冲积扇沉积体系。

The types of sedimentary system comprised incised river valley filling , lacustrine , incised canyon , sublacustrine fan , delta and alluvial fan .

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。

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 .

黑石渡组属于向上变细层序，早期为冲积扇沉积，中期为洪泛平原、决口扇和扇三角洲沉积，晚期为深湖浊流沉积。

HsdF developed the fining upward sequences , and alluvial fan in the early stage , floodplain and crevasse splay and fan delta in the middle stage , and lacustrine turbidites in the late stage .

从下到上可划分为五种沉积体系：即冲积扇沉积体系、扇前湿地与低弯度河沉积体系、冲积-湖泊三角洲沉积体系、湖泊沉积体系和湖泊辫状三角洲沉积体系。

Five sedimentary systems can be divided from bottom to top , they are alluvial fan system , frontal fan wetland and slack meandering river system , alluvial-lake delta system , lake and braided delta ones .

从盆地边缘到盆地中心，沉积相由冲积扇沉积逐渐变为扇三角洲或滨湖、浅湖、半深湖相沉积；

In the basin , from the margin to the center , the facies is developed from alluvial fans , gradually to fan deltas or lakefront facies , shallow water lake facies , half-deep water lake facies ;

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。

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 .

本文通过岩相特征、粘土矿物分布、早期成岩矿物组合、微量元素等特征的综合分析，认为民和盆地上侏罗统下部为一较典型的湿型冲积扇沉积。

Based on the characteristics of rock facies , occurrence of clay minerals and trace elements in mudstones , and early diagenetic mineral assemblage in sandstones , it is indicated that a typical humid alluvial fan in the Upper Jurassic in Minhe basin .

研究表明松辽盆地早白垩世主要发育火山岩、河流、滨浅湖、三角洲和冲积扇沉积，晚白垩世主要发育深湖&半深湖、滨浅湖、三角洲、河流和冲积扇沉积。

The research shows that the basin developed volcanic rocks , rivers , shallow lake , delta and alluvial fan deposits in Early Cretaceous , and semi-deep to deep lake , shallow lake , delta , river and alluvial fan deposits in late Cretaceous .

中段为重力滑塌岩块及角砾岩相-构造活动型冲积扇相沉积；

The middle member is the gravity slide collapse block and breccia facies-structural movement type alluvial fan facies sediments .

滦河冲积扇结构和沉积环境

Structures and sedimentary environments of the alluvial fan of the Luan River

经历了由冲积扇-河流沉积体系向上演化为湖泊沉积体系，再逐渐演化为冲积扇-河流沉积体系的过程；

The alluvial fan-river sedimentary system evolved upward into a lake sedimentary system and then again gradually evolved into an alluvial fan-river sedimentary system .

老君山组广泛分布在古祁连山的山前和山间盆地，主要为冲积扇粗碎屑沉积。

The Laojunshan Formation was dispersed over the piedmont and intermountainous basin along the PaleoQilian orogenic belt and is composed of coarse clastic rocks .

冲积扇和冲积平原沉积体系。

And ( 5 ) alluvial fen and alluvial plain .

论滦河冲积扇&三角洲沉积体系

On the Luanhe River alluvial fan - delta complex