A new 'superassemblage' model explaining proximal-to-distal and lateral facies changes in fluvial environments,based on the Proterozoic Sanjauli Formation(Lesser Himalaya,India)  

作　　者：Ananya Mukhopadhyay Priyanka Mazumdar A.J. (Tom) van Loon 

机构地区：[1]Department of Earth Sciences, Indian Institute of Engineering Science & Technology, Shibpur, Howrah, West Bengal 711103, India [2]Geocom Consulting, Valle del Portet 17, 03726 Benitachell, Spain

出　　处：《Journal of Palaeogeography》2016年第4期391-408,共18页古地理学报（英文版）

基　　金：the Oil and Natural Gas Corporation,India for sanctioning the project and for providing financial support

摘　　要：Facies analysis of fluvial deposits of the Proterozoic Sanjauli Formation in the Lesser Himalaya was combined with an architectural analysis. On this basis, a model was developed that may be applied to other fluvial systems as well, whether old or recent. The new model, which might be considered as an assemblage of previous models, explains lateral variations in architecture and facies but is not in all respects consistent with the standard fluvial models. The Sanjauli fluvial model is unique in that it deals with lateral facies variations due to shifts of the base-level along with fluctuations in accommodation space owing to changes in palaeoclimate.Facies analysis of fluvial deposits of the Proterozoic Sanjauli Formation in the Lesser Himalaya was combined with an architectural analysis. On this basis, a model was developed that may be applied to other fluvial systems as well, whether old or recent. The new model, which might be considered as an assemblage of previous models, explains lateral variations in architecture and facies but is not in all respects consistent with the standard fluvial models. The Sanjauli fluvial model is unique in that it deals with lateral facies variations due to shifts of the base-level along with fluctuations in accommodation space owing to changes in palaeoclimate.

关 键 词：Ftuvial model Braided river Sanjauli Formation Simta Basin PROTEROZOIC Lesser Himalaya INDIA 

分 类 号：P542[天文地球—构造地质学] O414[天文地球—地质学]