Arid
DOI10.1016/j.sedgeo.2014.05.001
Distinguishing different sedimentary facies in a deltaic system
Purkait, Barendra1; Das Majumdar, Dipanjan2,3
通讯作者Purkait, Barendra
来源期刊SEDIMENTARY GEOLOGY
ISSN0037-0738
EISSN1879-0968
出版年2014
卷号308页码:53-62
英文摘要

An attempt has been made to differentiate sedimentary fades in a modern deltaic system by means of grain-size characteristics of the Ganga alluvial plain of West Bengal, India. Three main energy environments (marine, mixed and riverine) comprising the delta were considered. Sand samples were collected from rivers (both tidal and non-tidal), coastal dunes, beaches and tidal flats of the deltaic plain. The grain-size distribution patterns were compared with the two model distributions of log-normal and log-skew-Laplace. Different sedimentary facies were identified by discriminant functions. The analytical results indicate that the energy gradient of the different sedimentary fades of the deltaic system is well reflected by the grain-size characteristics of the individual facies. While critically analyzing the role of different textural parameters in discriminating the individual fades associations, it is observed that the mean size, alpha (slope of coarser fractions of Laplace model) and skewness have greater potential to distinguish different sedimentary facies of the deltaic system. The results of discriminant analysis might be applicable to paleo-environmental interpretation of a deltaic system by distinguishing the individual facies associations. (C) 2014 Elsevier B.V. All rights reserved.


英文关键词Sedimentary facies Grain-size distribution Log-normal Log-skew-Laplace Discriminant functions
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000339142600005
WOS关键词GRAIN-SIZE DISTRIBUTION ; PARTICLE-SIZE ; DEPOSITIONAL-ENVIRONMENTS ; STATISTICAL PARAMETERS ; DISTRIBUTION PATTERNS ; USRI RIVER ; DUNE SANDS ; DISTRIBUTIONS ; DESERT ; BEACH
WOS类目Geology
WOS研究方向Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/184939
作者单位1.Univ Calcutta, Dept Geol, Kolkata 700035, India;
2.Vidyasagar Univ, Dept Remote Sensing, Midnapore 721102, W Bengal, India;
3.Vidyasagar Univ, GIS, Midnapore 721102, W Bengal, India
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Purkait, Barendra,Das Majumdar, Dipanjan. Distinguishing different sedimentary facies in a deltaic system[J],2014,308:53-62.
APA Purkait, Barendra,&Das Majumdar, Dipanjan.(2014).Distinguishing different sedimentary facies in a deltaic system.SEDIMENTARY GEOLOGY,308,53-62.
MLA Purkait, Barendra,et al."Distinguishing different sedimentary facies in a deltaic system".SEDIMENTARY GEOLOGY 308(2014):53-62.
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