Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 0037-0738 |
EISSN | 1879-0968 |
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 |
推荐引用方式 GB/T 7714 | 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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