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Petrography and detrital zircon U-Ph dating of the Neogene sandstones in the Sylhet Trough, Bengal Basin (Bangladesh): Implications for Provenance
Khanam, Farida1; Rahman, M. Julleh Jalalur2; Abdullah, Rashed2; Xiao, Wenjiao3; Alam, Mustafa4
2020
Source PublicationHIMALAYAN GEOLOGY
ISSN0971-8966
Volume41Issue:2Pages:133-144
AbstractThe Sylhet Trough is located in the northeastern part of the Indian plate, was developed as a part of a foreland basin (i.e., the Bengal Basin) in response to the uplift of the mountain belts of Himalaya and Indo-Burman Ranges and accommodated one of the thickest sedimentary piles. The present study aims to understand the possible provenance of the Neogene sediments in the trough based on results from detrital zircon U-Pb dating and detrital mode of sandstone petrography. Provenance analysis based on the modal composition of these Neogene sediments indicates a 'recycled orogen', suggesting significant reworking and recycling of the detrital sediments during the mountain building process. The detrital zircon age spectra of the Miocene Surma Group and Plio-Pleistone Dupitila sediments from the Sylhet Trough suggest that the sediments were mostly derived from three Himalayan litho-tectonic units; the Tethyan Himalaya, the Higher Himalaya and the Lesser Himalaya. However, younger detrital zircons (<200 Ma) from the Sylhet Trough are aged similar to 143-32 Ma, are identical to similar to 85-50 Ma Gangdese batholith, located north of the Himalayan belt. Such observation suggests that the sediments of the Sylhet Trough are sourced from the Late Cretaceous-Eocene Gangdese Trans Himalayan Batholith that includes the Bomi-Chayu, the Dianxi-Burma and the Northern Magmatic Belt (i.e., the Northern Lhasa block).
KeywordProvenance Neogene sediments Detrital Zircon U-Pb Dating Sandstone Petrography Sylhet Trough Bengal Basin
Funding Organization'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh ; 'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh ; 'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh ; 'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh ; 'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh ; 'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh ; 'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh ; 'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh
WOS KeywordSURMA GROUP ; PB AGE ; SEDIMENTS ; TECTONICS ; BRAHMAPUTRA ; HISTORY ; GEOCHEMISTRY ; CONSTRAINTS ; EVOLUTION ; COLLISION
Language英语
Funding Project'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh
Funding Organization'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh ; 'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh ; 'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh ; 'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh ; 'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh ; 'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh ; 'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh ; 'Banggabandu Fellowship Program', Ministry of Science and Technology, Government of the People's Republic of Bangladesh
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000550807800002
PublisherWADIA INST HIMALAYAN GEOLOGY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/97565
Collection岩石圈演化国家重点实验室
Corresponding AuthorRahman, M. Julleh Jalalur
Affiliation1.Bangladesh Petr Explorat & Prod Co Ltd BAPEX, Dhaka, Bangladesh
2.Jahangirnagar Univ, Dept Geol Sci, Dhaka, Bangladesh
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
4.Dhaka Univ, Dept Geol, Dhaka, Bangladesh
Recommended Citation
GB/T 7714
Khanam, Farida,Rahman, M. Julleh Jalalur,Abdullah, Rashed,et al. Petrography and detrital zircon U-Ph dating of the Neogene sandstones in the Sylhet Trough, Bengal Basin (Bangladesh): Implications for Provenance[J]. HIMALAYAN GEOLOGY,2020,41(2):133-144.
APA Khanam, Farida,Rahman, M. Julleh Jalalur,Abdullah, Rashed,Xiao, Wenjiao,&Alam, Mustafa.(2020).Petrography and detrital zircon U-Ph dating of the Neogene sandstones in the Sylhet Trough, Bengal Basin (Bangladesh): Implications for Provenance.HIMALAYAN GEOLOGY,41(2),133-144.
MLA Khanam, Farida,et al."Petrography and detrital zircon U-Ph dating of the Neogene sandstones in the Sylhet Trough, Bengal Basin (Bangladesh): Implications for Provenance".HIMALAYAN GEOLOGY 41.2(2020):133-144.
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