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Detrital zircon U-Pb ages, Hf isotopic constraints, and trace element analysis of Upper Cretaceous-Neogene sedimentary units in the Western Nepal Himalaya: Implications for provenance changes and India-Asia collision
Baral, U (Baral, Upendra)1,2,3; Lin, D (Lin, Ding)1,3; Chamlagain, D (Chamlagain, Deepak)4; Qasim, M (Qasim, Muhammad)1,2,5; Paudayal, KN (Paudayal, Khum N.)6; Neupane, B (Neupane, Bhupati)1,2
Source PublicationGEOLOGICAL JOURNAL
2019
Volume54Issue:1Pages:120-132
DOI10.1002/gj.3163
Abstract

The present study integrates detrital zircon U-Pb-Hf isotopic analysis from 13 sandstone samples from an Upper Cretaceous-Miocene sedimentary sequence in Nepal Himalaya to determine their provenance. These sequences constrain a shifting of provenance from south to north. The U-Pb ages from Upper Cretaceous-Palaeocene strata (Amile Formation) mainly cluster between similar to 1,860 and 1,400 Ma with a peak at similar to 1,630 Ma and an absence of grains younger than the Palaeoproterozoic (1,400 Ma) age. The detritus yielded positive detrital zircon epsilon(Hf) (t) values (as high as +10). However, the detrital zircon U-Pb ages from Eocene-Miocene sequence cluster at similar to 500-650, similar to 700-900, similar to 1,600-1,850, and similar to 2,500 Ma, and in addition, they have both positive and negative epsilon(Hf) (t) values (+11 to -25). This finding further elucidates that the detritus in the Amile Formation was entirely sourced from India, which changed following the time of the Bhainskati Formation deposition, to a mixture of both Asian and Indian affinities (the Himalayan region). This change in source region marks the possible time of the India-Asia collision during this transition phase, that is, Late Palaeocene-Earliest Eocene.

Subject AreaGeosciences
WOS IDWOS:000455038100008
Language英语
Indexed BySCI
KeywordForeland Basin Sediments Karnali River Section Fold-thrust Belt Tectonic Evolution Southern Tibet Exhumation History Tethys Himalaya Northern India Nw India Geochronology
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
Cooperation Status国际
ISSN0072-1050
Department大陆碰撞与高原隆升
URL查看原文
PublisherWILEY
SubtypeArticle
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9456
Collection图书馆
Corresponding AuthorBaral, U (Baral, Upendra)
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China;
2.Univ Chinese Acad Sci, Beijing, Peoples R China;
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China;
4.Tribhuvan Univ, Dept Geol, Tri Chandra Multiple Coll, Kirtipur, Nepal;
5.COMSATS Inst Informat Technol, Dept Earth Sci, Abbottabad, Pakistan;
6.[Paudayal, Khum N.] Tribhuvan Univ, Cent Dept Geol, Kirtipur, Nepal.
Recommended Citation
GB/T 7714
Baral, U ,Lin, D ,Chamlagain, D ,et al. Detrital zircon U-Pb ages, Hf isotopic constraints, and trace element analysis of Upper Cretaceous-Neogene sedimentary units in the Western Nepal Himalaya: Implications for provenance changes and India-Asia collision[J]. GEOLOGICAL JOURNAL,2019,54(1):120-132.
APA Baral, U ,Lin, D ,Chamlagain, D ,Qasim, M ,Paudayal, KN ,&Neupane, B .(2019).Detrital zircon U-Pb ages, Hf isotopic constraints, and trace element analysis of Upper Cretaceous-Neogene sedimentary units in the Western Nepal Himalaya: Implications for provenance changes and India-Asia collision.GEOLOGICAL JOURNAL,54(1),120-132.
MLA Baral, U ,et al."Detrital zircon U-Pb ages, Hf isotopic constraints, and trace element analysis of Upper Cretaceous-Neogene sedimentary units in the Western Nepal Himalaya: Implications for provenance changes and India-Asia collision".GEOLOGICAL JOURNAL 54.1(2019):120-132.
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