Holocene loess in the Himalayas piedmont of southeastern Nepal

Holocene loess in the Himalayas piedmont of southeastern Nepal

Loess, loess-like, sandy loess, and sandy-silty fluvial–aeolian deposits are intercalated to fluvial sediments and lie on a flat surface under intense agricultural land use in Bardibas, Mahottari district, central Nepal. To identify the depositional processes and provenance, we carried out geochemic...

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Main Authors: Latrubesse, Edgardo M., Nugraha, Abang Mansyursyah Surya
Other Authors: Earth Observatory of Singapore
Format: Article
Language:English
Published: 2024
Subjects:
Earth and Environmental Sciences
Loess
Holocene
Online Access:https://hdl.handle.net/10356/178837
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1788372024-07-09T15:36:37Z Holocene loess in the Himalayas piedmont of southeastern Nepal Latrubesse, Edgardo M. Nugraha, Abang Mansyursyah Surya Earth Observatory of Singapore Earth and Environmental Sciences Loess Holocene Loess, loess-like, sandy loess, and sandy-silty fluvial–aeolian deposits are intercalated to fluvial sediments and lie on a flat surface under intense agricultural land use in Bardibas, Mahottari district, central Nepal. To identify the depositional processes and provenance, we carried out geochemical, mineralogical, SEM, and grain-size analyses. Optically stimulated luminescence (OSL) dating shows the aeolian deposits are from the late Holocene (1.0–4.8 ka). Our results demonstrate that the loess and loess-like deposits (i) were dominantly sourced locally from deflation Quaternary sediments of the Terai Plain; (ii) are related to the composition of Siwalik rocks; and (iii) were deposited during dry periods of weak activity of the Indian Summer Monsoon. Ministry of Education (MOE) Nanyang Technological University National Research Foundation (NRF) Published version This study was supported by the National Research Foundation Singapore under its Singapore NRF Fellowship scheme (National Research Fellow Award No. NRF-NRFF2013-06), and by the EOS and the National Research Foundation Singapore and the Singapore Ministry of Education under the Research Centres of Excellence initiative. 2024-07-08T08:09:57Z 2024-07-08T08:09:57Z 2024 Journal Article Latrubesse, E. M. & Nugraha, A. M. S. (2024). Holocene loess in the Himalayas piedmont of southeastern Nepal. Geoscience Letters, 11(1). https://dx.doi.org/10.1186/s40562-024-00338-6 2196-4092 https://hdl.handle.net/10356/178837 10.1186/s40562-024-00338-6 2-s2.0-85194370094 1 11 en NRF-NRFF2013-06 Geoscience Letters © 2024 The Author(s). Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Earth and Environmental Sciences
Loess
Holocene
spellingShingle Earth and Environmental Sciences
Loess
Holocene
Latrubesse, Edgardo M.
Nugraha, Abang Mansyursyah Surya
Holocene loess in the Himalayas piedmont of southeastern Nepal
description Loess, loess-like, sandy loess, and sandy-silty fluvial–aeolian deposits are intercalated to fluvial sediments and lie on a flat surface under intense agricultural land use in Bardibas, Mahottari district, central Nepal. To identify the depositional processes and provenance, we carried out geochemical, mineralogical, SEM, and grain-size analyses. Optically stimulated luminescence (OSL) dating shows the aeolian deposits are from the late Holocene (1.0–4.8 ka). Our results demonstrate that the loess and loess-like deposits (i) were dominantly sourced locally from deflation Quaternary sediments of the Terai Plain; (ii) are related to the composition of Siwalik rocks; and (iii) were deposited during dry periods of weak activity of the Indian Summer Monsoon.
author2 Earth Observatory of Singapore
author_facet Earth Observatory of Singapore
Latrubesse, Edgardo M.
Nugraha, Abang Mansyursyah Surya
format Article
author Latrubesse, Edgardo M.
Nugraha, Abang Mansyursyah Surya
author_sort Latrubesse, Edgardo M.
title Holocene loess in the Himalayas piedmont of southeastern Nepal
title_short Holocene loess in the Himalayas piedmont of southeastern Nepal
title_full Holocene loess in the Himalayas piedmont of southeastern Nepal
title_fullStr Holocene loess in the Himalayas piedmont of southeastern Nepal
title_full_unstemmed Holocene loess in the Himalayas piedmont of southeastern Nepal
title_sort holocene loess in the himalayas piedmont of southeastern nepal
publishDate 2024
url https://hdl.handle.net/10356/178837
_version_ 1814047036335456256

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