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Holocene loess in the Himalayas piedmont of southeastern Nepal.
- Source :
- Geoscience Letters; 5/23/2024, Vol. 11 Issue 1, p1-15, 15p
- Publication Year :
- 2024
-
Abstract
- 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. [ABSTRACT FROM AUTHOR]
- Subjects :
- OPTICALLY stimulated luminescence
LOESS
HOLOCENE Epoch
FARMS
Subjects
Details
- Language :
- English
- ISSN :
- 21964092
- Volume :
- 11
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Geoscience Letters
- Publication Type :
- Academic Journal
- Accession number :
- 177464866
- Full Text :
- https://doi.org/10.1186/s40562-024-00338-6