Pleistocene-Holocene crustal deformation in the far-Western Himalaya

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Authors

Saptarshi Dey , Naveen Chauhan, Debashis Nath, Niklas Schaaf, Rasmus Thiede, Vikrant Jain

Abstract

We present new Late Pleistocene-Holocene shortening rates across the frontal fold-and-thrust belt, namely as, the Sub-Himalaya (SH) from the far-western Himalayan sector of Jammu. OSL-dated offset/ folded fluvial strath terraces suggest that the intraplate convergence is partitioned among several active structures in the SH. Estimated cumulative Late Pleistocene- Holocene shortening rate in the SH is ~9.5±1.3 mm/yr, which is ~70–75% of the measured geodetic convergence rates. Our study invokes the existence of a ~350–400 km-long out-of-sequence fault-boundary within the SH which accommodates ~5.3±2.3 mm/yr shortening since Late Pleistocene-Holocene. Our study also highlights that ongoing crustal shortening is not accommodated only at the toe of the Himalayan wedge.

DOI

https://doi.org/10.31223/X5GG77

Subjects

Earth Sciences, Physical Sciences and Mathematics

Keywords

Himalaya, crustal shortening, terrace, out-of-sequence faulting, out-of-sequence fault

Dates

Published: 2021-06-25 03:06

Last Updated: 2021-06-25 10:06

License

CC BY Attribution 4.0 International

Additional Metadata

Conflict of interest statement:
None

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