We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Decoding the Late Pleistocene-Holocene Terrace Evolution along the Main Frontal Thrust Zone, Northeastern Himalayas, India: Insights from Tectonic Geomorphology, Sedimentology, and Optical Dating.
- Authors
Tandon, Aashna; Prizomwala, S. P.
- Abstract
Fluvial archives are the best preserved and provide valuable means of obtaining information pertaining to climate and tectonic deformation of an area. The present study is an attempt to reconstruct the landform evolution history in the northeastern Himalayan region of India. Based on field investigation, tectonogeomorphic mapping, and OSL dating, strath and various levels of cut-and-fill terraces were investigated along the mountain front. Optically stimulated luminescence ages of the terrace sequences suggest that the valley incision occurred in three phases, at ∼23 ka, ∼14 ka and ∼9–3 ka and one phase of aggradation was also identified at ∼ 7 ka. The strath terraces suggest two major episodes of tectonic uplift in the region around ∼ 8 ka and ∼ 6 ka. This yields an uplift rate of 0.4 and 0.9 mm/yr. The result from the study suggested that the rapid rejuvenation along the mountain front led to the formation of the strath terraces with enhanced incision of the fluvial terrace and influenced the sedimentary architecture of valley fill sequences.
- Subjects
HIMALAYA Mountains; INDIA; MORPHOTECTONICS; AGGRADATION &; degradation; OPTICALLY stimulated luminescence dating; OPTICALLY stimulated luminescence; TERRACING; THRUST; SEDIMENTOLOGY
- Publication
Journal of the Geological Society of India, 2023, Vol 99, Issue 8, p1063
- ISSN
0016-7622
- Publication type
Article
- DOI
10.1007/s12594-023-2432-8