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Late Pleistocene - Holocene tectonic activities in the frontal part of NE Himalaya between Siang and Dibang river valleys, Arunachal Pradesh, India

Auteur(s) et Affiliation(s)

LUIREI, K.
Wadia Inst. of Himalayan Geology, Dehradun, Inde
BHAKUNI, S.S.
Wadia Inst. of Himalayan Geology, Dehradun, Inde
Wadia Inst. of Himalayan Geology, Dehradun, Inde
SURESH, N.
Wadia Inst. of Himalayan Geology, Dehradun, Inde


Description :
This region, drained by major river system, represents an ideal environment for fluvial fan and terrace formation. On the basis of analysis of Quaternary landforms the faults that were active during the Late Pleistocene-Holocene were identified. Imprints of active tectonics on the landforms are discernible in the form of tilted fans, colluvial deposits and terraces, truncation of toe of fan, linear fault scarps and thrusting of Siwalik rocks over the colluvial deposits. OSL dates for fans and terrace deposits indicate tectonic activities between 8 and 56 ka. It is showed that geomorphic evidence, chronology of depositional landforms, deformation of Quaternary landforms and soft-sediment deformation structures provide baseline information about neotectonic activity in the region.


Type de document :
Article de périodique

Source :
Zeitschrift für Geomorphologie, issn : 0372-8854, 2012, vol. 56, n°. 4, p. 477-493, nombre de pages : 17, Références bibliographiques : 3 p.

Date :
2012

Editeur :
Pays édition : Allemagne, Stuttgart, Gebruder Borntraeger

Langue :
Anglais
Droits :
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