Contribution
Geomorphological Studies in the Kashmar Region (NE Iran)
Giessner, K.; Hagedorn, H.; Sarvati, M. R.
Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen Band 168 Heft 2-3 (1984), p. 545 - 557
9 références bibliographiques
publié: Jun 28, 1984
publication en ligne: Jul 27, 2018
DOI: 10.1127/njgpa/168/1984/545
ArtNo. ESP155016802025, Prix: 29.00 €
Abstract
The geomorphological investigations concentrated on the Kashmar depression, the northern part of which is characterized by the piedmont plain and alluvial fan landforms extending southward from the Kuh-e-Sorgh mountains system. A few morphogenetic and morphodynamic key areas of this piedmont system were studied in detail. These are the alluvial fan of Irajabad, the river terrace systems along the Kal-e-Sheshtaraz River, and the Doruneh fault. The geomorphological field-work has shown that the tectonically formed Kashmar depression was subjected to widespread alluvial fan deposition during the Quaternary. This sedimentation was to large extent climatically induced. Deposition was followed by repeated cycles or erosion and deposition along the major rivers, thereby forming fluvial terraces. These cycles were primarily governed by climatic impulses, but were modified by tectonic movements. Displacements of alluvial fan deposits and of river terraces as well as rivercourse manges provide evidence for movements along the Doruneh fault mainly after the main depositional period, although the fault has most likely been active since the initial formation of the depression.
Mots-clefs
Intramontane basin • pediments • glacis • alluvial fans • river terraces • Quaternary • fluvial erosion • sedimentary cycles • paleoclimate • neoteconics fault • Iran • Kashmar