Morphotectonic Analysis of Nar Anticline (NW Lamerd)

Subject Areas : Geopolitic

سید احمد Alavi ¹ , رضا Derakhshani ² , علی Haghshenas ³

1 - ندارد
2 - ندارد
3 - ندارد

Received: 2015-01-12 Accepted : 2015-01-12 Published : 2007-01-21

Keywords: Morphotectonic indices, Isobase lines, Lineaments, Deformation, Basement fault,

Abstract :

The study area in terms of geological division is located in Zagros foldthrust belt. Inthe present study, the following quantitative and qualitative methods ofgeomorphology and structural geology were used together. Aerial photos, satelliteimages, geological and topographical maps were studied and interpreted. Severalmorphometric indices including facet%, sinuosity of mountain front (Smf), V ratio andratio of valley floor width to valley height (Vf) were calculated. Isobase line map aswell as lineament map and three maps of isofracture anomaly, lineament densityanomaly and lineament intersection intensity anomaly were plotted. Based on theabove mentioned analyses and presence of special morphotectonic features such as:linear valley, deflected streams, fault scarps, water springs, elongated alluvial fans anddrainage basins, tectonically the study area is too active. Due to the deformation of Naranticline (Z shaped), it may be attributed to the presence of a N-S basement or blindfault. This fault can also make different anomalies in drainage patterns, streamdirections and lineaments.