â â â  parsian alluvial fan system is a part of asyab-kharabeh fluvial system that response it to quaternary climate changes is the main goal of this study. for this aim, climatic proxies and traces in alluvial fan structure were investigated base d o n four categories: aggradation and degradation phases, debris flows, size changes in deposited materials and formation of alluvial fan tufas. pri...

introduction interaction between internal and external processes of the earth during time plays an important role in formation and landforms transformation. we can identify course of their process changes with landform survey. in the middle parts of iran, there are several geomorphologic evidence of arid and rainy climate changes. playaes and lakes or generally internal holes had an important r...

introduction iran forms a relatively compact zone of active continental deformation resulted from the northward collision of arabia with eurasia during late cenozoic times, which is continuing to the present-day at a rate of 25 mm/yrs (from gps data). evidences of active tectonic in different parts of iran, has been studied and identified. the arid climate, low rates of erosion, and minimal veg...

Geologic and chronometric studies of alluvial fan sequences in south-central Australia provide insights into the roles of tectonics and climate in continental landscape evolution.The most voluminous alluvial fans in the Flinders Ranges region have developed adjacent to catchments uplifted by Plio-Quaternary reverse faults, implying that young tectonic activity has exerted a ¢rstorder control on...

soil erosion is the most important threat to the soil and water resources among the soil degradation processes in arid and semi-arid regions. this study was conducted in shirin-darreh basin, a semi-arid region in north-eastern iran, to evaluate the performance of erosion potential method (epm) and hydro-physical method (csy) in generating erosion potential and sediment load maps via geographic ...

a r t i c l e i n f o Keywords: Colorado River basalt cosmogenic 3 He surface exposure ages climate change desert pavement desert alluvial fans southwest USA geomorphology Plio-Pleistocene deposits of the Lower Colorado River (LCR) and tributary alluvial fans emanating from the Black Mountains near Golden Shores, Arizona record six cycles of Late Cenozoic aggradation and incision of the LCR and...

This volume presents a series of papers on the geomorphology, sedimentology and dynamics of alluvial fans, selected from those presented at the 'Alluvial Fans' Conference held in Sorbas, SE Spain in June 2003. The conference was sponsored primarily by the British Geomorphological Research Group and the British Sedimentological Research Group, both organizations affiliated to the Geological Soci...