Preparing and Drawing Maps of Geomorphology of Western Gilan Province With The Scale 1: 25,000 A Case Study of The Range of Astara - Hawiq

Most of the settlements of Guilan province have certain natural constraints in physical development. In terms of geomorphology, these centers, in their physical development, have problems such as earthquakes, groundwater surface condition, forward and backward on the shores of the sea, flood, range of motion, etc. In many environmental management issues and land use, the most important and useful help of geomorphologist is displaying shapes and surface effects on the geomorphology maps, since the establishment and creation of settlements, above all, depend on normal conditions (geology, topographic, soils, hydrology, climate) and geographic location. Therefore, geomorphologic phenomena have a significant impact on the emergence, formation, distribution, and physical development of urban and rural settlements.
This article is part of a research project under the same title (Preparing Geomorphologic Map of the West of Guilan with 1:25000 scale) which was conducted by the author in the West part of Guilan province; the results show that geomorphologic phenomena have an important role in the physical expansion of the settlements in the West of the province, some of which are the Caspian coastal sand dunes, steel wetlands (South West Astara), the Marine barracks around Choubar and Haviq, Global faults of Astara, and alluvial materials of Lavandevil, Choubar, and Haviq rivers, and range of processes, create some problems for the physical development of the settlements of the research area. Research method is based on form and process analysis on 1:25000 topographic maps, geology 1:100,000, aerial photographs, and, finally, at some stages of field visits, all the data on the land was evaluated. It is hoped that this work will provide a basis so that it would be possible to prepare these maps in broad national coverage for all the provinces, and give the report to the administrative organizations.