پديد آورندگان :
اميني ، آرش نويسنده , , جمال قدوسي، مترجم ,
كليدواژه :
روش توصيفي ويلز , هوازدگي سنگ ها , Weathering , Viles method , Shemshak formation , Weathering scale , Ziarat watershed basin
چكيده لاتين :
Weathering is one of the important initial processes for erosion, formation of clastic sediments and formation of detrital sedimentary rocks. We have not any out standing study in macro and micro scale in Iran. On the other hand, in the limited study related to weathering, time and place scale, effective factors and mechanism are not considered very much. In this article we rewiev many usual methods for classification and evaluation based on Viles, professor of Oxford University, supposed method. We consider geologic, climatic, hydrologic, and organic factors in the creation of weathering process, time and place scale in the fonnation of the weathering features of sandstone in Shemshak formation rocks in Ziarat watershed basin. This method is very useful in weathering of rocks but we have some limitations that one of them is the use of modern techniques and equipments for the study of details of weathering in different scale in our country. Results shown that we have at least 6 types of 11 types of weathering features in Viles classification method with different variation in study area. Two types completely weathering and very weathering rocks with weathering degree 4 and 5, include 25 and 32 percent of the frequency of 6 studying groups, respectively, in compare with rocks weathering in engineering geology method cover the half of the sandstone of Shemshak in Ziarat watershed basin. So, with test and apply Viles method in different climate and rock groups, we can adopt it in Iran.
