The importance of accurate field observations in geological and exploratory investigations

Jalil ghalamghash
Professor assistant, Research Institute of Earth Sciences, Geological Survey of Iran,
ghalamghash@yahoo.com

Country construction and do huge civil projects need valid and precise geological data. For this reason, government pays a lot of money for large scale geological mapping every year. Nowadays, enlarge small scale maps and present with larger scale is a serious problem in procedure basal information. This kind of maps has no engineering value because they don't have new litholgical, mining and structural data. However using new satellite images, new instruments and update lab studies are important and necessary in geological mapping but dense field traverse is alone way for producing new geological data in standard mapping. In other words large scale evaluate either by denser data or more data in same area.