Abstract
Magnetic susceptibility is one of the basic physical properties of rocks and sediments, and is easily measured in room and in the field. Magnetic susceptibility is, therefore, used for a variety of survey of engineering geology: recognition of rocks and their origins based on difference in the value of magnetic susceptibility, mining and searching ore minerals, rapid recognition of the general features of boring-core samples, estimation of physical properties of rock masses, evaluation of landslide deposits, estimation of denudation rates of mountain areas, recognition of tephras which are not recognizable by naked eyes, characterization of river sediments, applications for environmental geology, and applications for archaeological and criminal investigations.
