Abstract
Argillaceous sediments were sampled in the seven different sites throughout Japan and chemical mineralogical tests were conducted. The influence of the chemical mineralogical composition on compaction and lithification was studied based on the test results. As a result of the evaluation of the relationship between the kinds of authigenic minerals and the buried depth, the sedimentary conditions of argillaceous sediments could be presumed. In addition, it was clarified that the degree of compaction and lithification was greatly influenced by not only cementation of the mineral grains but amorphous mineral content.
