Identification of marine sediments inferred from diatom fossil and lithofacies in the drillcores in central Kanto Plain, Japan

Abstract

Number and depth of marine intervals in seven drillcores in central Kanto Plain, central Japan, were examined by diatom fossil analysis and lithofacies observations. The numbers of identified marine intervals in seven drillcores are as follows; 15 marine intervals (TZ-M1-TZ-M15) in Tokorozawa core, six marine intervals (WM-M1-WM-M6) in Washimiya core, three marine intervals (GD-M1-GD-M3) in Gyoda core, 12 marine intervals (KGH-M1-KGH-M12) in Koshigaya-Higashi core, 14 marine intervals (KJ-M1-KJ-M14) in Kawajima core, 18 marine intervals (KK-M1-KK-M18) in Kasukabe core and eight marine intervals (FS-M1-FS-M8) in Fukasaku A-1 core. These results present basic stratigraphic data to develop the Quaternary subsurface stratigraphy of central Kanto Plain.