Temporal and Spatial Variations of Accommodation and Sediment Accumulation during Transgressive to Highstand Stages as Reconstructed from a Latest Pleistocene to Holocene Sequence in the Intra-Arc Osaka Basin, Japan
Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53516#.VMcukSzQrzE Author(s) Fujio Masuda , Natsumi Itomoto Affiliation(s) Department of Environmental System Sciences, Faculty of Science and Engineering, Doshisha University, Kyoto, Japan . ABSTRACT Temporal and spatial variations in accommodation ( i.e ., paleo-water depth) and sediment accumulation (amount of deposition) in the intra-arc Osaka Basin, Japan, were reconstructed from the post-glacial transgression through the sea-level highstand, a total of 9000 years. At the beginning of the marine transgressive stage (about 11,000 cal y BP), paleo-water depths were shallow and the sediment accumulation was large. The area occupied by Osaka Bay gradually extended and sediment deposition decreased from 11,000 to 6000 cal y BP. During the period of maximum transgression (6000 - 5000 cal y BP), an inner bay, Kawachi Bay with a water depth of 5 - 10 m...