Affiliation: | 1. Department of Planetology, Kobe University, Kobe 657‐8501, Japan;2. Research Center for Inland Seas, Kobe University, Kobe 657‐8501, Japan;3. Research Centre for Palaeoclimatology, Ritsumeikan University, Kusatsu 525‐8577, Japan;4. Museum of Nature and Human Activities, Hyogo, Sanda 669‐1546, Japan;5. Institute of Natural and Environmental Sciences, University of Hyogo, Sanda 669‐1546, Japan |