@article{oai:ir.kagoshima-u.ac.jp:00005153, author = {SHINAGAWA, Akio and HIGASHI, Teruo and KATAYAMA, Tadao C.}, issue = {1}, journal = {南海研紀要}, month = {2016-10-28}, note = {The amounts of silt and clay in the coastal sands and the marine sediments of Nagura Bay were small as compared with Kabira Bay, which has a narrower bay mouth. Main primary minerals of the coastal sands and the marine sediments were quartz and feldspar in both Nagura and the head of Kabira Bay. Small amounts of aragonite were in the marine sediments of Nagura Bay. Whereas, considerable amounts of calcite and aragonite were in the coastal sands and the marine sediments in the bay mouth and the bay center of Kabira Bay. The above-mentioned differences were assumed to be due to the difference in the shape of the bays, particularly to the bay mouth features. The influence of eroded and transported backland soils to the coast and the marine bed was relatively small in Nagura Bay compared to the bay head of Kabira Bay.}, pages = {11--25}, title = {Back Soils, Coastal Sands, and Marine Sediments of Nagura Bay in Comparison with Those of Kabira Bay, Ishigaki Island, Okinawa Prefecture}, volume = {6}, year = {} }