三畳系成羽層群の地質と地すべり [in Japanese] Landslide occurrence and geology of the Triassic Nariwa Group, Southwest Japan [in Japanese]
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Geological and topographical study of landslides in the Triassic Nariwa Group has been carried out. Nariwa Group is mostly composed of non-marine deposites and is characterized by cycle of fining upward successions. Landslides abundantly occur in the non-marine successions. Slip surface occure in coaly mudstones that have conspicuously less strength than sandstones. Creeps immediately below slip surfaces contribute to the occurrence of landslides in the Nariwa Group.
- Okayama University Earth Science Report
Okayama University Earth Science Report 4(1), 21-32, 1997-09-20