三畳系成羽層群の地質と地すべり Landslide occurrence and geology of the Triassic Nariwa Group, Southwest Japan
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