@phdthesis{oai:tsukuba.repo.nii.ac.jp:00008394,
 author = {小口，千明 and Oguchi, Chiaki T},
 month = {},
 note = {In an attempt to explore the rates and mechanism of weathering-ring development, temporal changes in several rock properties due to weathering were investigated and a growth model for the weathering rinds was constructed. The study area is Nasuno-ga-hara, Central Japan, which consists of coalescing alluvial fans with four fluvial terraces and a modern floodplain. The formation ages of these geomorphic surfaces are 0-ka, 20 ka, 320 ka, 450 ka and 830 ka. The time elapsed since the above ages is assumed as the weathering periods. The terrace and floodplain deposits commonly include andesite gravel. The gravel was randomly sampled from the outcrops of each geomorphic surface. All the gravel taken from 320-ka, 450-ka and 830-ka terraces has brown weathering rinds (brown layers) with a thickness of 3-6 mm, which differ from fresh-looking inner parts with gray colour. Rock sample with similar texture were chosen for detailed investigation. The rocks taken from each geomorphic surface are called as O-ka, 20-ka, 320-ka, 450-ka and 830-ka rocks.  ･･･, 1998},
 school = {筑波大学, University of Tsukuba},
 title = {Rates and mechanism of weathering-rind development on andesite gravel in fluvial terrace deposits},
 year = {1998}
}