Radiocarbon analyses of charcoal from basal colluvium in 11 California hollows show a clustering of dates between 9000 and 15 000 BP, an indication that changes in the storage and discharge of colluvium from hillslopes accompanied the Pleistocene-Holocene transition. One hypothesis is that greater storm intensities occurred in the latest Pleistocene and induced a higher frequency of landslides in hollows and a regional extension of channel heads upslope relative to the Holocene. The increased storage of debris during the Holocene may have resulted in a diminished supply of sediment to stream channels.-from AuthorsDept of Geology & Geophysics, Univ of California, Berkeley, CA 94720, USA.
|Original language||English (US)|
|Number of pages||4|
|State||Published - Jan 1 1986|
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