Late Cenozoic Stratigraphy of the Feather and Yuba Rivers Area, California, with a Section on Soil Development in Mixed Alluvium at Honcut Creek

摘要

The authors describe a sequence of upper Tertiary and Quaternary alluvial deposits for the area of the Feather and Yuba Rivers in the Sacramento Valley, California, and they correlate these deposits with existing stratigraphic units to the south in the northeastern San Joaquin Valley and also describe their studies of relict and exhumed soils formed on six of these deposits at Honcut Creek in the center of the project area. The soils were examined in order to establish a soil chronosequence to evaluate the systematic changes in soil profile properties with increasing age of the deposits, and to evaluate the use of soils as correlation and dating tools for deposits of the upper Cenozoic.