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example 7
ashy over sandy-skeletal,
aniso, glassy over isotic, frigid Typic Vitrixerand
(Bonner series)
This soil profile has formed in 2 parent materials and is typical
of the many of the Andisols of northern Idaho, eastern Washington,
and western Montana. The upper 35 to 60 cm of the profile contains
as much as 60% volcanic ash, the majority of which came from the
eruption of Mt. Mazama (now Crater Lake) in southwestern
Oregon approximately 7,700 years ago. The lower portion of the profile
is formed in glacial outwash materials from glacial Lake Missoula outburst
flooding which occured during the
Pleistocene Epoch. In WRB, this soil is classified as a Vitric Andosol.
For more information on the Bonner series, click here.
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