Geoscience Reference
In-Depth Information
Table 14.4
(continued)
Role of soil-forming
factor
Area
Soil taxa
Citations
Climate
[Global]
[Duric]
Subhumid, Mediterra-
nean, semiarid
Flach et al. (
1974
)
Parent material
[Global]
[Duric]
Easily weathered
noncrystalline
Flach et al. (
1974
)
NV, CA
Durinodic Haplocambids,
Haplic Durargids, Typic
Haplodurids, Abruptic
Xeric Argidurids,
Haploxeralfic Argidurids
Volcanic glass
Chadwick et al. (
1987
,
1989
), Blank
et al. (
1998
) and
Boettinger and
Southard (
1991
)
CA, ID
Typic Durargids, Abruptic
Xeric Argidurids,
Haploxeralfic Argidurids
Eolian additions-loess,
ash
Harden et al. (
1991
),
Blank and Fosberg
(
1991
) and Blank
et al. (
1998
)
[Global], CA
[Duric]
Ancient alluvial fans
from granite west of
Sierra Nevada
Flach et al. (
1969
) and
White et al. (
2005
)
Relief
Chico, CA
Typic Durixeralfs
Duripans form on rims
of vernal pools
Hobson and Dahlgren
(
1998
)
Sacramento
Valley, CA
Typic Palexeralfs
Opaline pendants form
on stable uplands
rather than other
landscape positions
Munk and Southard
(
1993
)
Central CA
coast
Typic Epiaquolls
Si cemented along edge
of uplifted marine
terrace
Moody and Graham
(
1997
)
Time
Central CA
Abruptic Durixeralfs
Late Pleistocene or
older surfaces
Flach et al. (
1974
)
Mercury, NV
Typic Durargids
Found on surfaces
7-440 ka
Harden et al. (
1991
)
Stage IV duripan forms
in 440 ka
Monitor
Valley, NV
Durinodic Haplocambids
Durinodes form in
<
6.8 ka
Chadwick et al. (
1989
)
Boise
Valley, ID
Haploxeralfic, Xeric,
Abruptic Xeric
Duripan 0.66 m thick on
1.7 Ma surface
Othberg et al. (
1997
)
Argidurids
130 ka required to form
duripan
Sacramento
Valley, CA
Typic Palexeralfs
Opal-CT pendants form
in late-Pleistocene
soils
Munk and Southard
(
1993
)
Merced, CA
Abruptic Durixeralfs
Pedogenic Si increases
from 40 to 600 ka
White et al. (
2005
)
San Timoteo,
CA
Typic Durixeralfs
Pedogenic Si increases
from 11.5 to 500 ka
Kendrick and Graham
(
2004
)
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