Geoscience Reference
In-Depth Information
Table 12.1 Properties of
calcic and petrocalcic
horizons as derived from the
NCRS SSURGO database
(mean values followed by
standard error)
Property
Calcic
Petrocalcic
No. of observations
201
32
Horizon
Bk
Bkm
Depth to surface (cm)
38
1.9
40
3.5
Thickness (cm)
73
2.8
60
7.8
Carbonate stage
a
1.8
0.05
4.4
0.1
Reaction to 10 % HCl
b
0
a
Morphogenetic sequence of carbonates (after Machette
1985
)
b
Degree of effervescence: 1
3.2
0.07
4
¼
slight, 2
¼
strong, 3
¼
very strong,
4
¼
violent
Table 12.2 Classification of soil series with calcic and petrocalcic horizons in the USA
No.
series
Order
Suborder Great group
Subgroups
Alfisol
Ustalfs
Haplustalfs
Calcic (4), Calcidic (36)
40
Natrustalfs
Petrocalcic (1)
1
Paleustalfs
Arenic Aridic (1), Aridic (9), Calcidic (7),
31
Oxyaquic (1), Petrocalcic (9), Typic (4)
Xeralfs
Haploxeralfs Calcic (6)
6
Pelexeralfs
Petrocalcic (1)
1
Subtotal
79
Andisols
Torrands Duritorrands
Petrocalcic (1)
1
Haplotorrands Calcic (1)
1
Subtotal
2
Aridisols
Argids
Calciargids
Aquic (2), Arenic (4), Durinodic (13), Lithic
208
(4), Petronodic (5), Typic (59), Ustertic (1),
Ustic (100), Vertic (3), Xerertic (1), Xeric (16)
Paleargids
Calcic (14)
14
Calcids Haplocalcids Aquic Durinodic (1), Aquic (14), Duric (2), Duric
Xeric (2), Durinodic (23), Durinodic Xeric (24),
522
Lithic (19), Lithic Ustic (24), Lithic Xeric (16),
Petronodic (15),Petronodic Ustic (1), Petronodic
Xeric (2), Sodic (13), Sodic Ustic (5), Sodic
Xeric (7),
Typic (131), Ustic (134), Vertic (3), Vitrandic
(2), Vitrixerandic (6), Xeric (78)
Petrocalcids
Aquic (2), Argic (19), Calcic Lithic (3), Calcic
(51),
134
Typic (20), Ustalfic (21), Ustic (13), Xeric (5)
Cambids Petrocambids Ustic (1)
1
Cryids
Calcicryids
Xeric (3)
3
Petrocryids
Duric Xeric (3), Xereptic (2)
5
Gypsids Argigypsids
Calcic (7)
7
Calcigypsids
Lithic (1), Petronodic (1), Typic (30), Ustic (15),
Xeric (1)
48
Salids
Aquisalids
Calcic (4)
4
Haplosalids
Calcic (1)
1
Subtotal
947
(continued)
Search WWH ::
Custom Search