Calcic and Petrocalcic Horizons - Soil Geography of the USA: A Diagnostic-Horizon Approach - page 113

Table 12.3 (continued)
Area Soil taxa Role of soil-forming factor Citations

S. India Rhodic Haplustalfs,

Typic Rhodustalf

Calcic horizons form in
foothills and petrocalcic
horizons in depressions

Shankar and
Achyuthan ( 2007 )

TX (USA) Aeric Calciaquolls,

Aquic Haplustolls

Udolls with calcic horizons
form on microhighs and
noncalcareous Aqualfs
form on microlows

Sobecki and Wilding
( 1982 )

Parent materials

CA, NV (USA) (1) Typic Haplargids,

Typic
Torriorthents,
(2) Udic
Haplustalfs,
Petrocalcic
Calciustolls, Typic
Palecambids, Lithic
Calciustolls,
(3) Aeric
Calciaquolls, Typic
Argiaquolls
(4). Calciustolls

Weathering in situ more
important than aeolian
inputs

(1) Boettinger and
Southard ( 1991 );
(2) Rabenhorst
et al. ( 1984 ,
1986a , b );
(3) Sobecki and
Wilding ( 1983 );
(4) West et al.
( 1988a , b , c )

SW USA - Aeolian inputs provide most

of the CaCO 3

Machette ( 1985 ),
Chadwick and
Davis ( 1990 ) and
Van der Hoven and
Quade ( 2002

NM (USA) Petrocalcic Paleargids Sr isotopes show 94-98 % of

CaCO 3 is from aeolian
inputs

Capo and Chadwick
( 1999 )

CA, NV (USA) Dust deposition

2-20 g/m 2 /yr

Reheis ( 2006 )

Time

Iran Xerofluvents,

Haploxerepts

Petrocalcic horizons exist on
lower and middle Pleisto-
cene surfaces, ca. 1-2 Ma

Abtahi ( 1980 )

S. India - Calcretes require > 200 Ka to

form

Achyuthan
et al. ( 2012 )

Argentine Petrocalcic Paleustolls/

Calciustolls

Caliche is of early
Pleistocene-Pliocene age

Amiotti et al. ( 2001 )

SW USA CaCO 3 accumulation rates

0.22-0.51 g/cm 2 /kyr

Machette ( 1985 )

Sask.
(Canada)

CaCO 3 accumulation rates
8.3-14.3 g/cm 2 /kyr

Landi et al. ( 2003 )

NM (USA) Haplocalcids Haplocalcids form during

Holocene

Gile ( 1975 )

SW USA Ustalfic Petrocalcids Four morphogenetic carbon-

ate stages on gravelly and
non-gravelly soils identi-
fied; later expanded to six
by Machette ( 1985 )

Gile et al. ( 1966 ) and
Machette ( 1985 )