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<br />calcium carbonate equivalent; ,trongly efi`ervescent; strongly alkaline
<br />-T'
<br />TYPE LOCATION:. Moffat County, Colorado; seven miles south of Hamiiton.,~
<br />Colorado; 3,850 feet east and 250 feet north of the southwest corner of
<br />Sec. 32, T. 4 N., R. 51 ri. Longitude: 107 degrees, 37 minutes, 47
<br />seconds wes't.. C3titude: 40 degrees, 16 minutes, 7 seconds north.
<br />RANGE IN'CHARACTEP.ISTICS: Mean annual soil temperature is 41 to $4
<br />degrees F and rnean summer soil temperature is 59 to 05 aegrees F. The .
<br />soil temperature at a depth of 20 inches is move 41 degrees for 170 to
<br />190 days. The moisture control section in most years is moist in all
<br />parts for 30 to 45 consecutive days in .May and June, and dry in atl
<br />parts r"or 45 consecutive days immediately after „uly 1~, and moist in
<br />• some but not "all parts for most of the period from Septemoer through
<br />~~ March 30. It~~~is not dry in all parts for more than nalf~tne time that
<br />the soil temperature is higher than .41 degrees F. at a dapt;~ of 20
<br />inches. Depth to calcareous material ranges from 14 to 30 inches. The
<br />mollic epipedbm'rangES from 7 to i5 inc~~es thick.
<br />the A horizon has Value o. 3 through 5 cry, 2 or ~ moist, anc chrome of
<br />1 ahrouyh 3. Reaction is neutral cr mi+cly alka~ina.
<br />The.Bt horizon has hue or" 2.5Y through 7.5YR, value or` 4 through 6, 3
<br />through.'S rrioist, and chrome of 2 through 4. Texture is clay loam, silty
<br />clay loam, s'il'ty 'c;ay, and clay with 35 to 45 percent clay. Reaction is
<br />neutral or mildly alkaline.
<br />• The Bk horizon .has hue of 2.5Y through 7.5Y'R. Texture is clay loam,
<br />silty`c.iay ibam;'and clay. Ca{cium carbonate ranges from 2 to 14
<br />' percent'.
<br />_ COMPETING SERIES: These are Absarokee, Acree, Bearpaw, Bro~iiar,
<br />Danvers, De'.Is'on, Herm, Mondamir~, Nortez, Peninsula, Premiss, Quilt,
<br />Regent,"Re'get~'Ricot, Savage, Tamaneen, Tomasaki, Tukuhnik, and WorK
<br />series...;'Absarokee;.B'rolliar, Nortez, Premiss, Regent,"and Reget soils
<br />have be~d;rock~.at depths or` 20 to 40 inches. Delson, Harm, Gui l t, and
<br />Torriasak'i;::so i'I's. ar'e nonca`I careous. Bearpaw so i I s .have a h i gh bu I k density
<br />subst.raturn'.at.'depths of less than 40 inches. Danvers and Peninsula soils
<br />~,have.a cal:c.i`b hor'izon_...TUkuhnik soils have visible secondary carbonates
<br />~at`de:ptFis'_greater,"4han 30 inches. Mondamin is formed in
<br />gl'aci`o=~I~acustr°ine:':s`edi'ments -with a. substratum containing lenses of very
<br />fine s"and and'f'ine sand at depths of less than .40 inches. Savage,
<br />Tarriane'en;.:anld Work soils have their moisture control section moist in
<br />some d'r all'perts during. June and July and parts of August. Ricot soils
<br />have lithologic di"s continuities in the control section. Acree soils
<br />have hues of SYR and redder in the Bt horizon.
<br />GEOGRAPHIC SETTING: Morapos soils aro on low hills and ancient
<br />lands~lide's~and s'I~umps, most of which aro stable under present cf;matic
<br />conditions:: Slopes are 0 to 50 percent. The soil formed in residuum
<br />from shale and siltstone and in loess. E4evation ranges from 6,400 to
<br />8,000 feet. .A~t the type location, the moan annual precipitation ranges^
<br />from 15 to 20 inches and is.cvJnly distributed throughout the year
<br />except for a'slight decline In July. In southwestern Colorado peak
<br />amounts of precipitation are received in late July, August, and
<br />September. Over half of the precipitation is received as snow. ;lean
<br />annual temperature ranges ,-'ram =0 :. 47 degrees F., a.-d the mean summer
<br />
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