LOCATION MALIN                   OR

Established Series
Rev. JSC/AON/CEG/BTH
02/2024

MALIN SERIES

Landscape--Intermontane basins
Landform--flood plains, lake bottoms
Slope--0 to 1 percent
Parent material--mixed alluvium and lacustrine material with small amounts of ash
Mean annual precipitation--about 305 mm
Mean annual air temperature--about 9 degrees C
Depth class--very deep
Drainage class--poorly drained
Soil moisture regime--aquic
Soil temperature regime--mesic
Soil moisture subclass--aquic

TAXONOMIC CLASS: Fine, smectitic, calcareous, mesic Fluvaquentic Endoaquolls

TYPICAL PEDON: Malin clay loam, irrigated pasture

Ap--0 to 15 cm; clay loam, dark gray (N 4/0) dry, black (10YR 2/1) moist; moderate medium angular blocky structure; very hard, friable, moderately sticky and moderately plastic; many very fine roots; many very fine pores; slightly effervescent; strongly alkaline (pH 8.7); abrupt smooth boundary

Akn--15 to 35 cm; silty clay, gray (N 5/0) dry, black (N 2/0) moist; common fine grayish brown mottles; moderate medium angular blocky structure; very hard, very firm, very sticky and very plastic; common very fine roots; common very fine tubular pores; continuous stress cutans on ped surfaces; strongly effervescent; very strongly alkaline (pH 9.1); clear smooth boundary

Bkn1--35 to 53 cm; clay loam, gray (N 6/0) dry, black (10YR 2/1) moist; many medium dark grayish brown (10YR 4/2) mottles; moderate fine angular blocky structure; very hard, firm, moderately sticky and moderately plastic; common very fine roots; common fine and very fine tubular pores; strongly effervescent; strongly alkaline (pH 8.8); clear smooth boundary

Bkn2--53 to 109 cm; clay loam, gray (N 6/0) dry, very dark grayish brown (2.5Y 3/2) moist; common medium dark grayish brown (2.5Y 4/2) mottles; massive; hard, firm, moderately sticky and moderately plastic; few very fine roots; many fine and very fine tubular pores; strongly effervescent; strongly alkaline (pH 8.8); clear smooth boundary

Bk--109 to 163 cm; clay loam, light gray (10YR 7/1) dry, very dark grayish brown (2.5Y 3/2) moist; common medium dark grayish brown (2.5Y 4/2) mottles; massive; very hard, firm, moderately sticky and moderately plastic; few very fine roots; many fine and very fine tubular pores; strongly effervescent; moderately alkaline (pH 8.4)

TYPE LOCATION: Klamath County, Oregon; south end of Poe Valley; 640 m east and 490 m south of the northwest corner of section 35, T. 39 S., R. 11.5 E., Willamette Meridian; Bonanza, Oregon USGS 7.5 Minute Topographic Quadrangle; latitude 42.14705 degrees north, longitude 121.4986 degrees west, datum WGS 84 (coordinates derived from topographic map legal description)

RANGE IN CHARACTERISTICS:
*Soil temperature regime--mesic
*Mean annual soil temperature-- 8 to 11 degrees C
*Moisture control section--10 to 30 cm
*Mollic epipedon--25 to 60 cm thick
*SAR--20 to 30 in the mollic epipedon; decreases at depths below 50 cm
*EC--2 to 16 mmhos
*Organic matter--decreases irregularly with depth
*Calcium carbonate--calcareous in all parts; disseminated carbonates

Particle-size control section
*Clay content--35 to 50 percent
*Fine to very coarse sand content--greater than 15 percent

Ap and Akn horizons
*Hue--10YR or neutral dry or moist
*Value--4 or 5 dry, 2 or 3 moist
*Chroma--0 or 1 dry or moist
*Fine-earth texture--clay loam, silty clay
*Reaction--strongly or very strongly alkaline (pH greater than 8.5)
*Thickness--8 to 60 cm

Bkn and Bk horizons
*Hue--2.5Y, 10YR, or neutral dry, 2.5Y or 10YR moist
*Value--5 to 7 dry, 3 to 5 moist
*Chroma--0 to 2 dry or moist
*Fine-earth texture--clay loam, silty clay loam, silty clay; strata of sandy clay loam
*Reaction--moderately or strongly alkaline (pH 7.9 to 9.0); pH decreases with depth
*SAR--13 to 30; decreases with depth

COMPETING SERIES: There are no other series in this family at this time.

GEOGRAPHIC SETTING:
Elevation--1234 to 1448 m
Climate--hot, dry summers and cool, wet winters
Mean annual air temperature-- 7 to 11 degrees C
Mean annual precipitation--254 to 570 mm
Mean January temperature-- about -2 degrees C
Mean July temperature-- about 19 degrees C
Frost-free period--50 to 110 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Bedner--on nearly level terraces; nonsodic; duripan at 50 to 100 cm
Calder-- on nearly level low terraces; nonsodic; ochric epipedon; duripan at 25 to 50 cm
Hosley--on low terraces; duripan at 50 to 100 cm
Lakeview--on flood plains, alluvial fans, and stream terraces; moderately well drained; nonsodic; average 25 to 35 percent clay
Pit--on flood plains and in basins; nonsodic; slickensides
Scherrard--on low terraces; duripan at 50 to 100 cm

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--poorly drained
Saturation in normal years--water table is at a depth of 0 to 120 cm from March to June (spring snowmelt period), and is above 50 cm for some time during those months
Ponding--frequent, long; December through May; up to 30 cm deep
Saturated hydraulic conductivity (Ksat)--moderately high in the Ap; moderately low to moderately high below the Ap

USE AND VEGETATION:
Use--irrigated agriculture, wildlife habitat
Vegetation--inland saltgrass, Nuttall's alkaligrass

DISTRIBUTION AND EXTENT: Klamath and Shasta Valleys and Basins, OR; MLRA 21; moderately extensive

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Davis, California

SERIES ESTABLISHED:
Klamath County, Oregon, 1977

REMARKS:
Diagnostic horizons and features in this pedon
*Mollic epipedon--Ap, Akn horizons
*Aquic conditions--all horizons
*Endosaturation--all horizons
*Particle-size control section--zone from 25 to 100 cm
*Irregular decrease in organic matter with depth

05/2022: updates to this document were primarily formatting; also updated the competing series section; expanded the climatic ranges slightly; added information on ponding.

ADDITIONAL DATA:
NASIS SITE ID--1977OR035006; NASIS PEDON ID--1977OR035006

---

National Cooperative Soil Survey
U.S.A.