Al Yafar soil series
The Al Yafar series is a very deep soil formed in gravelly loamy and sandy alluvial deposits. (NE022) UAE.
Taxonomic classification: Typic Haplogypsids, loamy-skeletal, mixed, superactive, hyperthermic
Diagnostic subsurface horizon described in this profile is: Gypsic horizon 30 to 70 cm.
The pH (1:1) ranges from 7.0 to 7.8 throughout the profile. The EC (1:1) ranges from 0.1 to 5.0 throughout. A desert pavement of gravel in many areas covers 2 to 80% of the soil surface. The size of the rock fragments on and in the soil is predominantly gravel, but may include cobbles and a few stones, especially in areas close to the mountains. The size of rock fragments generally decreases as distance from the mountains increases.
The A horizon thickness ranges from 10 to 25 cm. Hue is 7.5YR or 10YR, value is 4 to 7, and chroma is 3 to 6. Texture is loamy sand, loamy fine sand, fine sandy loam, sandy loam, or loam, including gravelly or very gravelly texture modifiers.
The B horizon has hue of 7.5YR or 10YR, value of 4 to 7, and chroma of 2 to 6. Texture in more than half of the particle-size control section is coarse sandy loam, sandy loam, fine sandy loam, or loam, including very gravelly or extremely gravelly texture modifiers. Also included in the B horizon are layers making up less than half the particle-size control section with texture of loamy coarse sand, loamy sand, or loamy fine sand including gravelly, very gravelly, or extremely gravelly texture modifiers. Individual layers may have less than 35% gravel, but the weighted average gravel content of the particle-size control section is 35% or more. Visible secondary gypsum in the form of masses or crystals range from 2 to 20%. The B horizon may be very weakly cemented or weakly cemented by gypsum. However; roots appear to be able to penetrate at less than 10 cm spacing. Some pedons are not cemented.
Al Yafar soil series
The Al Yafar series is a very deep soil formed in gravelly loamy and sandy alluvial deposits. (NE022) UAE.
Taxonomic classification: Typic Haplogypsids, loamy-skeletal, mixed, superactive, hyperthermic
Diagnostic subsurface horizon described in this profile is: Gypsic horizon 30 to 70 cm.
The pH (1:1) ranges from 7.0 to 7.8 throughout the profile. The EC (1:1) ranges from 0.1 to 5.0 throughout. A desert pavement of gravel in many areas covers 2 to 80% of the soil surface. The size of the rock fragments on and in the soil is predominantly gravel, but may include cobbles and a few stones, especially in areas close to the mountains. The size of rock fragments generally decreases as distance from the mountains increases.
The A horizon thickness ranges from 10 to 25 cm. Hue is 7.5YR or 10YR, value is 4 to 7, and chroma is 3 to 6. Texture is loamy sand, loamy fine sand, fine sandy loam, sandy loam, or loam, including gravelly or very gravelly texture modifiers.
The B horizon has hue of 7.5YR or 10YR, value of 4 to 7, and chroma of 2 to 6. Texture in more than half of the particle-size control section is coarse sandy loam, sandy loam, fine sandy loam, or loam, including very gravelly or extremely gravelly texture modifiers. Also included in the B horizon are layers making up less than half the particle-size control section with texture of loamy coarse sand, loamy sand, or loamy fine sand including gravelly, very gravelly, or extremely gravelly texture modifiers. Individual layers may have less than 35% gravel, but the weighted average gravel content of the particle-size control section is 35% or more. Visible secondary gypsum in the form of masses or crystals range from 2 to 20%. The B horizon may be very weakly cemented or weakly cemented by gypsum. However; roots appear to be able to penetrate at less than 10 cm spacing. Some pedons are not cemented.