Petrocalcids have a subsoil horizon within 1 meter from the soil surface that has accumulated so much calcium carbonate over time that it has become cemented (petrocalcic horizon), forming a hardpan. Most of these soils have a sandy texture. Petrocalcids have limited suitability for irrigated agriculture due to the depth of the hardpan (AD106).
Petrocalcids cover 2,196 hectares, or less than 0.1% of the UAE.
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