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Soils in an Aridic, Ustic, Udic, Climosequence in the Maracaibo Lake Basin, Venezuela¹

ABSTRACT

Eight profiles developed from parent materials with low contents of weatherable minerals retained remarkably similar mineralogical suites regardless of soil moisture regime although some mica weathering was detected in the udic soil moisture regime. Sola thickness exceeded 2 m in all profiles. Base saturation percentages increase with depth in the B horizons of the soils in the aridic and ustic soil moisture regimes and clearly decrease with depth in the udic soil moisture regime.

¹ Paper no. 6053 of the Journal Series of the North Carolina Agric. Exp. Stn., Raleigh, NC 27607.

² Soil Scientist, COPLANARN, Maracay, Venezuela, and Professor, North Carolina State Univ., respectively.

Received for publication July 6, 1979. Accepted for publication November 5, 1980.