| http://www.w3.org/ns/prov#value | - Even though ground-water laterite profiles developed in the terrace deposits along the Amazon River are not as intensely weathered as most of the laterite profiles described by Mohr and others (1972), their clay fractions contain no illite, smectite, chlorite, or other 2:1 clay minerals, and they do contain gibbsite (Sombroek, 1966, p. 109).
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