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MACRO- AND MICROMORPHOLOGY OF TEN REDDISH BROWN SOILS FROM THE ATLANTIC PROVINCES

1969; Canadian Science Publishing; Volume: 49; Issue: 1 Linguagem: Inglês

10.4141/cjss69-007

1918-1841

J. A. McKeague, G. A. Bourbeau, J. I. MACDOUGALL, K. K. Langmaid,

Soil and Unsaturated Flow

Detailed morphological studies of monoliths and thin sections of 10 soils formed in reddish brown deposits in Nova Scotia and New Brunswick revealed appreciable differences in the kind and degree of development. Contrary to recent concepts of pedogenesis in this area, it was found that Podzol development was restricted to the coarser materials. Clay translocation had occurred in most of the soils and five of them, including two Gleysolic soils, had Bt horizons. Free carbonate occurred within 140 cm of the surface of seven of the soils, but it was not established that free carbonate had occurred in all of the materials from which the sola developed. Bisequa development was evident in four of the soils, and in one of these it appeared that there were two sequa of clay eluviation and illuviation. No micromorphological evidence was found of a Bft horizon in any of the soils. The study casts further doubt upon the validity of the concept that there is, in the Atlantic Provinces, a group of soils (Textural Podzol) having a Bt horizon that satisfies the requirements of a Podzol B.