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Contribution to genesis of palaeosols (Almagres) on the Canary Islands (Spain) by thin section technique


, : Contribution to genesis of palaeosols (Almagres) on the Canary Islands (Spain) by thin section technique. Anales de Edafologia y Agrobiologia 46(5-6): 667-685

In thin section, "almagre" is red coloured with transmitted and oblique incident light. A pedogenic process influenced by heat leads to the formation of haematite producing a ferruginous impregnation of the micromass, the process being associated to a fairly intense ferruginisation of lapilli fragments. Pressure and temperature compact the original soil, the porosity depending on the type of microstructure.

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Related references

Benayas J.; Carbajal H.; Herrera M.J., 1987: Contribution to the genesis of Paleosols (Almagres) in the Canary Islands from thin section study. Anales de Edafologia y Agrobiologia 46(5-6): 667-685

Palomar, M.L.; Hernando, J., 1993: Chemical and mineralogical study of the palaeosols ('Almagres') of Tenerife (Canary Islands). The chemical and mineralogical composition of relict formations under basaltic flows in Tenerife (Canary Islands) are described. The soils, known by the vernacular name of 'almagres', are compact and cohesive, with a red colour (10 R on...

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