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Título del libro: Interpretation Of Micromorphological Features Of Soils And Regoliths
Título del capítulo: Regoliths and Soils on Volcanic Ash

Autores UNAM:
SERGUEI SEDOV;
Autores externos:

Idioma:
Inglés
Año de publicación:
2010
Resumen:

This chapter provides a structured overview of the micromorphological characteristics of soils and regoliths formed on volcanic ash. It demonstrates that soils formed on tephra are quite different from those formed on other parent materials. Soils formed on volcanic sediments (pyroclastic material) have particular characteristics, which differentiate them from soils derived from other parent materials. In studies of volcanic materials, little effort has been made to distinguish materials derived from direct ashfall and those transported and recycled by aeolian activity or colluvial processes. It is not always clear whether the described soils developed on tephra or on lava flows. A major contribution of micromorphology has been to clarify the complexities of accumulation patterns, including occurrences of standstill phases, water-borne sedimentation, and aeolian deposition. Information on soils on volcanic ash in arid environments is very limited, apart from some data for palaeosoils. © 2010 Elsevier B.V. All rights reserved.


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