Dynamic evolution of badlands in the Roglio basin (Tuscany, Italy)

S. Battaglia, L. Leoni, F. Rapetti, M. Spagnolo

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The Roglio basin, in the relatively arid Central Tuscany (Italy), is characterised by the presence of 191 badlands that have developed on Pliocene fine-grained blue clays. A morphometric analysis on the badlands has highlighted that these landforms formation and distribution are primarily related to the steepness of the hill flanks, which favour runoff and gravitational processes, along with favourable aspects, typically the southern ones that experience a stronger solar-induced daily thermal variation. A detailed physico-chemical analysis of the clayey material involved has also been carried out, with the specific aim of testing whether this plays a role in the various stages of activity shown by the Roglio basin badlands. The results indicate that there are no significant differences in the physico-chemical properties of an active vs. an inactive/dormant badland. Observation and field data, however, indicate that the dynamic of the Roglio basin badlands is strongly controlled by the occurrence of earth flows and the velocity of sediment removal at the bottom of the badlands. These two processes, variously combined at different intensity in relationship to many local factors, are likely to be the main responsible for the different stages of activity shown by the Roglio basin badlands. (C) 2011 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)14-23
Number of pages10
JournalCatena
Volume86
Issue number1
Early online date17 Mar 2011
DOIs
Publication statusPublished - Jul 2011

Keywords

  • Central Tuscany
  • Badlands
  • Denudation processes
  • Morphometry
  • Mineralogy
  • Soluble salts
  • Grain size
  • Erosion processes
  • Northern Apenninies
  • Stabilization
  • Spain
  • Identification
  • Basilicata
  • Indicators
  • Vegetation
  • Landform
  • Soils

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