Sedimentology of geomorphologically controlled Quaternary tufas in a valley in southern Spain

F. García-García, S. Pla-Pueyo, L. M. Nieto, C. Viseras

Research output: Contribution to journalArticle

13 Citations (Scopus)
44 Downloads (Pure)

Abstract

Four vertical facies sequences characterizing different environments have been identified in relation to two phases of tufa deposition (probably Pleistocene and Holocene) within a valley located in the central sector of the Betic Cordillera (southern Spain): (1) alluvial-fluvial (non-tufa) deposits, (2) fluvial tufa, (3) fluvio-lacustrine facies, and (4) spring with waterfall tufa. The first three created a stepped axial depositional system and the spring with waterfall tufa formed a transverse system. During the first phase of tufa construction, the vertical evolution in the axial system from alluvial-fluvial (non-tufa) to fluvio-lacustrine tufa deposits is interpreted as the consequence of geomorphological control. The evolution through time from a high-gradient and stepped fluvial system to a low-gradient fluvio-lacustrine system occurred upstream from where the progradation of the transverse, perched spring tufa system became narrower and finally dammed the valley. The tufa barrage caused an increase in the vertical accumulation within the axial system and a consequent upstream decrease of accommodation space and slope of the longitudinal profile. After a period of fluvial incision, tufa formed again during the Holocene in a high-gradient and stepped fluvial system.

Original languageEnglish
Pages (from-to)53-72
Number of pages20
JournalFacies
Volume60
Issue number1
Early online date6 Feb 2013
DOIs
Publication statusPublished - Jan 2014

Keywords

  • Betic Cordillera
  • Fluvial tufa
  • Quaternary geomorphology
  • Spring tufa

ASJC Scopus subject areas

  • Geology
  • Palaeontology
  • Stratigraphy

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