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Factors Controlling Oncoid Distribution in the Inner Areas of a Late Kimmeridgian Carbonate Ramp (Northeast Spain)

  • Cristina SequeroEmail author
  • Beatriz Bádenas
  • Marcos Aurell
Conference paper
Part of the Advances in Science, Technology & Innovation book series (ASTI)

Abstract

The factors controlling the oncoid distribution in the interior areas of a latest Kimmeridgian shallow carbonate ramp were examined based on a detailed sedimentological and petrographic analysis of the upper sequence of the Higueruelas Formation (Iberian Basin, Northeast Spain). Four types of oncoids are defined: small micrite-dominated type I and II oncoids are generally found in low proportion in all sub-environments (from backshoal/washover, lagoon to intertidal). Large Bacinella-dominated type III and IV oncoids predominate in low-energy lagoonal areas. Variable energy water, oligotrophic conditions and probably low sedimentation rates controlled oncoid growth and distribution, thus highlighting their potential as palaeo-environmental proxies.

Keywords

Oncoids Lagoon Carbonate ramp Latest kimmeridgian Iberian basin 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Cristina Sequero
    • 1
    Email author
  • Beatriz Bádenas
    • 1
  • Marcos Aurell
    • 1
  1. 1.University of ZaragozaZaragozaSpain

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