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Abstract <p>The mosaic-block structure of the intraplate deformation zone in the Central Indian Ocean Basin is confirmed by multibeam bathymetry data collected on cruise 42 of R/V <i>Akademik Boris Petrov</i> and cruise SO258/2 of the R/V <i>Sonne</i>. It consists of a set of isometric deformed tectonic blocks. The linear block at 0.2°–0.6° S, which looks in plan view like stairs or a branch, is sharply distinguished by its morphology. This block is a system of multiscale structural elements (folds, faults) that constitute a structural paragenesis formed in the mechanical environment of dextral transpression and can be interpreted using the Riedel model.</p>

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Structural Paragenesis of a Shear Zone within the Intraplate Deformation of the Central Indian Ocean Basin

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • O. V. Levchenko,
  • A. V. Tevelev,
  • Y. G. Marinova,
  • I. A. Veklich

摘要

Abstract

The mosaic-block structure of the intraplate deformation zone in the Central Indian Ocean Basin is confirmed by multibeam bathymetry data collected on cruise 42 of R/V Akademik Boris Petrov and cruise SO258/2 of the R/V Sonne. It consists of a set of isometric deformed tectonic blocks. The linear block at 0.2°–0.6° S, which looks in plan view like stairs or a branch, is sharply distinguished by its morphology. This block is a system of multiscale structural elements (folds, faults) that constitute a structural paragenesis formed in the mechanical environment of dextral transpression and can be interpreted using the Riedel model.