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Self-organized rhythmic patterns in geochemical systems.

Ivan L'heureux1

  • 1Department of Physics, University of Ottawa, , 150 Louis Pasteur, Ottawa, Ontario, Canada K1N 6N5.

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|November 6, 2013
PubMed
Summary
This summary is machine-generated.

Geochemical systems exhibit chemical oscillating patterns from self-organization in nonlinear systems. Nonlinear dynamics tools reveal these patterns, aiding understanding of Earth

Keywords:
Liesegang bandsgeochemical self-organizationoscillatory zoningpattern formation

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Area of Science:

  • Geochemistry
  • Nonlinear Dynamics
  • Mineralogy

Background:

  • Chemical oscillating patterns are common in geochemical systems, arising from external conditions or intrinsic self-organization.
  • Periodic precipitation (Liesegang bands) and oscillatory zoning in rocks and minerals exemplify patterns explained by nonlinear dynamics.
  • Non-equilibrium nonlinear systems with positive feedback drive self-organized pattern formation.

Purpose of the Study:

  • To review various chemical oscillating patterns observed in diverse geological environments.
  • To demonstrate the utility of nonlinear dynamics in interpreting geological patterns.
  • To introduce a novel example of periodic pyrite band precipitation in sapropel sediment.

Main Methods:

  • Review of pattern types from eruptive, sedimentary, hydrothermal, and metamorphic geological settings.
  • Application of nonlinear dynamics concepts to explain pattern formation.
  • Presentation of a new case study: periodic precipitation of pyrite bands.

Main Results:

  • Identification of diverse oscillating and chaotic patterns in geochemical systems.
  • Demonstration that exceeding threshold parameters destabilizes steady states, leading to dynamic attractors.
  • Successful application of nonlinear dynamics to explain observed geological patterns.

Conclusions:

  • Nonlinear dynamics provides a powerful framework for understanding self-organized chemical patterns in geology.
  • These patterns offer insights into the history and processes of our planet.
  • The study highlights the broad applicability of nonlinear dynamics across various geological environments.