Factors affecting finite strain estimation in low-grade, low-strain clastic rocks

Daniel Pastor-Galán, Gabriel Gutiérrez-Alonso, Patrick A. Meere, Kieran F. Mulchrone

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

The computer strain analysis methods SAPE, MRL and DTNNM have permitted the characterization of finite strain in two different regions with contrasting geodynamic scenarios; (1) the Talas Ala Tau (Tien Shan, Kyrgyzs Republic) and (2) the Somiedo Nappe and Narcea Antiform (Cantabrian to West Asturian-Leonese Zone boundary, Variscan Belt, NW of Iberia). The performed analyses have revealed low-strain values and the regional strain trend in both studied areas. This study also investigates the relationship between lithology (grain size and percentage of matrix) and strain estimates the two methodologies used. The results show that these methods are comparable and the absence of significant finite strain lithological control in rocks deformed under low metamorphic and low-strain conditions.

Original languageEnglish
Pages (from-to)1586-1596
Number of pages11
JournalJournal of Structural Geology
Volume31
Issue number12
DOIs
Publication statusPublished - 2009 Dec
Externally publishedYes

Keywords

  • Cantabrian Zone
  • DTNNM
  • Mean radial length
  • SAPE
  • Strain analysis
  • Talas Ala Tau

ASJC Scopus subject areas

  • Geology

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