Search > FInnish Reflection Experiment (FIRE) 2001-2005 Survey > FIRE 2A Regional Project


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FIRE 2A CMP 2200-5400 Scene

VSA Author: Taija Torvela
Interpretations: 1
Date Created: 2010-11-18

Perspective view of the uppermost 20 km of the southern part of the line 2A. The data have been structurally smoothed and a variance seismic attribute has been superimposed, in order to reduce noise and to emphasise subvertical features and reflection disruptions. The original processing was done by Pekka Heikkinen. See Survey docs & links for a location map.



Interpretations related to this Scene

A folded high-grade shear zone interpretation Interpretation

VSA Author: Taija Torvela, Annakaisa Korja
Date Created: 2010-11-18

This illustration shows a high-grade (granulite facies), gently dipping, syn-orogenic shear zone that has been folded and partly inverted during the late stages of the Svecofennian orogeny (Palaeoproterozoic). It possibly represents a detachment zone in the upper mid-crust, formed during orogen-parallel extension induced by the mobilisation of the rheologically weakened mid-crust. The...



Details:

  • Scene Administrator:
    • Taija Torvela
  • VSA Author:
    • Taija Torvela

Geological Interpretation

Basement
Shield, Moho

Geological Context

Plate Settings and Margins
Orogenic belts, Continental

Tectonics
Orogenic Belt

Geographic Context

Physical Geography
Continents

Political Geography
Finland, Republic of

Geophysics

Survey Information
Multichannel 2D, Onland, >10s, Migrated

Data Presentation
Amplitude, Reflectivity, Vertical Scale - Depth

Image Type
Vertical Profile