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FIRE 1 CMP 0-11 000 interpretation Interpretation

VSA Author:
Date Created: 2009-09-01

Interpretation by Korja et al. (2006). The FIRE 1 deep seismic reflection profile crosses over a major Palaeoproterozoic plate boundary in the Fennoscandian Shield, the Svecofennian – Karelian suture zone where Archaean Karelian craton and its cover have been juxtaposed with Palaeoproterozoic Svecofennian island arc rocks. Surface lithology combined with both variable area wiggle-trace sections and combination sections, where colour-coded smoothed envelope -section is overlain by biased variable area plot, are used as basis for the detailed interpretation of the uppermost 8 km of the crust, the overview of which is presented here. Archaean crust is present in the NE part of th profile; the Archaean-Proterozoic boundary zone at c. 3650–12100 CMP comprises the rest of the profile in this figure. At CMP 4150–4200, the Jormua ophiolite association exposed on the surface can be distinguished as a parallel set of bright reflections. For more details, see Korjaet al. (in: Kukkonen, Ilmo T. & Lahtinen, Raimo (eds.) 2006. Finnish Reflection Experiment FIRE 2001-2005. Geological Survey of Finland, Special Paper 43, 247 p., 15 apps. ISBN 951-690-963-9; see docs & links for a reference link).





Details:

  • Interpretation Administrator:
    • Taija Torvela
  • VSA Author:

Geological Interpretation

Deformation Structures
Normal Faults, Detachments, Imbricates

Igneous Features
Bodies

Basement
Shield, Moho

Geological Context

Plate Settings and Margins
Orogenic belts, Continental, Subduction Zone

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