Fig. 1: Topography and geology of Fennoscandia with superimposed seismic profiles.
From: Northern Scandinavian mountains supported by a low-grade eclogitic crustal keel
Location of maps is marked on top left inset. a The NNE-SSW oriented Scandes range has high topography in the northern (ND) and southern (SD) domes separated by a lower relief section. The Silver-Road profile is shown by a purple line with sources marked by red stars for onshore explosions and blue stars for first and last airgun stack (AGS) locations. Thick lines labelled (a–h) show locations of other seismic profiles and stippled ellipse marks the coverage by the Scanlips3D project, as illustrated in Fig. 3. b Geologic units23 of Fennoscandia shown on shaded relief topography. Thick red line shows the location of the Silver-Road profile with sources as in (a); black thin lines mark locations of other refraction and reflection profiles in the Baltic Shield21. Locations of temporary and permanent broad-band seismic stations are shown by black triangles. Green dashed line marks the inferred extent of the Trans-Scandinavian Igneous Belt (TIB).
