Abstract

We have combined gravimetric, geothermal and magnetic data with seismic results to characterize the crust of the northeastern part of the Baltic Shield. The thickness of the crust varies between 31 and 48 km and four internal layers can be distinguished, each with different physical properties and possibly with different geological origins. A joint analysis of seismic and gravity data was used to construct maps of the Moho relief and of the crust-mantle transition layer. Our proposed one-dimensional geophysical crustal model of the Baltic Shield may be considered as a basis for more detailed investigations.

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