Chapter 11 Paleoproterozoic tectonic evolution
Publisher Summary The wealth of new data from the Fennoscandian Shield allows an attempt of a new comprehensive tectonic model for the Paleoproterozoic evolution of the Fennoscandian Shield. This chapter regards it as a testable model that can lead to a more thorough understanding of the processes that operated in the Fennoscandian Shield during the Paleoproterozoic. The tectonic models above have mainly focused on the evolution of the Svecofennian domain especially in the vicinity of the Archean-Proterozoic boundary. Most commonly, accretionary-type tectonics have been proposed to account for the Proterozoic crustal growth. The mappable boundaries of the Karelian craton in the northeast, west, and southwest probably delineate Paleoproterozoic sutures. The boundaries in the east and southeast are undefined and hidden under the Phanerozoic cover.