The remains of the sea today form a suture stretching across northern Europe (Tornquist Zone).
[1] There are faunal, palaeomagnetic, palaeogeographic, and apparent polar wander path evidence for the timing of closure for Eastern Avalonia (England, Wales and southern Ireland) and Baltica.
[2] The Baltica-Avalonia collision also resulted in that the Rheic Ocean ceased to expand south of Avalonia around 450 Ma, in huge magmatism in Avalonia, gigantic ash fall in Baltica, and metamorphism in present-day northern Germany.
[3] The suture resulting from closure of the Tornquist Sea may be seen in eastern England and the Lake District as an arc of igneous rocks belonging to the Ordovician.
The volcanic series in eastern England, the Ardennes and the Northern Phyllite Belt originated between the Tornquist Sea and the Rheic Ocean during the Ordovician and Silurian.