Editing Cambrian (section)

=== Baltica ===
During the Cambrian, Baltica rotated more than 60° anti-clockwise and began to drift northwards.<ref name="Domeier-2016" /> This rotation was accommodated by major strike-slip movements in the Ran Ocean between it and Gondwana.<ref name="Torsvik-2017" />

Baltica lay at mid-to-high southerly latitudes, separated from Laurentia by the Iapetus and from Gondwana by the Ran Ocean. It was composed of two continents, [[Baltic Shield|Fennoscandia]] and [[Sarmatian craton|Sarmatia]], separated by shallow seas.<ref name="Torsvik-2017" /><ref name="Domeier-2016" /> The [[sediment]]s deposited in these [[Unconformity|unconformably]] overlay Precambrian [[Basement (geology)|basement]] rocks. The lack of coarse-grained sediments indicates low lying [[topography]] across the centre of the craton.<ref name="Torsvik-2017" />

Along Baltica's northeastern margin subduction and arc magmatism associated with the Ediacaran [[Timanide Orogen|Timanian Orogeny]] was coming to an end. In this region the early to middle Cambrian was a time of non-deposition and followed by late Cambrian rifting and sedimentation.<ref name="Domeier-2018">{{Cite journal |last=Domeier |first=Mathew |date=2018 |title=Early Paleozoic tectonics of Asia: Towards a full-plate model |url=https://doi.org/10.1016/j.gsf.2017.11.012 |journal=Geoscience Frontiers |volume=9 |issue=3 |pages=789–862 |doi=10.1016/j.gsf.2017.11.012 |bibcode=2018GeoFr...9..789D |issn=1674-9871|hdl=10852/71215 |hdl-access=free }}</ref>

Its southeastern margin was also a [[convergent boundary]], with the accretion of island arcs and microcontinents to the craton, although the details are unclear.<ref name="Torsvik-2017" />