Figure 4

Figure 4.

Schematic Mesozoic paleogeographic reconstruction showing the role of the Canadian Arctic transform system (CATS) in opening of the Canada Basin and large magnitude extension in the Amerasian Basin. Modified after Patrick and McClelland (1995), Dickinson (2009), Miller et al. (2018), and Døssing et al. (2020). AMR—Alpha-Mendelev Ridge; CB—Canada Basin; CBL—Chukchi Borderland; ESB—East Siberian basins (see Nikishin et al., 2021); MB—Makarov basin; PB—Podvodnikov basin; SAR—south Amerasia ridge; SAZ—South Anyui suture zone. Extent of thin crust (<10 km) is from Lebedeva-Ivanova et al. (2019).