Subsidence of Oceanic Crust

Morris Jesup Spur and Rise north of Greenland – exploring present seabed features, the history of sediment deposition, volcanism and tectonic deformation at a Late Cretaceous/early Cenozoic triple junction in the Arctic Ocean

“…The spur split from the Yermak Plateau before Chron 13 ( ̴ 34 Ma.) when Greenland became part of the North American plate and should theoretically have subsided to its present depth 25 million years ago (Voelker, 2016). The contemporary subsidence history of another continental fragment, the Hovgard Ridge, is similar (Myhre et al, 1995;Knies et al, 2014).…”