The Labrador water is a northwestward expansion for the North Atlantic Ocean, through the Charlie-Gibbs break area into the south to Davis Strait into the north (Figure 2), which separates southern Greenland from Labrador. Rifting and breakup of those margins started through the Early Cretaceous (
85 Ma) predicated on borehole information (Balkwill 1990). Volcanics of Cretaceous and early Tertiary age onlap the rift structures and synrift sediments. In the near order of Davis Strait, your final amount of intense volcanism within the Paleocene (
60 Ma) is associated with the North Atlantic Magmatic Province (Gill et al., 1999). Unlike the Newfoundland and Nova Scotia margins towards the south, the pre-existing continental crust differs significantly with its many years and crustal properties: through the Paleozoic Appalachian Province when you look at the south, through the belated Proterozoic Grenville Province into the Early Proterozoic Makkovik Province, last but not least the Archean Nain Province (Figure 9). A review that is recent of properties among these crustal devices, centered on outcomes through the Lithoprobe ECSOOT system, is written by Hall et al. (2002).
Figure 9. Maps for the Labrador margin showing (a) total sediment depth and (b) free-air gravity. Sedimentary basins and terranes that are continental
Following rifting, subsequent seafloor distributing within the Labrador water is documented by magnetic lineations (Roest and Srivastava, 1989), beginning first when you look at the south throughout the belated Cretaceous (
Continue reading “Labrador Margin 125 Ma) and finished throughout the belated Cretaceous (“