Northwind sedimentary basin 

(Cenozoic) 

(Beaufort Sea, Chukchi Sea, and adjacent area, unit Czs)

Consists chiefly of Cenozoic sedimentary rocks that are greater than 2,000 m thick, as indicated by 
bathymetry and gravity modeling. Underlain by oceanic or attenuated continental crust. A seismic-
reflection profile from the east flank of the basin near 75  N latitude indicates that the sedimentary section 
in the basin is more than 1.7 km thick. REFERENCES: Grantz and others, 1975, 1990.