Summary of lithostratigraphy and stratigraphic correlations in piston cores from Northwind Ridge, Arctic Ocean, from USCGC Polar Star, 1988

Abstract

Two thin winnowed sand beds ~ indicated by arrows in core 7 contain rare foraminifers of which 80 to 90 percent are of Pleistocene age and 10 to 20 percent of Albian age. Siltstone pebbles and cobbles in cores 1, 2, and 7 in this interval contain foraminifer faunules of early Albian to Cenomanian age. \L After Clark and others, 1980. ^XXVXXx Unconformity N Base of Holocene not determined paleontologically Figure 3. Age range of matrix and extraformational clasts in piston cores from Northwind Ridge, Arctic Ocean, collected by U.S. Geological Survey from U.S. Coast Guard Cutter Polar Star in September, 1988. Lithostratigraphic units after Clark and others (1980). Base of Holocene not determined paleontologically.