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Sketch section through Cretaceous Sediments, Nulavik, and Tuapuktushak at JBG 20
Sketch section near entrance of Gully at Section 20

At the base of this stratigraphic section are several meters of interbedded Cretaceous silts and well indurated sandstones. Above these are about two meters of poorly consolidated sandy silt overlain by several meters of folded sands and silts.


jbg sect 20 beach jbg section 65 beach chukchi sea up gully at jbg65 up gully at jbg 20 tuap and karmuk at jbg 65 karmuk at jbg 20 Cretaceous Nualvik tuap karmuk fines peat
Sources: The chief reference on the stratigraphy of the Gubik is (Brigham,1985). The best reference on the fossil molluscs from the Gubik is still (MacNeil, 1957). Recent papers on the age and climate history of these deposits include (Brigham-Grette and Carter, 1992; Kaufman and Brigham-Grette, 1993 Brigham-Grette and Hopkins, 1995).
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Date Created: 17 Jan 2000
Last Updated: 17 Jan 2000