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You are standing on the side of a small drainage eroded into the tundra, looking in the direction of the green arrow. You are part way up the cliff as shown by the blue arrow.

There is a small pod of shells eroding here from a fold in the sediments. The pod appears to have been a small lens of shelly gravel that has been rotated as the sediments were deformed so that it is now lying vertically in a limb of the fold.

shelly gravel lens from distance in fold shelly gravel pod in fold
shell fragments in shelly gravel
Shells in Shelly Gravel
Enlargement of Green Circle

This is a small lens of shell and shell fragments in a fine gravel. The shells include both bivalves and gastropods. Most of the shells are just fragments, but some are intact. You can collect fossils and a sample of the fossils for amino acid racemization from here by pressing the buttons below.

pebble in shelly gravel
Pebbles in shelly gravel
Enlargement of Blue Circle

Lots of pebbles are evident as well as the shell fragments. Most of the pebbles are black in color. This is a conglomerate. It is composed of a poorly sorted mixture of silt, sand, shell fragments, and pebbles. The matrix inbetween the pebbles and fossils is mostly sand.

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: See beginning of trip.
Part of the Athro, Limited web site.
Copyright © 2000 Athro, Limited. All Rights Reserved.
Written by Paul J. Morris
Maintained by Athro Limited
Date Created: 17 Jan 2000
Last Updated: 31 Jan 2000