1. The Late Precambrian Toby Formation of British Columbia, Idaho and Washington;Aalto,1981
2. Glacigenic rocks of the Upper Tindir Group, east-central Alaska;Allison,1981
3. Precambrian tillites of the Conception Group of the Avalon Peninsula, southeastern Newfoundland;Anderson,1981
4. Possible Vendian tillites in eastern Poland;Areń,1981
5. Age and stratigraphic tectonic significance of Proterozoic diabase sheets, Mackenzie Mountains, northwestern Canada;Armstrong;Can. J. Earth Sci.,1982