https://www.bas.ac.uk/data/our-data/publication/the-nordenskjold-formation-of-the-northern-antarctic-peninsula-an-upper-jurassic-radiolarian-mudstone-and-tuff-sequence/
The Nordenskjold Formation of the northern Antarctic Peninsula: an Upper Jurassic radiolarian...
antarctic peninsulaupper jurassicnordenskjoldformationnorthern