Provocations #179: Twenty two million year old astrobleme

• Other Authors: Roberts, Walter (author)
• Format: Text
• Language: English
• Published: 1987
• Subjects: Arctic; Canada; Devon Island; Greenland
• Online Access: http://nldr.library.ucar.edu/repository/collections/WOR-000-000-000-176

Dr. Roberts explores the Houghton Astrobleme west of Greenland. It was formed when an asteroid struck the Arctic Devon Island in Canada 22 million years ago. Walter Orr Roberts informal series, "Provocations." Each issue consists of provocative comments related to scientific issues that mo...