The Lycksele ring structure - still no proof of an impact origin

• Published in: GFF Vol. 142; no. 2; pp. 96 - 99
• Main Authors: Holmqvist, Anders, Alwmark, Carl, Dypvik, Henning, Nilsen, Odd
• Format: Journal Article
• Language: English; Norwegian
• Published: Stockholm Taylor & Francis 02.04.2020; Taylor & Francis Ltd; Geological Society of Sweden
• Subjects: Earth and Related Environmental Sciences; Geologi; Geology; Geovetenskap och miljövetenskap; Lycksele ring structure; Minerals; Natural Sciences; Naturvetenskap; possible astrobleme; Possible impact crater; Ring structures; Shatter cones; Swedish Lapland; Uplift

The origin of the more than 100 km wide Lycksele ring structure in Sweden has puzzled geoscientists for years. In this short note we present results from field analysis, detailed sampling and laboratory analysis executed in search for evidence of an impact, e.g. shatter cones and shock features in m...