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

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...

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Bibliographic Details
Published inGFF Vol. 142; no. 2; pp. 96 - 99
Main Authors Holmqvist, Anders, Alwmark, Carl, Dypvik, Henning, Nilsen, Odd
Format Journal Article
LanguageEnglish
Norwegian
Published Stockholm Taylor & Francis 02.04.2020
Taylor & Francis Ltd
Geological Society of Sweden
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Summary: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 minerals. Both approaches gave negative results and consequently an impact origin could neither be confirmed nor rejected. The circular structure of the Lycksele ring and its central uplift are, however, typical features of large, complex impact structures.
ISSN:1103-5897
2000-0863
2000-0863
DOI:10.1080/11035897.2019.1701547