Lycksele环结构，仍然没有证据证明撞击的起源

IF 1.2 4区地球科学 Q2 GEOLOGY Gff Pub Date : 2020-01-24 DOI:10.1080/11035897.2019.1701547

A. Holmqvist, C. Alwmark, H. Dypvik, O. Nilsen

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引用次数: 0

摘要

瑞典100多公里宽的Lycksele环结构的起源多年来一直困扰着地球科学家。在这篇简短的文章中，我们介绍了为寻找撞击证据而进行的现场分析、详细采样和实验室分析的结果，例如矿物中的破碎锥和冲击特征。这两种方法都给出了否定的结果，因此既不能证实也不能拒绝撞击的起源。然而，Lycksele环的圆形结构及其中央隆起是大型复杂撞击构造的典型特征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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

ABSTRACT 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.

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来源期刊

Gff 地学-地质学

CiteScore

2.80

自引率

10.00%

发文量

审稿时长

>12 weeks

期刊介绍： GFF is the journal of the Geological Society of Sweden. It is an international scientific journal that publishes papers in English covering the whole field of geology and palaeontology, i.e. petrology, mineralogy, stratigraphy, systematic palaeontology, palaeogeography, historical geology and Quaternary geology. Systematic descriptions of fossils, minerals and rocks are an important part of GFF''s publishing record. Papers on regional or local geology should deal with Balto-Scandian or Northern European geology, or with geologically related areas. Papers on geophysics, geochemistry, biogeochemistry, climatology and hydrology should have a geological context. Descriptions of new methods (analytical, instrumental or numerical), should be relevant to the broad scope of the journal. Review articles are welcome, and may be solicited occasionally. Thematic issues are also possible.