Lockne is a

meteorite A meteorite is a rock (geology), rock that originated in outer space and has fallen to the surface of a planet or Natural satellite, moon. When the original object enters the atmosphere, various factors such as friction, pressure, and chemical ...

crater A crater is a landform consisting of a hole or depression (geology), depression on a planetary surface, usually caused either by an object hitting the surface, or by geological activity on the planet. A crater has classically been described ...

, located approximately south of the city of

Östersund Östersund (; ) is an Urban areas in Sweden, urban area (Stad (Sweden), city) in Jämtland in northern Sweden. It is the seat of Östersund Municipality and the capital of Jämtland County. Östersund is located at the shores of Sweden's fifth-larg ...

in northern Sweden. It has been suggested that it is a doublet with the nearby smaller

Målingen Crater Målingen was confirmed as an impact crater in 2014. It is located near the city of Östersund in northern Sweden. It is "probable" that it formed simultaneously with the nearby Lockne crater.Raul Rincon (2014)BBC News: "Ancient Earth hammered by ...

, apart.Raul Rincon (2014
BBC News: "Ancient Earth hammered by double space impact", 18 March 2014
accessed 19 March 2014. Computer simulations suggest that the

asteroid An asteroid is a minor planet—an object larger than a meteoroid that is neither a planet nor an identified comet—that orbits within the Solar System#Inner Solar System, inner Solar System or is co-orbital with Jupiter (Trojan asteroids). As ...

that created the Lockne crater was some in diameter, and the one that carved out Målingen crater was about across. It is in diameter and the age is estimated, based on accompanying chitinozoan

microfossil A microfossil is a fossil that is generally between 0.001 mm and 1 mm in size, the visual study of which requires the use of light or electron microscopy. A fossil which can be studied with the naked eye or low-powered magnification, ...

s, to be 458 million years (

Late Ordovician The Late Ordovician is the third and final epoch of the Ordovician period, lasting million years and spanning from around 458.2 to 443.1 million years ago. The rocks associated with this epoch are referred to as the Upper Ordovician Series. At ...

). The crater is exposed at the surface. Its fossils, typical of shallow marine environments, show it to be a marine target

impact event An impact event is a collision between astronomical objects causing measurable effects. Impact events have been found to regularly occur in planetary systems, though the most frequent involve asteroids, comets or meteoroids and have minimal effe ...

References

Impact craters of Sweden Ordovician impact craters Ordovician Sweden Sandbian Landforms of Jämtland County {{Jämtland-geo-stub