Kärdla (also Kärdla astrobleme) is a
meteorite crater near the town of
Kärdla
Kärdla (; sv, ; german: Kertel) is the only town on the island of Hiiumaa, Estonia. It is the capital of Hiiu County and the administrative center of Hiiumaa Parish.
Geography
Kärdla is located on the northeastern coast of Hiiumaa, by the T ...
in
Estonia
Estonia, formally the Republic of Estonia, is a country by the Baltic Sea in Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the sea across from Sweden, to the south by Latvia, a ...
.
It is 4 km (2.5 mi) in diameter and its age is estimated to be about 455 million years (
Late Ordovician
The Ordovician ( ) is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya.
...
). The crater is not exposed at the surface.
Its formation has been associated with the breakdown of 100km asteroid, that might have also resulted in the
Tvären and
Lockne craters in Sweden among others.
[A rain of L-Chondrites in the Thorsberg quarry at Kinnekulle, southern Sweden-Thomas Müller TU Bergakademie Freiberg, Germany.]
References
Impact craters of Estonia
Ordovician impact craters
Landforms of Hiiu County
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