Granby vs Tvären
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Granby
Granby is a meteorite impact crater in Sweden with an estimated diameter of about 3 kilometers. It formed roughly 470 million years ago, during the Middle Ordovician period, when an extraterrestrial body struck the Earth's surface. The structure is described as relatively well preserved for its age. Granby is of interest to geologists because its form and impact evidence record a collision during...
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Tvären
Tvären is a meteorite impact structure on the Baltic coast of Sweden. The impact produced a circular bay approximately 2 kilometers across, making the site visible in the coastal landscape. Its formation is estimated at roughly 460 million years ago, during the Ordovician period. Tvären is studied as an example of an impact structure partly expressed in a marine or coastal setting.
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