GCMH16 Gardnos Meteorite Crater EarthCache (Earthcache) in Buskerud, Norway created by Brennoguten (Via Earthcache Master)

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GCMH16 ▼

A cache by Brennoguten (Via Earthcache Master) Message this owner

Hidden : 1/16/2005

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Size: Size: not chosen (not chosen)

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Geocache Description:

Gardnos Meteorite Crater EarthCache. The main coordinates refer to a safe place to park inside the meteorite crater. You will also find the centre for information nearby.

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650 million years ago a meteorite with enormous speed and power hit the surface of the Earth in Gardnos, Nesbyen. The interest in Gardnos was taken when Oslo Energy in the 1960s had problems dynamiting a water tunnel through the crater area. They had to increase the amount of dynamite by 30%. At first, the geologists thought that Gardnos was a vulcanic crater. In 1990, the geologists Naterstad and Dons found the answer in microscopic studies. Gardnos was one of the most accessible meteorite craters in the world! A meteorite with a 200-300 m diameter struck this area and a 5 km diameter crater was produced by the enormous amount of energy established by the impact.

To log this visit, send a photo of yourself with a GPS in the crater along with the number of people who visited with you.

A visit at Gardnos Meteorite Crater centre gives you a better understanding of the forces exposed in this area. AN EXPLOSIVE HISTORY Guided field trips every Wednesday at 6 p.m. A 6 km long guided walk in the meteorite crater. Everyone is provided with simple field equipment.
The service centre is open between the 12th of June and the 31st of August. The opening hours are from 10.00 to 20.00.

Learn more about “Garnos meteorite crater” at these sites:

www.toyen.uio.no

www.stud.ntnu.no

www.meteoritearticles.com

You can also find a regular cache in this area placed by Eirik and Karin.
The link for this is here: Challenge #20 - Garnås by Eirik og Karin

Befor the impact, about 650 million years ago:
The moment of impact:
About 10 minutes after the impact:

The crater is gradually filled with sand and clay:
To-day`s landforms: