un_Vredefort.jpg
Vredefort Dome : 2005, 자연, South Africa
http://whc.unesco.org/en/list/1162

요하네스부르크 서부에 있는 운석 충돌 지역으로 가장 크고 오래된 것으로 추정된다. 20억년전 직경 10km에 달하는 거대 운석이 떨어진 것으로 보이며 이것이 직경 300km에 달하는 거대한 돔을 형성한 것으로 알려져있다.

Vredefort Dome, approximately 120 km south-west of Johannesburg, is a representative part of a larger meteorite impact structure, or astrobleme. Dating back 2,023 million years, it is the oldest astrobleme yet found on Earth. With a radius of 190 km, it is also the largest and the most deeply eroded. Vredefort Dome bears witness to the world’s greatest known single energy release event, which had devastating global effects including, according to some scientists, major evolutionary changes. It provides critical evidence of the Earth’s geological history and is crucial to understanding of the evolution of the planet. Despite the importance of impact sites to the planet’s history, geological activity on the Earth’s surface has led to the disappearance of evidence from most of them, and Vredefort is the only example to provide a full geological profile of an astrobleme below the crater floor.

SouthAfrica-UNESCO World Heritage



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