Start Dating of the vredefort dome

Dating of the vredefort dome

It resulted from a meteorite 10km in diameter crashing into earth two billion years ago.

It is also the second-oldest impact structure with visible evidence at Earth's surface. A core of basement granite marks the center of the Vredefort Crater.

This core is surrounded by inclined rock units that dip away from the granite core in all directions to form a structural dome.

She added that her department would be embarking on a consultation process towards final proclamation of the area as a World Heritage Site.“The management authority will be given full powers and resources to manage the area in terms of relevant policies in order to maintain the highest management standards in terms of an integrated management system and ensure full compliance with Unesco World Heritage prescripts and South Africa’s World Heritage Convention Act of 1999,” said the minister.

Vredefort Crater cross-section: This cross-section shows the structure of the Vredefort Impact Crater at a time shortly after it was formed.

The feature marked "Vredefort Dome" is an area of uplifted strata in the center of the crater.

The Vredefort Impact Crater was formed when an asteroid struck Earth about two billion years ago in an area that is now the country of South Africa.

Today it still has a central uplifted dome surrounded by a concentric ring of ridges.

These are visible in the deformed bedrock that was once below the original crater floor.

It was gazetted in December 2007, but has not yet been proclaimed due to concerns raised by landowners.

The signing of the agreement will pave the way for the proclamation of the area and appointment of a management authority which will serve as a precursor for the development of an integrated management plan.

This dome-shaped feature is about 70 kilometers in diameter and is known as the "Vredefort Dome." Dipping rock units in the northwestern portion of the dome form a semicircular pattern of surface ridges that can be recognized on topographic maps and satellite images.