Sign in

Forgot password?

Login here

Not already registered? Sign up now

Hey friend, could you provide us a wikipedia URL with a good description of this protected area?

Please, be sure that you are suggesting an english language wikipedia URL (http://en.wiki....)

mark it as wrong

Vredefort Dome World Heritage Site

Dôme de Vredefort, South Africa

Transferring data

Legend
All Photos are provided by Panoramio. Photos are under the copyright of their owners.

Description

Vredefort crater is the largest verified impact crater on Earth, more than 300 km across. It is located in the present-day Free State Province of South Africa and named after the town of Vredefort, which is situated near its centre. Although the crater itself has long since eroded away, remaining geological structures at its centre are known as the Vredefort Dome or Vredefort impact structure. In 2005, the Vredefort Dome was added to the list of UNESCO World Heritage Sites for its geologic interest.

The asteroid that hit Vredefort is estimated to have been one of the largest ever to strike Earth (at least since the Hadean eon some four billion years ago), thought to have been approximately 5–10 km (3.1–6.2 mi) in diameter. The bolide that created the Sudbury Basin could have been even larger.

The original crater was estimated to have a diameter of roughly 300 km (190 mi), although this has been eroded away. It would have been larger than the 250 km (160 mi) Sudbury Basin and the 180 km (110 mi) Chicxulub Crater. The remaining structure, the "Vredefort Dome", consists of a partial ring of hills 70 km in diameter, and are the remains of a dome created by the rebound of rock below the impact site after the collision.

The crater's age is estimated to be 2.023 billion years (± 4 million years), which places it in the Paleoproterozoic era. It is the second-oldest known crater on Earth, a little less than 300 million years younger than the Suavjärvi Crater in Russia. In comparison, it is about 10% older than the Sudbury Basin impact (at 1.849 billion years).

The dome in the center of the crater was originally thought to have been formed by a volcanic explosion, but in the mid-1990s, evidence revealed it was the site of a huge bolide impact, as telltale shatter cones were discovered in the bed of the nearby Vaal River.

The crater site is one of the few multiple-ringed impact craters on Earth, although they are more common elsewhere in the Solar System. Perhaps the best-known example is Valhalla Crater on Jupiter's moon Callisto, although Earth's Moon has a number, as well. Geological processes, such as erosion and plate tectonics, have destroyed most multiple-ring craters on Earth.

The nearby Bushveld Igneous Complex (BIC) and Witwatersrand Basin were created during this same period, leading to speculation that the Vredefort bolide's mass and kinetics were of sufficient magnitude to induce regional volcanism. The BIC is the location of most of the world's known reserves of platinum group metals, while the Witwatersrand basin holds most of the known reserves of gold.

The Vredefort Dome World Heritage Site is currently subject to property development, and local owners have expressed concern regarding sewage dumping into the Vaal River and the crater site. The granting of prospecting rights around the edges of the crater has led environmental interests to express fear of destructive mining.

The Vredefort Dome in the center of the crater is home to three towns, namely Parys, Vredefort and Koppies. Parys is the largest and a tourist hub; both Vredefort and Koppies mainly depend on an agricultural economy.

On 19 December 2011, a broadcasting license was granted by ICASA to a community radio station to broadcast for the Afrikaans- and English-speaking members of the communities within the crater. The Afrikaans name Koepel Stereo (Dome Stereo) refers to the dome and announces its broadcast as KSFM. The station broadcasts on 94.9 MHz FM.

Coordinates: 27°0′S 27°30′E / 27.000°S 27.500°E / -27.000; 27.500

Description provided through Wikipedia. Is it incorrect? .

Latest activity in this protected area

  • 54b60831cce64518724facfcc0b2dc8c

    Protected Area updated by IUCN, facilitated by UNEP-WCMC

    almost 3 years ago

    Modified Name, Geometry, Management Authority and 6 more attributes see details >

Do you want to say something about this protected area? Start a thread

Nearest protected areas

Boskop Dam

Tweefontein

ABE Bailey

100% COMPLETE

Official Record

  • WDPA ID902483
  • NameVredefort Dome
  • Original NameDôme de Vredefort
  • Country / TerritoryZAF
  • Sub locationZA-FS
  • IUCN CategoryNot ApplicableWhat is this?
  • English DesignationWorld Heritage Site
  • Designation TypeInternational
  • StatusInscribed
  • Status Year2005
  • Reported Area km2301.11
  • Marinefalse
  • Governance TypeNot Reported
  • International Criteria(viii)
  • Management AuthorityNot Reported
  • Management Plan URLNot Reported

100%

complete

0

data gaps
Edit this data

Official Data Provider

IUCN (2012)


The boundaries and names shown, and the designations used on this map do not imply official endorsement or acceptance by the United Nations.

Details

Species information

  • 95

  • Iucn_red_white_small Logogbif

Data provided by GBIF and IUCN

Vertex foot

Download this data

KMZ CSV SHP
Polygon editing tools
close

Do you want to exit without save the changes?

Ajax-loader

Thanks friend, Could you tell us where you got this information?

Ouch! Looks like there are errors in your geometry

Close

Sorry, it is not possible to edit this geometry online. In the next few months we will be adding tools to edit complicated boundaries. Please try again soon!