Asteroid impacts have arguably killed off more species than almost any other type of disaster since life began on Earth. The most famous of these, the Chicxulub impactor, killed the dinosaurs about 65 million years ago, along with 76% of all species on the planet at the time. But that was by no means the … Continue reading 'The Largest Impact Crater on Earth, 520 km Across, Might Be Hiding Under Australia'
Asteroid impacts have arguably killed off more species than almost any other type of disaster since life began on Earth. The most famous of these, the Chicxulub impactor, killed the dinosaurs about 65 million years ago, along with 76% of all species on the planet at the time. But that was by no means the worst disaster; as far as we can tell, it wasn’t even the biggest asteroid. That title currently goes to the Vredefort crater in South Africa.
They named the crater, which they estimate is around 520 kilometers in size, the Deniliquin structure. Trying to research a structure that massive is a difficult task, and made much more difficult the older the structure is. Drs. Glikson and Yeates estimate the Denliquin structure to be around 445 million years ago. That is a lot of time for erosion, sedimentation, and tectonic activity to take its toll on any structure on Earth, no matter how massive.
First is an assessment of the geophysical data of the region. Updates of that data, which culminated in 2020, point to a structure with a defined dome from a seismic event that is around 520 km wide. Other magnetic evidence abounds, such as “radial faults” that point away from what is thought to be the center of the impact structure. And there are some magnetic irregularities that could have been caused by magma swirling around closer to the surface after the impact.
Malaysia Latest News, Malaysia Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Scientists Uncover Source of Unusual Deformation in Earth’s Largest Continental RiftComputer simulations confirm that the African Superplume causes the unusual deformations and rift-parallel seismic anisotropy detected below the East African Rift System. Continental rifting involves a combination of stretching and fracturing that penetrates deep within the Earth, explains geophy
Read more »
Near Earth Orbit Network (NEON)NOAA’s Near Earth Orbit Network (NEON) Program will develop future low Earth orbit (LEO) environmental satellites. Low and medium Earth observations.
Read more »
Russia's Lunar Mission Captures Its First Views of Earth And the MoonLuna-25 will attempt to land on the Moon's south polar region on August 21.
Read more »
Take 30% off Oprah-Approved Cozy Earth Bedding With Our Exclusive CodeThis exclusive sale is a great excuse to give your bedding and loungewear collection a major upgrade ahead of fall.
Read more »
Opposition to wind power could impact New Jersey's climate change efforts | WNYCWNYC's Nancy Solomon looks at the well-organized opposition to wind power in New Jersey.
Read more »
Families owed millions in deposit refunds after one of Illinois' largest retirement communities files for bankruptcyMore than a month after one of Illinois’ largest retirement communities filed for bankruptcy, families are coming to terms with the fear they may not receive in full a substantial contractually owed refund they were once promised.
Read more »