The First Art Newspaper on the Net   Established in 1996 United States Tuesday, August 20, 2019


Massive meteorite impact area discovered in Australia by Australian National University scientists
Analysis showed the crust had fractured under intense heat and pressure at depths of more than 12 miles, according to the findings published in the journal Tectonophysics.


WASHINGTON (AFP).- A massive impact area from a huge meteorite that struck the Earth millions of years ago has been found in central Australia, scientists said Monday.

The study found signs of the 250-mile (400-kilometer) wide impact area deep inside the Earth's crust, Australian National University scientists said.

A surface crater from the strike is long gone, but by drilling over a mile deep into the earth in eastern and central Australia, scientists were able to determine where the massive rock hit the Earth.

Scientists believe the meteorite broke into two halves just before it hit Earth 300 to 600 million years ago in what would have been a devastating impact.

"The two asteroids must each have been over 10 kilometers across -– it would have been curtains for many life species on the planet at the time," said lead researcher Andrew Glikson from the university's archaeology and anthropology department.

Analysis showed the crust had fractured under intense heat and pressure at depths of more than 12 miles, according to the findings published in the journal Tectonophysics.

Magnetic modeling of the area showed deep swells in the crust where the large strike had pulled up rock from the Earth's iron and magnesium-rich mantle. 

Over the course of 4.5 billion years, Earth's history has been marked by periods of extreme environmental shifts due to events such as extraterrestrial impact or internal geological change.

"Large impacts like these may have had a far more significant role in the Earth's evolution than previously thought," Glikson said.

The impact would have sent massive clouds of ash and dust into the atmosphere, changing the planet's temperature and possibly causing the death of different species.

There is no indication that the meteorite discovered in Australia was as devastating as the one thought to have hit the earth 66 million years ago, causing the extinction of dinosaurs and other species.

And so far, scientists have yet to connect the meteorite strike to a specific period of extinction on the planet, suggesting the area may be far older than estimated.

"It's a mystery -- we can't find an extinction event that matches these collisions. I have a suspicion the impact could be older than 300 million years,” Glikson said.



© 1994-2015 Agence France-Presse





Today's News

March 24, 2015

Museo del Prado brings together for the first time four masterpieces by Van der Weyden

Adolf Hitler 1912 watercolor still life painting to be auctioned by Nate D. Sanders Auctions

Sotheby's to offer Roy Lichtenstein's 'The Ring (Engagement)' estimated in the region of $50 million

National Gallery gifted rare early Renaissance painting 'Christ carrying the Cross'

Anish Kapoor presents a series of giant and wildly expressive resin and silicon works

Musée d'Orsay opens retrospective covering Pierre Bonnard's whole career

Massive meteorite impact area discovered in Australia by Australian National University scientists

Sotheby's to offer the historic collection of Mary, Duchess of Roxburghe

New film offers a look at the life and career of famed photographer Sebastiao Salgado

First survey of photographs by provocative contemporary artist Piotr Uklański opens at the Metropolitan

SMU receives $45 million gift from Meadows Foundation, largest gift to University

'Shirin Neshat: The Home of My Eyes' marks the opening of YARAT Contemporary Art Centre

Minnesota Marine Art Museum unveils key version of 'Washington Crossing the Delaware'

Exhibition by Andrea Bergart, Benjamin Edmiston, and Jason Karolak to open at Cuevas Tilleard Projects

Jewellery as art: Unique pieces make a statement at Bonhams Fine Jewellery Sale

Miami-based de la Cruz Collection showcases art exhibit at Nova Southeastern University

Boscobel House & Gardens donates historic painting to the West Point Museum

Archival display of Francis Bacon’s show held at ICA in 1955 opens in London

Street-artist LUDO opens exhibition at Magda Danysz gallery in Shanghai

Pinball paradise lives on in Budapest basement

Strong results for the Lumsden Collection at Bonhams' Asian art sale

Bound to please: Book-making machines star at French fair

Daylight announces publication of Zalmaï: Dread and Dreams

Pavilion of Chile at La Biennale di Venezia: Poetics of Dissent by Paz Errazuriz and Lotty Rosenfeld

Most Popular Last Seven Days



1.- Conservation reveals Wellington Collection work was painted by Titian's Workshop

2.- New dinosaur discovered after lying misidentified in university's vaults for over 30 years

3.- Unseen Texas Chainsaw Massacre outtakes and stills sold for a combined $26,880

4.- National gallery reveals conserved Italian altarpiece by Giovanni Martini da Udine

5.- London's Tate Modern evacuated after child falls, teen arrested

6.- Bavarian State Minister of the Arts restitutes nine works of art

7.- Boy thrown from London's Tate Modern is French tourist visiting UK

8.- Child thrown from London gallery has broken spine, legs and arm

9.- £10 million Turner masterpiece may leave British shores

10.- Tourists banned from sitting on Rome's Spanish Steps



Museums, Exhibits, Artists, Milestones, Digital Art, Architecture, Photography,
Photographers, Special Photos, Special Reports, Featured Stories, Auctions, Art Fairs,
Anecdotes, Art Quiz, Education, Mythology, 3D Images, Last Week, .

 



Founder:
Ignacio Villarreal
(1941 - 2019)
Editor & Publisher: Jose Villarreal
Art Director: Juan José Sepúlveda Ramírez

Royalville Communications, Inc
produces:

ignaciovillarreal.org avemariasound.org juncodelavega.com facundocabral-elfinal.org
Founder's Site. The most varied versions
of this beautiful prayer.
Hommage
to a Mexican poet.
Hommage
       

The First Art Newspaper on the Net. The Best Versions Of Ave Maria Song Junco de la Vega Site Ignacio Villarreal Site
Tell a Friend
Dear User, please complete the form below in order to recommend the Artdaily newsletter to someone you know.
Please complete all fields marked *.
Sending Mail
Sending Successful