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Earth’s oldest known evolved rocks result of asteroids

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Sydney, Aug 14: The oldest evolved rocks on Earth are the consequence of asteroids colliding with the planet 4 billion years ago, an Australian research released on Tuesday revealed.

The study by the Curtin University suggests that the rocks, part of the Acasta Gneiss Complex in northwest Canada, are the result of asteroids smashing into the Earth and melting its crust, allowing evolved, or granitic, rocks to form, reports Xinhua news agency.

What led scientists to suggest that they were formed in this way was firstly, the composition of the rocks is different from the those typical of the Earth’s ancient crust.

“The only known evolved rocks from the Hadean eon are those in northwest Canada, which have chemical compositions clearly distinct from those that dominate ancient continental crust worldwide, suggesting they were formed in a different way,” research co-author professor Phil Bland said.

Secondly, the rocks were melted at very low pressures, equivalent to the uppermost few kilometres of crust, meaning the event happened closer to the Earth’s surface.

“The melting of these rocks at such shallow levels is most easily explained by meteorite impacts, which would have supplied the energy to attain the extreme temperatures required for melting,” lead researcher Tim Johnson said.

This period, around 4 billion years ago, was dominated by a barrage of asteroid impacts that would have caused widespread melting and recycling of the Earth’s surface.

“Consequently, there are almost no rocks preserved from Earth’s formative Hadean eon,” Bland said.

Meaning these rocks were rare survivors from a very different time on Earth.

IANS

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Watch Prince Harry stealing samosa at Meghan Markle’s event

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New Delhi, Sep 22: Prince Harry was caught on camera sneaking samosas from her wife’s Meghan Markle’s cookbook event. 

The Duke of Sussex had hosted an event at Kensington Palace to mark the launch her book “Together: Our Community Cookbook” on
Thursday and in the quirkiest way her husband was seen stealing Indian Snack ‘Samosas’.

The British television network, ITV shared a video on the @itvnews Twitter account on September 20.

In the video, Harry can be seen trying to hide the samosa as he caught red-handed. Later, he smiled and casually walked away checking his surroundings.

Meghan’s book features recipes from a group of women whose community was affected by the Grenfell Tower fire that claimed more than 70 lives.

As the video went viral, Twitterati’s just can’t stop laughing at the Royal Prince’s cheeky act.

WeForNews 

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Attack on Iranian military parade : 24 killed, 53 wounded

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Tehran, Sep 22 : At least 24 people have been killed and 53 wounded in an attack when  terrorists disguised as Islamic Revolution Guards Corps (IRGC) and Basiji (volunteer) forces opened fire at a military parade in the southwestern Iranian city of Ahvaz.

The parade was part of nationwide celebrations in Iran to mark the 30th anniversary since the end of the eight-year war with Iraq that started in September 1980 and ended in August 1988.

Those killed in Saturday’s attack included members of the Revolutionary Guard and “women and children” who had come to watch the parade, the Iranian state-run IRNA news agency said.

“The terrorists disguised as Islamic Revolution Guards Corps (IRGC) and Basiji (volunteer) forces opened fire during the parade,” Governor of Khuzestan Gholam-Reza Shariati was quoted as saying by IRNA news agency.

Fars news agency said the attack started at 9 a.m. and appeared to involve four gunmen. The attackers shot from a park near the parade and were wearing military uniforms.

“The terrorist team was annihilated, two of them were killed and other two were arrested. One of the detained terrorists was injured,” said Shariati.

Military personnel and a journalist were among those killed.

Iranian Foreign Minister Mohammad Javad Zarif blamed “a foreign regime” backed by the US for the attack. “Terrorists recruited, trained, armed and paid by a foreign regime have attacked Ahvaz,” he said in a tweet, adding: “Iran holds regional terror sponsors and their US masters accountable for such attacks.”

Earlier, Iranian President Hassan Rouhani used the occasion of the military parade to compare US President Donald Trump to the former Iraqi dictator Saddam Hussein, according to Press TV.

Speaking at a military rally in Tehran, he said Trump will fail in the “economic and psychological war” he’s launched against Iran, just as Hussein failed in his 8-year war against the Islamic Republic”.

“Iran will neither abandon its defensive weapons nor will reduce its defence capabilities,” Rouhani said.

“Rather it will increase its defence power day by day. The fact that they are angry at our missiles shows that these are the most influential weapons Iran has.”

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Disappointed at India’s ‘negative, arrogant’ reply: Imran Khan

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Islamabad, Sep 22: Pakistan’s Prime Minister Imran Khan on Saturday expressed “disappointment” at India’s response calling it “arrogant and negative” after New Delhi called off talks between the foreign ministers of the two countries, blaming Islamabad for glorifying terrorism.

“Disappointed at the arrogant and negative response by India to my call for resumption of the peace dialogue,” tweeted Khan.

“However, all my life I have come across small men occupying big offices who do not have the vision to see the larger picture.”

Indian External Affairs Ministers Sushma Swaraj and her Pakistani counterpart Shah Mehmood Qureshi were set to meet on the sidelines of the UN General Assembly in New York next week, that could have marked the first thaw in bilateral ties that have steadily deteriorated.

The Indian government said on Friday that it cancelled talks with Pakistan following two “deeply disturbing” developments that led to Islamabad’s “evil agenda” being exposed.

In one incident, terrorists abducted and gunned down three policemen in Jammu and Kashmir, marking a sharp escalation in militancy in the state which India says is backed by Pakistan.

Also, Islamabad had issued postage stamps in memory of Burhan Wani, a Hizbul Mujahideen leader who was shot dead by Indian security forces in July 2016, sparking widespread street protests.

Qureshi had called the development “unfortunate” and claimed that the decision was taken by New Delhi “under internal pressure”.

“The reasons cited by the Indian side for the decision to cancel the foreign ministers’ meeting, within 24 hours of its public confirmation, are entirely unconvincing,” the Pakistan Foreign Ministry had said in a statement.

IANS

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