Never miss a story

Get subscribed to our newsletter


×
Earth's oldest known evolved rocks result of asteroids. Pixabay

The oldest evolved rocks on Earth are the consequence of asteroids colliding with the 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.


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

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.

You May Also Like to Read About Your Locations on Google- Here’s How You Can Find and Delete Your Locations Stored on Google

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)


Popular

qz.com

China is cracking down on cryptocurrency

A cryptocurrency is a digital/virtual currency, that is secured by cryptography (study of hiding information). There are over 6,500 cryptocurrencies in existence as of September 2021. The value of cryptocurrency is growing at a quick rate and analysts and experts are still expecting a sharp rise in the value of Bitcoin, the oldest, and most valuable cryptocurrency in the world. however, china doesn't seem to be on board with the idea of digital coins in its economy as it has banned dealing and trading in these digital tokens.

China has taken several decisions to curb the rise of cryptocurrency in its market since 2013 by putting in place increasingly stricter rules on virtual currencies. But on September 17th, China's central People's Bank of China (PBOC) announced that all activities from transactions made in cryptocurrency to crypto mining are deemed illegal including offering trading of digital assets, order matching, token issuance and derivatives. Anyone who's found guilty of being involved with cryptocurrencies and working for overseas platforms from within China will be severely punished. Chinese Government directed the banks to not provide any products or services such as trading, clearing and settlement for cryptocurrency transactions.

Keep Reading Show less
DRDO Twitter

"Akash Prime" was successfully tested by the DRDO by the ITR in Odisha's Chandipur

A new version of the Akash missile- "Akash Prime" was successfully tested by the Defence Research and Development Organisation (DRDO) at the Integrated Test Range in Odisha's Chandipur on Monday at around 4:30 pm. The missile intercepted and tore apart a high-speed unmanned aerial target mimicking enemy aircraft, in its first flight test after all the enhancements.

Akash Prime is equipped with an indigenous active Radio Frequency seeker to accurately locate the enemy aircraft. The upgrade includes an improved, Launcher, Multi-Function Radar and Command, Control and Communication system. The test was carried out amidst bad weather conditions and yet Akash Prime successfully detonated the threat proving the all-weather capability of the weapon system. The improvements also established that the new missile has comparatively more reliable performance under a low-temperature environment at higher altitudes

Keep Reading Show less
Photo by Kelly Sikkema on Unsplash

According to research, virtual learning has been proven to enhance retention of information and take up less time

"Education is the most powerful weapon which you can use to change the world."
-N
elson Mandela


Schools all across the world have been closed as a result of the COVID-19 outbreak. Over 1.2 billion children are out of school across the globe. (Reported by UNICEF). Because of this, education has changed immensely, with the introduction of e-learning, in which tutoring is provided remotely and using various digital platforms. According to research, virtual learning has been proven to enhance retention of information and take up less time, indicating that the changes produced by the coronavirus may be here to stay in the future.

Keep reading... Show less