technology-news

How Earth evolved billions of years ago

Washington, Nov 7 : A volcanic rock probe has helped scientists to unlock mysteries of how Earth was formed around 4.5 billion years ago.


Studies of basalt, the material that forms from cooling lava, are being used to develop a timeline of how the planet and its atmosphere were formed.

Scientists examined liquid basalt - or magma - at record high pressures and temperatures. Their findings suggest molten magma once formed an ocean within the Earth's mantle, comprising two layers of fluid separated by a crystalline layer.

Scientists agree that Earth formed around 4.5 billion years ago, at which time much of the planet was molten. As it cooled, Earth's crust was formed. Researchers are keen to pin down how the planet's core and crust took shape and how its volcanic activity developed.

The discovery by a European team of scientists involving the University of Edinburgh, using hi-tech laboratories, supports current theories of how and when our planet evolved. To recreate conditions at the Earth's core, scientists placed basalt under pressures equivalent to almost one billion times that of Earth's atmosphere and temperatures above 2000 Celsius.

They found that at high pressure, silicon atoms in the basalt change the way in which they form bonds, which results in a denser magma. Their discovery helps pinpoint how magma behaves deep in the Earth and is a missing piece in the puzzle of how Earth's core formed.

The study is published in journal Nature.

--ANI (Posted on 07-11-2013)

technology-news headlines

Video games of the future to adapt to players' mood

World's oldest woman's blood hints at lifespan limits

How ravens maintain their social relations

Microbes help understand evolution of human language

Radiation exposure puts astronauts at risk of cognitive impairment: Study

Iceberg larger that island of Guam drifts away from Antarctic glacier

Manned mission to Mars necessary for our species to survive, says NASA chief

Gene therapy helps reverse loss of memory in mice suffering from Alzheimer's

New technology helps detect when drivers are about to nod off

Technology to catch dozing drivers on the go

This space selfie not to be missed!

Mysterious 'duck' sound came from rare antarctic whales

Quick Links: Goa | Munnar | Pondicherry | Free Yearly Horoscope '2014

Comments

Your e-mail:


Your Full Name:


Type verification image:
verification image, type it in the box

Message:

Back to Top