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Tag: Earth

Meteorite bombardment likely to have created the Earth’s oldest rocks

Scientists have found that 4.02-billion-year-old silica-rich felsic rocks from the Acasta River, Canada -- the oldest rock formation known on Earth -- probably formed...

Study of material surrounding distant stars shows Earth’s ingredients ‘pretty normal’

The Earth's building blocks seem to be built from 'pretty normal' ingredients, according to researchers working with the world's most powerful telescopes. Scientists have...

Iron-silica particles unlock part of the mystery of Earth’s oxygenation

The oxygenation of Earth's atmosphere was thanks, in part, to iron and silica particles in ancient seawater, according to a new study by geomicrobiologists...

Chemical footprint in present-day atmosphere mimics that observed in ancient rock

Early Earth was a hot, gaseous, dusty and dynamic planet with an atmosphere and an ocean. Then its surface cooled and stabilized enough for...

What makes diamonds blue?

Blue diamonds -- like the world-famous Hope Diamond at the National Museum of Natural History -- formed up to four times deeper in the...

Sound waves reveal enormous diamond cache deep in Earth’s interior

There may be more than a quadrillion tons of diamond hidden in the Earth's interior, according to a new study from MIT and other...

Scientists discover Earth’s youngest banded iron formation in western China

The banded iron formation, located in western China, has been conclusively dated as Cambrian in age. Approximately 527 million years old, this formation is...

Oxygen levels on early Earth rose, fell several times before great...

Earth's oxygen levels rose and fell more than once hundreds of millions of years before the planetwide success of the Great Oxidation Event about...

Laser experiments lend insight into metal core at heart of Earth

Scientists have discovered fresh insights into the metallic core at the centre of our planet. The findings could aid understanding of how Earth was formed...

Scientists propose solution to ‘Gaia puzzle’

Scientists may have solved a long-standing puzzle over why conditions on Earth have remained stable enough for life to evolve over billions of years....

Why life on Earth first got big

Some of the earliest complex organisms on Earth -- possibly some of the earliest animals to exist -- got big not to compete for...

What caused the mass extinction of Earth’s first animals?

Fossil records tell us that the first macroscopic animals appeared on Earth about 575 million years ago. Twenty-four million years later, the diversity of...

Yosemite granite ‘tells a different story’ story about Earth’s geologic history

A team of scientists including Carnegie's Michael Ackerson and Bjorn Mysen revealed that granites from Yosemite National Park contain minerals that crystallized at much...

Seismologists use massive earthquakes to unlock secrets of the outer core

By applying new data and Princeton's supercomputers to the classic question of what lies beneath our feet, Princeton seismologist Jessica Irving and an international...

The bedrock below West Antarctica is rising surprisingly fast

An international team of researchers, with a new study published in Science with DTU Space as lead author, finds that the bedrock below the...

Better model of water under extreme conditions could aid understanding of...

Deep inside the Earth exist pockets of water, but the liquid there isn't like the water on the surface. When exposed to unimaginably high temperatures...

Site of the next major earthquake on the San Andreas Fault?

Many researchers hypothesize that the southern tip of the 1300-km-long San Andreas fault zone (SAFZ) could be the nucleation site of the next major...

Novel method for investigating pore geometry in rocks

Whether or not we realize it, mathematics permeates our lives in countless ways. Sometimes, the role of mathematics is difficult to grasp, but other...

Simple chemical process that may have led to the origin of...

Research led by Kuhan Chandru and Jim Cleaves from the Earth-Life Science Institute at Tokyo Institute of Technology, Japan, has shown that reactions of...

New insight into Earth’s crust, mantle and outer core interactions

A new study by the University of Liverpool, in collaboration with the Universities of Lancaster and Oslo, sheds light on a longstanding question that...

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