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Volcanoes: Plumes of rock that feed volcanic hotspots are surprisingly cold

Geologists may need to come up with a new explanation for the sources of volcanic activity in places like Iceland and Hawaii

Hawaii , United-states , California , Iceland , Cambridge , Cambridgeshire , United-kingdom , Pahoa , Leilani-estates , Oliver-shorttle , Los-angeles , Alex-wilkins

Ideas, Inventions And Innovations : Traces of Earth's Early Magma Ocean Identified in Greenland Rocks

Ideas, Inventions And Innovations
Traces of Earth’s Early Magma Ocean Identified in Greenland Rocks
New research led by the University of Cambridge has found rare evidence – preserved in the chemistry of ancient rocks from Greenland - which tells of a time when Earth was almost entirely molten.
Isua in Greenland
Credit: Hanika Rizo / University of Cambridge
The study, published in the journal Science Advances, yields information on an important period in our planet’s formation, when a deep sea of incandescent magma stretched across Earth’s surface and extended hundreds of kilometres into its interior.
It is the gradual cooling and crystallisation of this ‘magma ocean’ that set the chemistry of Earth’s interior – a defining stage in the assembly of our planet’s structure and the formation of our early atmosphere.

Iceland , Greenland , Cambridge , Cambridgeshire , United-kingdom , Isua , Kommune-kujalleq , Hawaii , United-states , Erin-martin-jones , Helenm-williams , Oliver-shorttle

Traces of Earth's Early Magma Ocean Identified in Greenland Rocks – Courthouse News Service

Traces of Earth's Early Magma Ocean Identified in Greenland Rocks – Courthouse News Service
courthousenews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from courthousenews.com Daily Mail and Mail on Sunday newspapers.

Greenland , Cambridge , Cambridgeshire , United-kingdom , Isua , Kommune-kujalleq , Hawaii , United-states , Oliver-shorttle , Hanika-rizo , Helen-williams , University-of-cambridge

Traces Of The Primordial Magma Ocean Found For The First Time

The rocks of Greenland's Isua supracrustal belt look just like modern sea floor basalt. But this outcrop, which was first described in the 1960s, is the oldest exposure of rocks on Earth. It is known to contain the earliest evidence of microbial life and plate tectonics and now the primordial magma ocean. Image Credit: Hanika Rizo
The Earth was once entirely covered by an ocean of magma, scientific accounts tell. We've never had direct proof of this other than deducing it from the conditions of the era. Now, however, rocks have been found containing crystals that appear to have cooled out of this molten sea, taking us as far back in the chronology of the planet as it is possible to go. If correct, these observations would change our thinking about our present as well as our past, particularly hotspot volcanoes, of which Hawaii is the most famous example.

Australia , Cambridge , Cambridgeshire , United-kingdom , Hawaii , United-states , Oliver-shorttle , Helen-williams , Cambridge-university , Jack-hills , Science-advances

Traces of Earth's early magma ocean identified in Greenland rocks

New research led by the University of Cambridge has found rare evidence - preserved in the chemistry of ancient rocks from Greenland - which tells of a...

Iceland , Greenland , Cambridge , Cambridgeshire , United-kingdom , Isua , Kommune-kujalleq , Hawaii , United-states , Helenm-williams , Oliver-shorttle , Hanika-rizo

Traces of primordial Earth's magma ocean found hiding in Greenland's rocks

Hidden in the ancient rocks of Greenland, scientist have found the geochemical signatures of Earth's early history, a time when the planet was one big ocean of magma.

Greenland , Cambridge , Cambridgeshire , United-kingdom , Canada , Isua , Kommune-kujalleq , Hawaii , United-states , Oliver-shorttle , Hanika-rizo , Helen-williams