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Earth's most ancient rocks, with an age of 4.28 billion years, have been found on the shore of Hudson Bay, Canada.


 prehistory Canada geology
A new technique has been helping scientists piece together how the Earth's continents were arranged 2.5 billion years ago. ... We really don't understand the [Earth's] history prior to Pangea.


 geology Zimbabwe Canada Pangea
Water was once widespread on Mars, data from a Nasa spacecraft shows, raising the prospect that the Red Planet could have supported life. ... Rocks of this age have largely been destroyed on Earth by plate tectonics. They are preserved on the Moon, but were never exposed to liquid water. So rocks containing phyllosilicates on Mars preserve a unique record of watery environments in the early Solar System, some of which could have been...


 water Mars geology tectonics astronomy extraterrestrial life solar system life prehistory
Life on Earth may have driven the evolution of the planet itself. The idea is that ancient microbes provided the chemical energy to create the Earth's continents - a nod to the Gaia hypothesis, in which life helps create the conditions it needs to survive. The theory would solve the puzzle of why the Earth's continental crust appeared when it did, and explain the presence of granite, a substance not found anywhere else in our...


 geology prehistory biology continent
Many recent earthquakes may have been the aftershocks of large quakes that occurred hundreds of years ago, according to scientists.


 toread earthquake history geology
Research has revealed details of the catastrophic Zanclean flood that refilled the Mediterranean Sea more than five million years ago. The flood occurred when Atlantic waters found their way into the cut-off and desiccated Mediterranean basin. The researchers say that a 200km channel across the Gibraltar strait was carved out by the floodwaters. Their findings, published in Nature, show that the resulting flood could have filled the basin...


 Mediterranean sea ocean flood geology
Mexico's Cave of Crystals stunned geologists when it was first discovered in 2000. The underground chamber contains some of the largest natural crystals ever found - some of the selenite structures have grown to more than 10m long.


 Mexico crystal geology cave
Red Sea coral reefs get their complex shape from an ancient 'seabed template', say scientists.


 Red Sea coral geology biology
They agreed that the world's highest mountain - which traverses the border of the two countries - should be recognised as being 8,848m tall. ... But geologists say that the estimates of both countries over the height of Mount Everest could be wrong. They say that the mountain is becoming higher as India is gradually pushed beneath China and Nepal because of shifting continental plates. In May 1999 an American team used GPS technology...


 geology Mount Everest China Nepal GPS growth
A coalition of geologists are challenging the way we look at global stone reserves, claiming that, unless smarter methods of preservation are developed, mankind will eventually run out of rocks.


 geology rock stone sustainability environment
Geologists working in the remote Afar region of Ethiopia say the ocean will eventually split the African continent in two, though it will take about 10 million years.


 Africa ocean geology Ethiopia Somalia
The Red Planet harbours rocks rich in carbonate minerals, suggesting there was more water there in the past than previously thought, say scientists.


 Mars chemistry geology extraterrestrial life water
Researchers have identified rocks that they say could contain the fossilised remains of life on early Mars.


 Mars life fossil evolution geology extraterrestrial life