News tagged with upper mantle

Probing iron chemistry in the deep mantle

Carbonates are a group of minerals that contain the carbonate ion (CO32-) and a metal, such as iron or magnesium. Carbonates are important constituents of marine sediments and are heavily involved in the planet's deep carbon ...

dateMay 15, 2015 in Earth Sciences
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'Highway from hell' fueled Costa Rican volcano

If some volcanoes operate on geologic timescales, Costa Rica's Iraz├║ had something of a short fuse. In a new study in the journal Nature, scientists suggest that the 1960s eruption of Costa Rica's largest stratovolcano was ...

dateJul 31, 2013 in Earth Sciences
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When continents formed

A new way to calculate the age of the Earth's crust has been developed by researchers from the University of Bristol and the University of St Andrews.

dateJan 13, 2011 in Earth Sciences
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Looking for a new gold mine? We've got the map

As published this month in Nature Geoscience, researchers and industry partners have produced the first major 'cat scan of the earth'. Their work reveals a new chart of the sub-continental lithosphere mantle and its potential ...

dateOct 28, 2013 in Earth Sciences
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The Atlantic 'resting' -- for now

Geophysicists have simulated when the continents around the Atlantic develop active continental margins with earthquakes and volcanoes. According to the model, ‘real’ fully active subduction zones will not form ...

dateMay 23, 2011 in Earth Sciences
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