Most volcanoes form at the boundaries of Earth's tectonic plates, which are huge slabs of crust and upper mantle that fit together like puzzle pieces. Think of these plates as massive rafts floating ...

The journey for volcanic rocks found on many volcanic islands began deep within the Earth. Brought to the Earth’s surface in eruptions of deep volcanic material, these rocks hold clues as to what is ...

Add Yahoo as a preferred source to see more of our stories on Google. Magma becomes lava when it rises up to the Earth’s surface, like when the Nyiragongo volcano erupted in the Democratic Republic ...

The flowing of molten rocks through small cracks in the heart of volcanoes may have been a perfect environment to forge the building blocks of life on Earth. These chemicals—called biopolymers—are an ...

Two test methods put the rocks at 4.16 billion years old The volcanic rocks date to primordial Earth's Hadean eon Rocks are surviving fragments of Earth's oldest crust June 26 (Reuters) - Along the ...