Reference Terms
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Metamorphic rock
Metamorphic rock is the result of the transformation of a pre-existing rock type, the protolith, in a process called metamorphism, which means "change in form".
Note: The above text is excerpted from the Wikipedia article "Metamorphic rock", which has been released under the GNU Free Documentation License.
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April 29, 2025
Apr. 29, 2025 — Daily exposure to certain chemicals used to make plastic household items could be linked to more than 356,000 global deaths from heart disease in 2018 alone, a new analysis of population surveys shows. While the chemicals, called phthalates, are in ...
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Apr. 23, 2025 — Scientists believe that the motion of Earth's continents through plate tectonics has been largely steady over millions of years. New research, however, suggests this drift can speed up or slow down ...
Latest Headlines
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Apr. 28, 2025 — Even under today's climatic conditions, the long-extinct straight-tusked elephant could still live in Europe. This is the conclusion of a recent study. For this finding, the research group combined ...
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