Barth, T. F. W. Formerly, Geologic Museum, Oslo, Norway.
Newton, R. C. Department of the Geophysical Sciences, University of Chicago, Chicago, Illinois.
Last reviewed:November 2019
- Structural relations
- Contact-metamorphic rocks
- Regional metamorphic rocks
- Mineral associations of the facies
- Related Primary Literature
- Additional Reading
One of the three major groups of rocks that make up the crust of the Earth. The other two groups are igneous rocks and sedimentary rocks. Metamorphic rocks are preexisting rock masses in which new minerals, or textures, or structures are formed at higher temperatures and greater pressures than those normally present at the Earth's surface. See also: Igneous rocks; Sedimentary rocks
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 46 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information