Microcrystals of coesite and stishovite were discovered as inclusions in amorphous silica grains in shocked melt pockets of a lunar meteorite Asuka-881757 by micro-Raman spectrometry, scanning ...

A simulated visual representation of the structural transition from coesite to post-stishovite. The silicon atoms (blue spheres) surrounded by four oxygen atoms (red spheres) are shown as blue ...

Eclogite xenoliths from kimberlite have long been considered as products of crystallization of basaltic magmas within the upper mantle, and the Ca/(Ca + Mg) and Fe/(Fe + Mg) values of garnets in some ...

One of the main achievements in the Earth science is the development of plate tectonics theory in the 20 th century. It successfully explains the generation and extinction of oceanic plate from ...

We are at a critical time and supporting climate journalism is more important than ever. Science News and our parent organization, the Society for Science, need your help to strengthen environmental ...

Frontiers of ultrahigh-pressure metamorphism: view from field and laboratory / Larissa F. Dobrzhinetskaya and Shah Wali Faryad -- Part I. Diamonds--new studies -- Diamond--lonsdaleite--graphite ...

To a potential fiancée, flaws in a diamond can warn of a boyfriend with poor judgment—or a thin wallet. To geophysicists, however, some of these flaws may provide priceless clues that are critical to ...

Materials science researchers have reported the discovery of materials that totally defy the laws of chemistry. In 1954, Linus Pauling was awarded the Nobel Prize in Chemistry for setting a scientific ...

In early April, when recounting a research project he had started 36 years ago to reconstruct the movements of large blocks in parts of Brazil’s Northeast and Midwest around 600 million years ago, ...

The article details five notable impact craters on Earth: Meteor Crater (Arizona, USA), Chicxulub (Yucatán, Mexico), Vredefort (South Africa), Tnorala (Gosses Bluff, Australia), and Nördlinger Ries ...