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 ...

Figure 1: X-ray diffraction patterns showing the transition of single-crystal coesite under high pressures. Figure 3: Illustration of structural transition from coesite to monoclinic post-stishovite ...

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 ...

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 ...

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 ...

In 1902, Daniel Barringer, a lawyer-turned-geologist and successful businessman, heard about a large crater located forty miles east of Flagstaff, in the desert of Arizona. Around this strange crater ...

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 ...