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 ...

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 ...

Figure 1: Oxygen isotope compositions of diamond inclusion minerals and of various basaltic rocks. One type of sample that can help to clarify the oxygen isotope history of mantle eclogites is the ...

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 ...

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. In 1902, Daniel Barringer, a lawyer-turned-geologist and ...

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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, ...

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 ...