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Science 9 October 1981:
Vol. 214. no. 4517, pp. 177 - 179
DOI: 10.1126/science.214.4517.177
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Articles

Association Reaction in Forsterite Under Shock Compression

YASUHIKO SYONO 1, TSUNEAKI GOTO 1, HuMIHIKO TAKEI 1, MASAYASU TOKONAMI 2, and KOHJI NOBUGAI 2

1 Research Institute for Iron, Steel and Other Metals, Tohoku University, Sendai 980, Japan
2 Institute of Scientific and-Industrial Research, Osaka University, Suita 565, Japan

Transmission electron microscopic observation of forsterite (Mg2SiO4) shocked to peak pressures of 78 to 92 gigapascals revealed that forsterite breaks down to an assemblage of MgO plus MgSiO3 glass. This strongly supports the interpretation that the high-pressure phase of forsterite under shock compression is due to the assemblage of MgSiO3 perovskite plus MgO.

Submitted on March 23, 1981
Revised on June 16, 1981

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Science. ISSN 0036-8075 (print), 1095-9203 (online)