Artificial peridotite takes its gold coat off

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Thomas P. Ferrand
Earthquake Research Institute, Tokyo, Japan

Photograph taken through a binocular during a critical step: extraction of artificial peridotite from its gold capsule.
The sample is a little cylinder, 3 mm long with a diameter of 2.1 mm, sintered from micrometric powders of San Carlos olivine and Corsica antigorite.
Such samples have been used to reproduce earthquakes in the laboratory using a D-DIA apparatus. Thanks to them, a new model has come to explain intermediate-depth earthquakes: the DDST, "Dehydration-Driven Stress Transfer".

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Credit: Thomas P. Ferrand (distributed via imaggeo.egu.eu)

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Type Image Format JPG Size 3.0 MB Aspect 4:3 Width 3648 px Height 2736 px Brand Panasonic Model DMC-FS62 Exposure 6 mm f/2.8 1/30 s ISO 160 Coordinates 51.4459, 7.2612 Tint Black Submitted 14 February 2018 Taken 6 February 2015

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