Articles | Volume 12, issue 4
Solid Earth, 12, 959–969, 2021
https://doi.org/10.5194/se-12-959-2021
Solid Earth, 12, 959–969, 2021
https://doi.org/10.5194/se-12-959-2021

Research article 23 Apr 2021

Research article | 23 Apr 2021

Nanoscale earthquake records preserved in plagioclase microfractures from the lower continental crust

Arianne J. Petley-Ragan et al.

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Latest update: 25 Oct 2021
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Short summary
Earthquakes cause rapid deformation that has long-term effects on the Earth's crust. We studied the most abundant mineral, feldspar, in the vicinity of an earthquake to unravel its deformation history. With microscopy, we found internal nm-scale structures that indicate a history of high stress and destruction of atomic structure. This was quickly followed by high temperature and fluid introduction within seconds. Our findings illustrate the intense conditions imposed on rocks by earthquakes.