Structural analysis of the fracture surface of a heterogeneous body (quartz sandstone)


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Аннотация

The structure of surface layers of quartz sandstone with a thickness of ~1 μm before and after destruction by a compressive stress is studied by methods of infrared, photoluminescent, and Raman spectroscopy. Before destruction, this layer contained quartz grains cemented with montmorrillonite and kaolinite. The grains are covered with a thin water layer and have crystallographic defects: Si–O, self-trapped excitons, AlOH and LiOH compounds, [AlO4] centers, etc. The destructed surface contains separate quartz grains with sizes of ~2 μm and a reduced defect concentration. It is assumed that the defects reduce the strength of quartz grains, which are destroyed in the first turn.

Авторлар туралы

V. Vettegren’

Ioffe Institute

Хат алмасуға жауапты Автор.
Email: Victor.Vettegren@mail.ioffe.ru
Ресей, St. Petersburg, 194021

R. Mamalimov

Ioffe Institute

Email: Victor.Vettegren@mail.ioffe.ru
Ресей, St. Petersburg, 194021

V. Kulik

Ioffe Institute

Email: Victor.Vettegren@mail.ioffe.ru
Ресей, St. Petersburg, 194021

A. Patonin

Borok Geophysical Observatory, Schmidt Institute of Physics of the Earth

Email: Victor.Vettegren@mail.ioffe.ru
Ресей, Borok, Yaroslavl oblast, 152742

A. Ponomarev

Schmidt Institute of Physics of the Earth

Email: Victor.Vettegren@mail.ioffe.ru
Ресей, Moscow, 123242

G. Sobolev

Schmidt Institute of Physics of the Earth

Email: Victor.Vettegren@mail.ioffe.ru
Ресей, Moscow, 123242

I. Shcherbakov

Ioffe Institute

Email: Victor.Vettegren@mail.ioffe.ru
Ресей, St. Petersburg, 194021

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