CRITICAL SHEAR STRESS FOR MECHANICAL TWINNING OF JADEITE-AN EXPERIMENTAL STUDY
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dc.contributor.author | Orzol J. | |
dc.contributor.author | Trepmann C.A. | |
dc.contributor.author | Stockhert B. | |
dc.contributor.author | Shi G. | |
dc.date.accessioned | 2022-02-12T02:34:03Z | |
dc.date.available | 2022-02-12T02:34:03Z | |
dc.date.issued | 2003 | |
dc.identifier | https://elibrary.ru/item.asp?id=5059808 | |
dc.identifier.citation | Tectonophysics, 2003, 372, 3-4, 135-145 | |
dc.identifier.issn | 0040-1951 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/35227 | |
dc.description.abstract | Coarse-grained natural jadeitite samples from Myanmar were experimentally deformed in a Griggs-type solid-medium apparatus at strain rates of 2.10-5 and 5.10-6 s-1 and temperatures of 900 and 1000 °C. The microfabrics of the deformed samples are investigated by scanning electron microscopy (SEM) using the electron backscatter diffraction (EBSD) technique. The critical shear stress for twinning in the (100) [001] system is derived from the orientation distribution of jadeite crystals with and without mechanical twins. The results indicate a homogeneous stress field within the sample and a critical shear stress of 150+/-25 MPa, which compares well to that determined by Kolle and Blacic [J. Geophys. Res. 87 (1982) 4019] for mechanical twinning of other clinopyroxenes. With the critical shear stress known, mechanical twinning of jadeite can be used as a paleopiezometer for high stress tectonic environments. | |
dc.subject | DEFORMATION EXPERIMENTS | |
dc.subject | MECHANICAL TWINNING | |
dc.subject | JADEITE | |
dc.subject | PALEOPIEZOMETRY | |
dc.title | CRITICAL SHEAR STRESS FOR MECHANICAL TWINNING OF JADEITE-AN EXPERIMENTAL STUDY | |
dc.type | Статья |
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