Abstract
AbstractTransmission electron microscopy has been used to examine single crystals of natural quartz which have been plastically deformed in compression at high temperature (500 to 700°C) and confining pressure (15 to 20 kbar) with high shear stress on (0001). In specimens deformed at 500°C, the only features found are closely spaced pairs of planar defects parallel to {0001}. Study of the diffraction contrast fringes reveals that each pair of defects bounds a Brazil twin band which has been produced by the high shear stress. At the higher temperature there are dislocations in the twin bands and other regions of the crystals with dislocations only. The dislocations are almost invariably either pure screw (b = a 〈1120〉) or of a particular mixed character (predominantly edge, but with a 30° screw component). Arrays of the mixed dislocations are observed which would produce stress fields consistent with the stress‐optical effects observed by optical microscopy.
References
20
Referenced
104
{'key': 'e_1_2_1_2_2', 'first-page': '109', 'volume-title': "Dana's System of Mineralogy", 'author': 'Frondel C.', 'year': '1962'}
/ Dana's System of Mineralogy by Frondel C. (1962)10.2475/ajs.262.1.26
10.1086/627030
10.1086/627029
- J. K.MacKenzie Ph.D. Thesis Bristol University 1949and
- private communication (1966).
10.1071/PH650135
{'key': 'e_1_2_1_8_2', 'first-page': '19', 'volume': '19', 'author': 'McLaren A. C.', 'year': '1966', 'journal-title': 'Austral. J. Phys.'}
/ Austral. J. Phys. by McLaren A. C. (1966)10.1002/pssb.19660130213
10.1063/1.1702957
10.1098/rspa.1962.0164
10.1002/pssb.19650110221
10.1002/pssb.19640070215
10.1002/pssb.19640070304
10.1063/1.1753911
{'key': 'e_1_2_1_16_2', 'volume-title': 'Crystal Structures of Minerals', 'author': 'Bragg W. L.', 'year': '1965'}
/ Crystal Structures of Minerals by Bragg W. L. (1965)10.1107/S0365110X65003316
{'key': 'e_1_2_1_18_2', 'volume-title': 'Electron Microscopy of Thin Crystals', 'author': 'Hirsch P. B.', 'year': '1965'}
/ Electron Microscopy of Thin Crystals by Hirsch P. B. (1965)10.1126/science.147.3655.292
- B. E.Hobbs unpublished work
Dates
Type | When |
---|---|
Created | 18 years, 1 month ago (July 9, 2007, 5:16 p.m.) |
Deposited | 1 year, 10 months ago (Oct. 17, 2023, 6:52 a.m.) |
Indexed | 2 months, 4 weeks ago (May 24, 2025, 12:08 a.m.) |
Issued | 58 years, 7 months ago (Jan. 1, 1967) |
Published | 58 years, 7 months ago (Jan. 1, 1967) |
Published Online | 19 years, 4 months ago (March 30, 2006) |
Published Print | 58 years, 7 months ago (Jan. 1, 1967) |
@article{McLaren_1967, title={Transmission Electron Microscope Study of Brazil Twins and Dislacations Experimentally Produced in Natural Quartz}, volume={19}, ISSN={1521-3951}, url={http://dx.doi.org/10.1002/pssb.19670190216}, DOI={10.1002/pssb.19670190216}, number={2}, journal={physica status solidi (b)}, publisher={Wiley}, author={McLaren, A. C. and Retchford, J. A. and Griggs, D. T. and Christie, J. M.}, year={1967}, month=jan, pages={631–644} }