An Experimental Study of Temperature-Gradient Metamorphism
Abstract The present study was carried out with a view to quantifying the effects of the main parameters ot temperature-gradient metamorphism. Cold-room simulation tests showed crystal growth to be an increasing function of the temperature-gradient modulus with a lower limit of around 0.25 deg/cm. T...
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Cambridge University Press (CUP)
1980
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Online Access: | http://dx.doi.org/10.1017/s0022143000010844 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000010844 |
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crcambridgeupr:10.1017/s0022143000010844 2024-09-15T18:15:38+00:00 An Experimental Study of Temperature-Gradient Metamorphism Marbouty, D. 1980 http://dx.doi.org/10.1017/s0022143000010844 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000010844 en eng Cambridge University Press (CUP) Journal of Glaciology volume 26, issue 94, page 303-312 ISSN 0022-1430 1727-5652 journal-article 1980 crcambridgeupr https://doi.org/10.1017/s0022143000010844 2024-08-28T04:02:57Z Abstract The present study was carried out with a view to quantifying the effects of the main parameters ot temperature-gradient metamorphism. Cold-room simulation tests showed crystal growth to be an increasing function of the temperature-gradient modulus with a lower limit of around 0.25 deg/cm. This growth also proved to be a function of temperature itself reaching a maximum at around –5°C Furthermore the shape of depth-hoar crystals was also shown to depend on temperature and to resemble approximately that obtained when crystals are formed in the atmosphere. Temperature-gradient metamorphism is observed to take place at constant density. Increase in crystal size is a decreasing function of density with a lower limit of around 150 kg/m 3 , below which destructive metamorphism occurs accompanied by packing (similar to ET metamorphism): the upper limit is situated at approximately 350 kg/m 3 and no depth-hoar crystals occur above this value. The series of Cold-room simulations enabled a highly simplified model of crystal growth to be constructed. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 26 94 303 312 |
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Cambridge University Press |
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English |
description |
Abstract The present study was carried out with a view to quantifying the effects of the main parameters ot temperature-gradient metamorphism. Cold-room simulation tests showed crystal growth to be an increasing function of the temperature-gradient modulus with a lower limit of around 0.25 deg/cm. This growth also proved to be a function of temperature itself reaching a maximum at around –5°C Furthermore the shape of depth-hoar crystals was also shown to depend on temperature and to resemble approximately that obtained when crystals are formed in the atmosphere. Temperature-gradient metamorphism is observed to take place at constant density. Increase in crystal size is a decreasing function of density with a lower limit of around 150 kg/m 3 , below which destructive metamorphism occurs accompanied by packing (similar to ET metamorphism): the upper limit is situated at approximately 350 kg/m 3 and no depth-hoar crystals occur above this value. The series of Cold-room simulations enabled a highly simplified model of crystal growth to be constructed. |
format |
Article in Journal/Newspaper |
author |
Marbouty, D. |
spellingShingle |
Marbouty, D. An Experimental Study of Temperature-Gradient Metamorphism |
author_facet |
Marbouty, D. |
author_sort |
Marbouty, D. |
title |
An Experimental Study of Temperature-Gradient Metamorphism |
title_short |
An Experimental Study of Temperature-Gradient Metamorphism |
title_full |
An Experimental Study of Temperature-Gradient Metamorphism |
title_fullStr |
An Experimental Study of Temperature-Gradient Metamorphism |
title_full_unstemmed |
An Experimental Study of Temperature-Gradient Metamorphism |
title_sort |
experimental study of temperature-gradient metamorphism |
publisher |
Cambridge University Press (CUP) |
publishDate |
1980 |
url |
http://dx.doi.org/10.1017/s0022143000010844 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000010844 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 26, issue 94, page 303-312 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000010844 |
container_title |
Journal of Glaciology |
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26 |
container_issue |
94 |
container_start_page |
303 |
op_container_end_page |
312 |
_version_ |
1810453526644523008 |