"Clifford's Rule" and the geodynamics of kimberlite magmatism
The Clifford rule emphasizes the association of kimberlite magmatism with the crust areas of Archean and Early Proterozoic age. Though there are diamantiferous and highly productive primary diamond deposits outside Archean cratons, the Clifford rule is valid for most cases. However, from the geodyna...
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| Дата: | 2013 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | rus |
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Subbotin Institute of Geophysics of the NAS of Ukraine
2013
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| Онлайн доступ: | https://journals.uran.ua/geofizicheskiy/article/view/116453 |
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| Назва журналу: | Geofizicheskiy Zhurnal |
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journalsuranua-geofizicheskiy-article-1164532020-10-07T11:59:34Z "Clifford's Rule" and the geodynamics of kimberlite magmatism Aryasova, O. V. Khazan, Ya. M. The Clifford rule emphasizes the association of kimberlite magmatism with the crust areas of Archean and Early Proterozoic age. Though there are diamantiferous and highly productive primary diamond deposits outside Archean cratons, the Clifford rule is valid for most cases. However, from the geodynamics viewpoint the rule is not consistent because the kimberlites have a deep origin, and crustal structures can not affect the formation of protokimberlite melts. The extended Clifford rule associates the primary diamonds deposits not with the Archean crust but with the thick depleted lithosphere. It is geodynamically justified and has almost no exceptions. Besides, with such an interpretation of the Clifford rule the association of the kimberlite magmatizm with the ancient structures becomes self-evident because a lithosphere characteristic of Archean cratons could not be formed later due to a decrease of the potential temperature of the convecting mantle since Archean. Therefore the cooling of the convecting mantle is in fact the primary physical reason underlying the validity of the Clifford rule. Subbotin Institute of Geophysics of the NAS of Ukraine 2013-12-01 Article Article application/pdf https://journals.uran.ua/geofizicheskiy/article/view/116453 10.24028/gzh.0203-3100.v35i6.2013.116453 Geofizicheskiy Zhurnal; Vol. 35 No. 6 (2013); 101-113 Геофизический журнал; Том 35 № 6 (2013); 101-113 Геофізичний журнал; Том 35 № 6 (2013); 101-113 2524-1052 0203-3100 rus https://journals.uran.ua/geofizicheskiy/article/view/116453/110556 Copyright (c) 2020 Geofizicheskiy Zhurnal https://creativecommons.org/licenses/by/4.0 |
| institution |
Geofizicheskiy Zhurnal |
| collection |
OJS |
| language |
rus |
| format |
Article |
| author |
Aryasova, O. V. Khazan, Ya. M. |
| spellingShingle |
Aryasova, O. V. Khazan, Ya. M. "Clifford's Rule" and the geodynamics of kimberlite magmatism |
| author_facet |
Aryasova, O. V. Khazan, Ya. M. |
| author_sort |
Aryasova, O. V. |
| title |
"Clifford's Rule" and the geodynamics of kimberlite magmatism |
| title_short |
"Clifford's Rule" and the geodynamics of kimberlite magmatism |
| title_full |
"Clifford's Rule" and the geodynamics of kimberlite magmatism |
| title_fullStr |
"Clifford's Rule" and the geodynamics of kimberlite magmatism |
| title_full_unstemmed |
"Clifford's Rule" and the geodynamics of kimberlite magmatism |
| title_sort |
"clifford's rule" and the geodynamics of kimberlite magmatism |
| description |
The Clifford rule emphasizes the association of kimberlite magmatism with the crust areas of Archean and Early Proterozoic age. Though there are diamantiferous and highly productive primary diamond deposits outside Archean cratons, the Clifford rule is valid for most cases. However, from the geodynamics viewpoint the rule is not consistent because the kimberlites have a deep origin, and crustal structures can not affect the formation of protokimberlite melts. The extended Clifford rule associates the primary diamonds deposits not with the Archean crust but with the thick depleted lithosphere. It is geodynamically justified and has almost no exceptions. Besides, with such an interpretation of the Clifford rule the association of the kimberlite magmatizm with the ancient structures becomes self-evident because a lithosphere characteristic of Archean cratons could not be formed later due to a decrease of the potential temperature of the convecting mantle since Archean. Therefore the cooling of the convecting mantle is in fact the primary physical reason underlying the validity of the Clifford rule. |
| publisher |
Subbotin Institute of Geophysics of the NAS of Ukraine |
| publishDate |
2013 |
| url |
https://journals.uran.ua/geofizicheskiy/article/view/116453 |
| work_keys_str_mv |
AT aryasovaov cliffordsruleandthegeodynamicsofkimberlitemagmatism AT khazanyam cliffordsruleandthegeodynamicsofkimberlitemagmatism |
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2024-04-21T19:40:53Z |
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2024-04-21T19:40:53Z |
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