Deep sources of regional magnetic anomalies: tectonotypes and relation with transcrustal faults
Dual nature of deep sources of regional magnetic anomalies has been considered. First, tectonotypes of deep sources are rift and subduction-obduction zones of the Earth’s crust, specified by its saturation with products of magmatic activity of basic and average composition under favorable thermodyna...
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| Date: | 2012 |
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| Main Authors: | , |
| Format: | Article |
| Language: | Russian |
| Published: |
S. Subbotin Institute of Geophysics of the NAS of Ukraine
2012
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| Online Access: | https://journals.uran.ua/geofizicheskiy/article/view/116776 |
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| Journal Title: | Geofizicheskiy Zhurnal |
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Geofizicheskiy Zhurnal| Summary: | Dual nature of deep sources of regional magnetic anomalies has been considered. First, tectonotypes of deep sources are rift and subduction-obduction zones of the Earth’s crust, specified by its saturation with products of magmatic activity of basic and average composition under favorable thermodynamic and oxidation-reduction conditions for realization of iron as ferromagnetic minerals. Secondly, these are zones of trans-crustal faults in geodynamic regime of the Earth’s crust extension with wide development in their deep parts of diffusion and fluid processes with re-crystallization of ferruginous minerals into ferromagnetic varieties. |
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