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Evalution of the Early Precambrian Crust

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Evalution of the Early Precambrian Crust as the Basis for Predicting Mineralization

Tech Area / Field

  • OBS-GEO/Geology/Other Basic Sciences

Status
3 Approved without Funding

Registration date
06.04.1997

Leading Institute
VSEGEI (Geological Research Institute), Russia, St Petersburg

Collaborators

  • Geological Survey of Finland, Finland, Espoo

Project summary

To trace evolution of the Early Precambriancrust – structures, magmatism, sedimentation, metamorphism, subsurface structure, proceeding from the new (author's) theory of ''unity and struggle" of oceanization and continentalization stages in the process of the Earth's crust formation (Oceanization - predominant development of mafic magmatism and isochemical metamorphism (Continentalization - predominant development of salic magmatism and allochemical metamorphism).
- Determine the character and place of mineralization, including uranium mineralization, associated with different evolution stages of the Early Precambrian crust.
- Determine the position of mineralization in subsurface structure of the Earth's rust.

The work will be conducted on the basis of analysis and generalization of the results of extensive studies on the Early Precambrian crust of the Baltic, Ukrainian, Yenisei, Aldan shields, basements of the Russian and Siberian platforms, superdeep wells, obtained by the authors in the course of longterm personal research, as well as the analysis and generalization of published evidence. During many years, work was conducted at VSEGEI in close contact with Academician N.P. Laverov. A group of authors published the following books:


- Kolskaya superdeep (1984). English version is in Germany.
- Magnetic and metamorphic complexes of rocks of Kolskaya superdeep well (1986).
- Superdeep wells of Russia and definite regions (1995)

Potential role of foreign participants

Since significant ore reserves are confined to the Early Precambrian Earth's crust, determination of the pattern of emplacement, evolution and distribution of mineralization provokes great interest of different foreign geological Surveys-Canada, USA; Finland, Sweden, Australia, Germany, China, and of the scientists from these countries, who participated actively in the discussion of Precambrian problems at international congresses, conferences and in publications.

Results expected

As a result of the work, issues of evolution of the Early Precambrian Earth's crust as the basis for mineralization prediction, mineralization in evolution will be considered in scientific articles, papers and monograph.


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