Genesis of early Precambrian complexes and of theirs metallogeny according to data of hot heterogeneous accretion of the Earth
https://doi.org/10.31242/2618-9712-2019-24-1-43-51
Abstract
It was shown that modern evidence of global magma ocean fractionation during Earth accretion allow to explain discussion problems of Early Precambrian. Due to a relatively low pressure during fractionation early magma ocean its mainly residual melts have acid composition. This provided acid composition mainly Early Precambrian rocks. Origin from melts explain high temperature crystallization these rocks. Dipping of cold rocks and sediments caused origin of heterogeneous complexes. Raising of deep migmas caused presence of high-baric rocks and very ancient age of basic crystalline schists. Emanation and magmatic differentiation of magma ocean caused origin of unique deposits.
Supporting agencies: This article was prepared according to the plan of the research and development work of IGABM SB RAS, project No. 0381-2019-0003.
About the Author
V. S. Shkodzinskiy
Diamond and Precious Metal Geology Institute SB RAS
Russian Federation
Russian Federation
SHKODZINSKIY Vladimir Stepanovich, Doctor of Geological and Mineralogical Sciences, Leading Researcher, Diamond and Precious Metal Geology Institute SB RAS, 39, pr. Lenina, Yakutsk, 677980, Russia, https://orcid.org/0000-0001-7749-1264, shkodzinskiy@diamond.ysn.ru.
References
1. Green D.X. Sostav basaltovyh magm kak kriterij ih vosniknovenia pri vulkanisme / Red. E. Bullard, D. Kann, D. Metjus // Petrologia isvergennyh i metemorficheskih porod dna okeana. M.: Mir, 1973. S. 242–261.
2. Green D.X., Ringwood A.E. Proisxojdenie magmaticheskix porod izvectkovo-shelochnogo ryada // Petrologiya verxney mantii. M.: Mir, 1968. S. 118 – 131.
3. Skodsinskiy V.S. Globalnaja petrologia po sovremennym dannym o gorachej akkrecii Semli. Yakutsk: Isd. SVFU, 2018. 244 s.
4. Arndt N.T. The separation of magmas from partially molten peridotite // Carnegie Inst. Wash. Yearb. 1977. V. 76. P. 424–428.
5. Sablukova L.I., Sablukov S.M., Stegnitsky Yu.B., Banzeruk V.I. Mantle xenoliths of the Nyurbinskaya pipe (Yakutia) relict of weakly metasomatized lithospheric mantle // 9th International Kimberlite Conference. Extended Abstract. N 91KC-A-00163. 2008.
6. Zinchenko V.N., Nikitina L., Korolev N., Felix T. Eclogites from the upper mantle beneatch the Kassai Craton (Western Africa): Petrography, wholerock geochemistry and U-Pb zircon age // Precambrian Research. 2014. V. 249. P. 13–22. https://doi. org/10.1016/j.precamres.2014.04.014.
7. Zinchenko V.N. Kimberlite severo-vostoka Angoly. Geologicheskoe stroenie, almasonosnost, almasy. Saarbruken (Germania). Palmarium Academic Publishing, 2014. 240 s.
8. Bereskin V.I., Smelov A.P., Zedgenizov A.N. Geolocheskoe stroenie zentralnoj chasti Aldano-Stanovogo Shita i himicheskie sostavy porod rannego dokembrija (Ugnaja Yakutia). Novosibirsk: Isd. SO RAN, 2015. 459 s.
9. Smidt O.Ju. Proishogdenie Zemli i planet. M.: Isd. AN SSSR, 1962. 132 s.
10. Ringwood A.E. Proishogdenie Zemli i Luny. M.: Nedra, 1982. 294 s.
11. Dodd R.T. Meteority – petrologiya i geochimiya. M.: Mir, 1986. 382 s.
12. Ruzmaikina T.V. Protoplanetnyi disk: ot idei sahvata k teorii proishogdenia // Fisika Semli. 1991. N 8. S. 5 – 14.
13. Harris P.G, Tozer D.C. Fractionation of iron in the Solar system // Nature. 1967. V. 215. P. 1449–1451. https://doi.org/10.1038/216781a0.
14. Salop L.N. Geologicheskoe rasvitie Semli v dokembrii. L.: Nedra, 1982. 334 s.
15. Smelov A.P., Bereskin V.I., Timofeev V.F. Geologicheskoe stroenie zapadnoj chasti Aldano-Stanovogo Shita i himicheskie sostavy porod rannego dokembriaja (Ugnaja Yakutia). Yakutsk: Isd. JaNZ SO RAN, 2009. 168 s.
16. Minz M.V., Kaulina T.V., Konilov A.N. Termalnaja i geodinamicheskaja evoluzia Laplandskogo granulitovogo pojasa // Granulitovye kompleksy v geologicheskom rasvitii dokembrija i fanerozoja: Materialy II Rossijskoj konferenzii. SPb., 2007. S. 213 – 216.
17. Skodzinskiy V.S. Fazovaya evoluzija magm i petrogenesis. M.: Nauka, 1985. 232 s.
18. Granulitovye komplexy v geologicheskom rasvitii dokembria i fanerozoya: Materialy II Rossijskoj konferenzii po problemam geologii i geodinamike dokembriya. SPb., 2007. 407 s.
19. Dobrezov N.L. Osnovy tektoniki i geodinamiki. Novosibirsk: Isd. NGU, 2011. 492 s.
Review
For citations:
Shkodzinskiy V.S. Genesis of early Precambrian complexes and of theirs metallogeny according to data of hot heterogeneous accretion of the Earth. Arctic and Subarctic Natural Resources. 2019;24(1):43-51. (In Russ.) https://doi.org/10.31242/2618-9712-2019-24-1-43-51
Views:
17
Email this article 