•  
  •  
 

Abstract

The article analyses the ore-generating role of the focal structure during the formation of apogranitoid tungsten mineralization at the Yakhton deposit. The Yakhton ore field, within which apogranitoid tungsten mineralization has been identified, is confined to a deep focal structure, expressed by polychronic magmatism with a combination in the area of rocks of granitoid, lamprophyre and alkali-basaltoid complexes, as well as fluid-explosive breccias. The structure is confined to a tectonic node, expressed by the intersection of faults in the northwestern, meridional and northeastern directions. These faults predetermined large shear movements and flexural bending of the overall plicative structure, as a result of which a chamber space for the intrusion was created. In the Yakhton intrusion, dikes formed at the end of the formation of the entire complex. Recognition of the reality of this deep focal structure can explain such fundamental features of magmatism as the area of development, its high intensity, discreteness, the presence of locally manifested fluid-explosive breccias and other petrographic-geochemical features (decipher).

First Page

29

Last Page

36

References

  1. Denisov E.P. Some features of basaltoids with inclusions of ultramafic rocks // Geology and Geophysics. – 1965. - No. 4. – P. 168-176.
  2. Ushakov V. et al. Report on the topic “Largescale forecasting of blind mineralization in the areas of the Yakhton, Karatyube and other tungsten deposits for 1974- 76.” 1976.
  3. Pobedinsky G. et al. Report of the Chakyl-Kalyan party on prospecting and exploration work carried out at the Yakhton tungsten deposit and the adjacent area in 1965-67. 1967.
  4. Raskin V.E., Juraev M.N. Features of localization of skarn-scheelite mineralization in the KaratyubeChakylkalyan mountains //Republican scientific-practical conference. “Current problems of geology, geophysics and metallogeny” – Tashkent, 2017, - pp. 273-276.
  5. Raskin V.E. Information report of the Yakhton State Enterprise on the results of work for 2006-2014. 2014
  6. Otroshchenko V.D. and others. Geological and mineralogical - geochemical criteria for the prospective assessment of tungsten ore occurrences in skarns of certain areas. Sr. Asia. 1977.
  7. Skorobogatov B. Report on the results of gravimetric and magnetic surveys with a scale of 1:50000 over an area of 700 sq. km in the Chakyl-Kalyan Mountains for the purpose of deep geological mapping and identification of structural positions favorable for localizing deposits of tungsten and other minerals beyond 1977-82 Funds of the State Enterprise “Central Uzbekistan GSPE”, 1982.
  8. Juraev M.N. On the geochemical features of apogranitoid tungsten mineralization of the lower stage of the Yakhton deposit // International scientific and practical conference. “Strategy for the development of geological exploration of subsoil: present and future” - Moscow MGRI-RGGRU, 2018, April 4-6, - pp. 162-163.
  9. Zahidov A. Analysis, screening and justification of local areas for gold and gold-rare metal mineralization in the Karatyube-Chakylkalyan mining region. 2000.
  10. Juraev M.N., Dilmonov O.O., Turaev T.N. Towards new types of tungsten mineralization in the Karatyube-Chakylkalyan ore district // International scientific and practical conference. “Strategy for the development of geological exploration of subsoil: present and future” - Moscow MGRI-RGGRU, 2018, April 4-6, - pp. 317-318.
  11. Evolution of igneous rocks / Ed. H. Yodera. - M.: Mir. 1983. – 528 p.
  12. Juraev M.N., Khalmatov U.A., Nazhmiddinov B.U. On the specifics of magmatism in the central part of the Chakylkalyan megablock and its influence on the formation of apogranitoid tungsten mineralization // 14th International Scientific and Practical Conference. “New Ideas in Geosciences”. – Moscow, MGRI-RGGRU, 2019, April 2-5, - pp. 261-264.
  13. Juraev M.N., Mukhammadiev B.U. Forming conditions of apometaterrigenous and apogranitoid tungsten mineralization in the Karatepa-Chaqil-Kalon mining region // Republican Scientific and Practical Conference. A collection of scientific articles. “The role of innovative ideas and technologies in the research of young scientists”. NUUz. - Tashkent, 2018, - S. 159-162.
  14. Joraev M.N., Mukhammadiev B.U., Khamidova M.Kh. Formation conditions of a new type of tungsten mineralization in the Karatepa-Chaqil-Kalon mining region // “Innovation-2018” International Scientific Conference. Collection of scientific articles. - Tashkent, 2018, - S. 136-138.
  15. Golovko A.V., Gadetsky A.Yu. On the age and formational position of the South Tien Shan complex of alkaline gabbroids and basaltoids // Uzb. Geol. magazine 1991. - No. 2. – P. 37-40.
  16. Deep xenoliths and the structure of the lithosphere. Project “Xenolith” / Edited by V.A. Zharkov, A.F. Grachev. – M.: Science. 1987.-239 p.

Download

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.