New data on geochemistry and petrology of Topolninsky complex in Gorny Altai

Anatoliy I. Gusev, Aleksandr F. Korobeynikov, Nikolay I. Gusev, Mariya A. Kukoeva

Research output: Contribution to journalArticle

Abstract

The relevance of the discussed issue is caused by the need of researching petro-geochemistry and petrologic peculiarities of gabbro-granitoid complexes which are related with gold-copper-skarn ore mineralization. The main aim of the research is to study geochemistry of rock types of Topolninsky complex in Gornyn Altai using canonic classification and experimental diagrams on genesis and petrology of magmatites. The methods used in the study. Chemical composition on the major petrogenic elements was determined by silicate assay by X-ray fluorescence (XRF) techniques. Rare elements were determined by inductively coupled plasma on the mass spectrometry «OPTIMA- 4300», for Cu, Zn, Pb, Li - by methods of ISP-AES, the rest elements, including REE wre determined by ISP-MS methods in the VSEGEI Laboratory (St-Petersburg). Absolute age of granitoids was defined by U-Pb method SHRIMP II on zircon in the VSEGEI Laboratory (St-Petersburg). Results. The authors have corrected the absolute age of granitoids formation in Topolninsky complex. For Topolninsky massif by 10 point it is 397,4-4,4 million years, for Karaminsky massif it is 399,3-4,6 million years, corresponding to a border of Lower and Middle Devonian. The paper describes a direct zoning in Karaminsky massif formation. More evolution phases of leucogranites in it are located in the center of massif but early gabbros are on the periphery. The authors estimated different petrochemical coefficients, indices, modules for the rocks of the complex used for decoding the genesis. The ratios of strontium isotopes (87Sr/86Sr for granodiorites of Topolninsky massif is 0,70556, but for Karaminsk leucogranites is 0,70618) identify mantle nature of melts, formed with crust material contamination. The paper indicates the space and paragenetic relation of different types of ore mineralization with granitoids of Topolninsky complex.

Original languageEnglish
Pages (from-to)37-47
Number of pages11
JournalBulletin of the Tomsk Polytechnic University, Geo Assets Engineering
Volume326
Issue number2
Publication statusPublished - 2015

Fingerprint

Petrology
Geochemistry
petrology
Ores
Strontium Isotopes
geochemistry
Rocks
Silicates
Zircon
Zoning
Inductively coupled plasma
Petrochemicals
Gold
Mass spectrometry
Decoding
Copper
Assays
Contamination
Fluorescence
mineralization

Keywords

  • Absolute age
  • Complex
  • Copper
  • Gold
  • Granitoids
  • Mantle-crust interaction
  • Ore mineralization
  • Petrochemistry
  • Strontium isotopes
  • Zoning massif

ASJC Scopus subject areas

  • Economic Geology
  • Geotechnical Engineering and Engineering Geology
  • Fuel Technology
  • Management, Monitoring, Policy and Law
  • Waste Management and Disposal
  • Materials Science (miscellaneous)

Cite this

New data on geochemistry and petrology of Topolninsky complex in Gorny Altai. / Gusev, Anatoliy I.; Korobeynikov, Aleksandr F.; Gusev, Nikolay I.; Kukoeva, Mariya A.

In: Bulletin of the Tomsk Polytechnic University, Geo Assets Engineering, Vol. 326, No. 2, 2015, p. 37-47.

Research output: Contribution to journalArticle

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