STRUCTURAL-COMPOSITIONAL MODEL OF THE NYURBINSKAYA KIMBERLITE PIPE FORMATION (SREDNE-MARKHA AREA OF THE YAKUTIAN DIAMONDIFEROUS PROVINCE)
https://doi.org/10.5800/GT-2016-7-3-0216
Abstract
The paper presents the results of comprehensive study of the primary diamond deposit of the Nyurbinskaya pipe in the Yakutian diamondiferous province. It is established, that the pipe is confined to the fault junction of four directions and is composed of the kimberlite of four phases. Analysis of different faults and tectonic fracturing allowed to reconstruct the tectonic stress fields acting at the stage of the kimberlite body formation and to determine their occurrence sequence in time. The data obtained about regularities of the Nyurbinskaya pipe compositional structure and results of geologo-structural studies are combined in a single structural-compositional model of the deposit formation. Peculiarities of the fault network operation during the deposit formation stage are confirmed by experimental results using polarization-optical method. The model allowed to formulate the basic structural characteristics of the prospecting works object within which the formation of kimberlite body type of the Nyurbinskaya pipe is possible and to determine the elements of the fault network which are promising for the kimberlite pipes discovery.
About the Authors
A. S. Gladkov
Institute of the Earth’s Crust, Siberian Branch of RAS
Russian Federation
Russian Federation
Candidate of Geology and Mineralogy,
128 Lermontov street, Irkutsk 664033
D. A. Koshkarev
Institute of the Earth’s Crust, Siberian Branch of RAS
Russian Federation
Russian Federation
Candidate of Geology and Mineralogy,
128 Lermontov street, Irkutsk 664033
A. V. Cheremnykh
Institute of the Earth’s Crust, Siberian Branch of RAS
Russian Federation
Russian Federation
Candidate of Geology and Mineralogy, Senior Researcher,
128 Lermontov street, Irkutsk 664033
F. João
Sociedade Mineira de Catoca (Catoca Ltd.)
Angola
Angola
Head of the Mineralogical Laboratory,
Luanda Sector Talatona, Luanda Sul
M. A. Karpenko
ALROSA,
“Catoca” Ltd. SC «ALROSA» (PC)
Russian Federation
Russian Federation
Chief Geologist of Nyurba Mining and Processing Division;
Head of operational Department of Geology,
20B Leningradsky prospect, Mirny 678170, Republic of Sakha (Yakutia)
M. V. Marchuk
Institute of the Earth’s Crust, Siberian Branch of RAS
Russian Federation
Russian Federation
Candidate of Geology and Mineralogy, Junior Researcher,
128 Lermontov street, Irkutsk 664033
I. A. Potekhina
Institute of the Earth’s Crust, Siberian Branch of RAS
Russian Federation
Russian Federation
Candidate of Geology and Mineralogy, Junior Researcher,
128 Lermontov street, Irkutsk 664033
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For citations:
Gladkov A.S., Koshkarev D.A., Cheremnykh A.V., João F., Karpenko M.A., Marchuk M.V., Potekhina I.A. STRUCTURAL-COMPOSITIONAL MODEL OF THE NYURBINSKAYA KIMBERLITE PIPE FORMATION (SREDNE-MARKHA AREA OF THE YAKUTIAN DIAMONDIFEROUS PROVINCE). Geodynamics & Tectonophysics. 2016;7(3):435-458. https://doi.org/10.5800/GT-2016-7-3-0216
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