Pb, Sr and Nd Isotope Ratios of Permian-Triassic Flood Basalts in the Basement of the West Siberian Plate
Abstract
Permian-Triassic flood basalts are widespread across an extremely large area of the Siberian plate in the pre-Jurassic basement of the West Siberian plate. We show that Permian-Triassic flood basalts are similar to the trap basalts of the Siberian Platform with regard to geochemical features and Pb, Sr and Nd isotopic composition. Strontium and neodymium isotope ratios indicate the contribution to the formation of the flood basalts of the EM1 reservoir. We will also show a possible contamination of basalt magma by the Palaeozoic island-arc and orogenic rock complexes.
References
[1] Al’mukhamedov A I, Medvedev A Ya and Zolotukhin V V 2004 Petrology 12 297-311
[2] Dobretsov N L, Borisenko A S, Izokh A E and Zhmodik S M 2010 Russian Geol. and Geophys. 51 903-924
[3] Ivanov K S, Erokhin Yu V, Ponomarev V S, Pogromskaya O E and Berzin S V 2016 Int. J. of Environmental and Sci. Edu. 11 6409-6432
[4] Ivanov K S, Puchkov V N, Fyodorov Yu N, Erokhin Yu V and Pogromskaya O E 2013 J. of Asian Earth Sci. 72 12-24
[5] Ivanov K, Fyodorov Yu, Pogromskaya O and Erokhin Yu 2011 Proceedings. The Fifth Workshop on 1:5M Int. Geo. Map of Asia (Beijing, Elsiver) p 53-62
[6] Kamber B S and Gladu A H 2009 Geostandards and Geoanalytical Res. 33 169-181
[7] Medvedev A Ya, Al’mukhamedov A I and Kirda N P 2003 Geologiya I Geophisica,. Vol. 44. № 1-2. P. 86-100
[8] Pin C and Zalduegui J E S 1997 Anal. Chim. Acta 339 79-89
[9] Reichow M K, Pringle M S, Al’Mukhamedov A I, Allen M B, Andreichev V L, Buslov M M, Davies C E, Fedoseev G S, Fitton J G, Inger S, Medvedev A Ya, Mitchell C, Puchkov V N, Safonova I Yu, Scott R A and Saunders A D 2009 Earth and Planet. Sci. Let. 277 9-20
[10] Reichow M K, Saundersa A D, Whitea R V, Al’Mukhamedov A I and Medvedev A Ya 2005 Lithos 79 425-452
[11] Saraev S V, Baturina T P, Ponomarchuk V A and Travin A V 2009 Russian Geology and Geophysics 50 1-14
[12] Sharma M, Basu A R and Nesterenko G V 1992 Earth and Planet. Sci. Let. 113 365-381
[13] Wooden J L, Czamanske G K, Fedorenko V A, Arndt N T, Chauvel C, Bouse R M, King B W, Knight R J and Siem D F 1993 Geochim. et cosmochim. acta 57 3677-3704
[14] Woodhead J J. 2002 Anal. At. Spectrom. 17 1381–138
[15] Zartman R E and Haines S M 1988 Geochim. et cosmochim. acta 52 1327-1339