Low-Ti melts from the southeastern Siberian traps large igneous province: Evidence for a water-rich mantle source?

Journal of Earth System Science

Volumn 117, Issue 1, 2008, Pages 1-21

  Ivanov, Alexei V ^a   Demonterova, Elena I ^a   Rasskazov, Sergei V ^a   Yasnygina, Tatyana A ^a  

^a INSTITUTE OF THE EARTH S CRUST   (Russian Federation)

Author keywords

Basalts; Geochemistry; Geodynamics; Large igneous provinces; Mineralogy and Petrology; Trace elements

Indexed keywords

BASALT; DIABASE; GEOCHEMISTRY; GEODYNAMICS; ISLAND ARC; ISOTOPIC RATIO; LARGE IGNEOUS PROVINCE; MANTLE SOURCE; MELT; MINERALOGY; OLIVINE; PETROLOGY; PLAGIOCLASE; SILL; STRONTIUM ISOTOPE; SUBDUCTION; TITANIUM; TRACE ELEMENT; TRAP (GEOLOGICAL STRUCTURE);

EURASIA; KRASNOYARSK [RUSSIAN FEDERATION]; NORIL'SK; RUSSIAN FEDERATION;

EID: 40349098234     PISSN: 02534126     EISSN: 02534126     Source Type: Journal    
DOI: 10.1007/s12040-008-0008-z     Document Type: Article

References (114)

1. Al'mukhamedov A I, Medvedev A Ya and Zolotukhin V V 2004 Chemical Evolution of the Permian-Triassic Basalts of the Siberian Platform in Space and Time; Petrology 12 297-311.
2. Arndt N, Lehnert K and Vasil'ev Y 1995 Meimechites: highly magnesian lithosphere-contaminated alkaline magmas from deep subcontinental mantle; Lithos 34 41-59.
3. Barry T L, Ivanov A V, Rasskazov S V, Demonterova E I, Dunai T J, Davies G R and Harrison D 2007 Helium isotopes provide no evidence for deep mantle involvement in widespread Cenozoic volcanism across Central Asia; Lithos 95 415-424.
4. 3He plume origin and temporal-spatial evolution of the Siberian flood basalts; Science 269 822-825.
5. Basu A R, Hannigan R E and Jacobsen S B 1998 Melting of the Siberian mantle plume; Geophys. Res. Lett. 25 2209-2212.
6. Bercovici D and Karato S-I 2003 Whole-mantle convection and the transition-zone water filter; Nature 425 39-44.
7. Bézos A, Lorand J-P, Humler E and Gros M 2005 Platinum-group element systematics in mid-oceanic ridge basaltic glasses from the Pacific, Atlantic, and Indian oceans; Geochim. Cosmochim. Acta. 69 2613-2627.
8. Bina C and Helffrich G 1994 Phase transition Clapyron slopes and transition zone seismic discontinuity topography; J. Geophys. Res. 99 15,853-15,860.
9. Bina C R, Stein S, Marton F C and Van Ark E M 2001 Implications for slab mineralogy for subduction dynamics; Phys. Earth Planet. Int. 127 51-66.
10. Blundy J D and Wood B J 1991 Crystal-chemical controls on the partitioning of Sr and Ba between plagioclase feldspar, silicate melt, and hydrothermal solutions; Geochim. Cosmochim. Acta. 55 193-209.
11. Burov E and Guillou-Frottier L 2005 The plume head-continental lithosphere interaction using a tectonically realistic formulation for the lithosphere; Geophys. J. Int. 161 469-490.
12. Campbell I H, Czamanske G K, Fedorenko V A, Hill R I, Stepanov V and Kunilov V E 1992 Synchronism of the Siberian traps and the Permian-Triassic boundary; Science 258 1760-1763.
13. Cox K G 1978 Flood basalts, subduction and the break-up of Gondvanaland; Nature 274 47-49.
14. Czamanske G K, Gurevich A B, Fedorenko V and Simonov O 1998 Demise of the Siberian plume: paleogeographic and paleotectonic reconstruction from the prevolcanic and volcanic records, North-Central Siberia; Int. Geol. Rev. 40 95-115.
15. Demonterova E I and Maslovskaya M N 2003 Chromatographic extraction of Sr from samples with high Rb/Sr ratios for mass-spectrometric analysis; In: Applied Geochemistry. Issue 4. Analytical studies; (eds) Burenkov E K and Kremenetskii A A (Moscow: Institute of Mineralogy, Geochemistry and Crystallochemistry of Rare Elements) 15-19 (in Russian).
16. Demonterova E I and Ivanov A V 2003 Chromatographic extraction of Sr, Nd, Sm, Th, U and Pb from one aliquot for the following mass-spectrometric analysis; In: Proceedings of II Russian conference on isotopic geochronology (eds) Kozakov I K and Kotov A B (Sankt-Petersburg: Center of Informational Culture) 145-148 (in Russian).
17. DePaolo D J and Wasserburg G J 1979 Neodymium isotopes in flood basalts from the Siberian Platform and inferences about their mantle sources; Proceedings Natl. Acad. Sci. US 76 3056-3060.
18. Dobretsov N L 2003 Mantle plumes and their role in the formation of anorogenic granitoids; Geologiya i geofizika 44 1243-1261.
19. Dobretsov N L 2005 Large igneous provinces of Asia (250 Ma): Siberian and Emeishan traps (plateau basalts) and associated granitoids; Geologiya i geofizika 46 870-890.
20. Domyshev V G 1974 Pyroclastic strata, traps volcanism and tectonics at the southeast of Tunguska syncline (Novosibirsk: Nauka) (in Russian).
21. Dorendorf F, Wiechert U and Wörner G 2000 Hydrated sub-arc mantle: a source for the Klyuchevskoy volcano, Kamchatka/Russia; Earth Planet. Sci. Lett. 175 69-86.
22. Dun T and Sen C 1994 Mineral/matrix partition coefficients for orthopyroxene, plagioclase, and olivine in basaltic to andesitic systems: A combined analytical and experimental study; Geochim. Cosmochim. Acta. 58 717-733.
23. Dulski P 2001 Reference materials for geochemical studies: New analytical data by ICP-MS and critical discussion of reference values; Geostandards Newsletter: The Journal of Geostandards and Geoanalysis 25 73-81.
24. Elkins-Tanton L T 2005 Continental magmatism caused by lithospheric delamination; In: Plates, Plumes and Paradigms (eds) Foulger G R et al (Princeton: Geological Society of America Special Paper) 388 449-462.
25. Escrig S, Capmas F, Dupré B and Allègre C J 2004 Osmium isotopic constraints on the nature of the DUPAL anomaly from Indian mid-ocean-ridge basalts; Nature 431 59-63.
26. Erwin D 2003 Impact at the Permo-Triassic boundary: a critical evaluation; Astrobiology 3 67-74.
27. Erwin D H, Bowring S A and Yugan J 2002 End-Permian mass extinctions: A review; In: Catastrophic Events and Mass Extinctions: Impacts and Beyond (eds) Koeberl C and MacLeod K G (Boulder: Geological Society of America Special Paper) 356 363-383.
28. Fedorenko V I, Lightfoot P C, Naldrett A J, Czamanske G K, Hawkesworth C J, Wooden J L and Ebel D S 1996 Petrogenesis of the flood-basalt sequence at Noril'sk, North Central Siberia; Int. Geol. Rev. 38 99-135.
29. Fedorenko V I and Czamanske G K 1997 Results of new filed and geochemical studies of the volcanic and intrusive rocks of the Maymecha-Kotuy area, Siberian flood-basalt province, Russia; Int. Geol. Rev. 39 479-531.
30. Fedorenko V, Czamanske G, Zen'ko T, Budanh J and Siems D 2000 Field and geochemical studies of the melilite-bearing Arydzhangsky suite, and an overall perspective on the Siberian alkaline-ultramafic flood-volcanic rocks; Int. Geol. Rev. 42 769-804.
31. Feoktistov G D 1961 Petrography of traps from water-drain area of the middle current of the Angara river (Irkutsk; Transactions of East-Siberian Geological Institute, issue 7) (in Russian).
32. Feoktistov G D 1978 Petrology and conditions for formation of trap sills (Novosibirsk: Nauka) (in Russian).
33. Feoktistov G D 2003 Distribution of trace elements in traps of Southern Siberian Platform; Geochimiya 41 130-135 (in Russian).
34. Hart S R and Dun T 1993 Experimental cpx/melt partitioning of 24 trace elements; Contrib. Mineral. Petrol. 113 1-8.
35. 2O in nominally anhydrous minerals in the upper mantle; Earth Planet. Sci. Lett. 236 167-181.
36. Huang X G, Xu Y S and Karato S I 2005 Water content in the transition zone from electrical conductivity of wadsleyite and ringwoodite; Nature 434 746-749.
37. Ivanov A V 2007 Evaluation of different models for the origin of the Siberian Traps; In: The origin of melting anomalies: Plates, plumes and planetary processes (eds) Foulger G R and Jurdy D M (Princeton: Geological Society of America Special Paper) doi: 10.1130/2007.2430(31).
38. 39Ar dating of intrusive magmatism in the Angara-Taseevskaya syncline and its implication for duration of the Siberian Traps magmatic event; J. Asian Earth Sci.
39. Ivanov A V and Balyshev S V 2005 Mass flux across the lower-upper mantle boundary: vigorous, absent, or limited?; In: Plates, plumes and paradigms (eds) Foulger G R et al (Princeton: Geological Society of America Special Paper) 388, 327-346.
40. 39Ar dating of Usol'skii sill in the southeastern Siberian Traps Large Igneous Province: evidence for long-lived magmatism; Terra Nova 17 203-208.
41. Ivanov A V, Rasskazov S V, Chebykin E P, Markova M E and Saranina E V 2000 Y/Ho ratios in the Late Cenozoic basalts from the eastern Tuva, Russia: An ICP-MS study with enhanced data quality; Geostand. Newsl. J. Geostand. Geoanal. 24 197-204.
42. Irving A J 1978 A review of experimental studies of crystal/liquid trace element partitioning; Geochim. Cosmochim. Acta. 42 743-770.
43. Jones A P, Price G D, Price N J, DeCarli P S and Clegg R 2002 Impact induced melting and the development of large igneous provinces; Earth Planet. Sci. Lett. 202 551-561.
44. Kamo S L, Czamanske G K, Amelin Yu, Fedorenko V and Trofimov V 2000 U-Pb zircon and baddeleyite and U-Th-Pb perovskite ages for Siberian flood volcanism, Maimecha-Kotuy area, Siberia; J. Conf. Abs. (Goldshmit) 5(2) 569.
45. Kamo S L, Czamanske G K, Amelin Yu, Fedorenko V A, Davis D W and Trofimov V R 2003 Rapid eruption of Siberian flood-volcanic rocks and evidence for coincidence with the Permian-Triassic boundary and mass extinction at 251 Ma; Earth Planet. Sci. Lett. 214 75-91.
46. Katayama I, Nakashima S and Yurimoto H 2006 Water content in natural eclogite and implication for water transport into the deep upper mantle; Lithos 86 245-259.
47. Keays R R 2005 Why the high PGE contents of komatiites, picrites and allied rocks require mantle plumes; In: The Great Plume Debate: The origin and impact of LIPs and hot spots (Fort William, Scotland: AGU Chapman Conference) 33-34.
48. Kieffer B, Arndt N, Lapierre H, Bastien F, Bosch D, Pecher A, Yirgu G, Ayalew D, Weis D, Jerram D A, Keller F, Meugniot C 2004 Flood and shield basalts from Ethiopia: Magmas from African superswell; J. Petrol. 45 793-834.
49. King S D and Anderson D L 1998 Edge-driven convection; Earth Planet. Sci. Lett. 160 289-296.
50. Klemme S, Prowatke S, Hametner K and Günther D 2005 Partitioning of trace elements between rutile and silicate melts: Implications for subduction zones; Geochim. Cosmochim. Acta. 69 2361-2371.
51. Koeberl C, Gilmour L, Reimold W U, Claeys P and Ivanov B 2002 End-Permian catastrophe by bolide impact: Evidence of a gigantic release of sulfur from the mantle: Comment; Geology 30 855-856.
52. Le Bas M J and Streckeisen A L 1991 The IUGS systematics of igneous rocks; J. Geol. Soc. London 148 825-833.
53. Letnikov F A, Feoktistov G D, Ostafiichuk I M, Kiselev A I, Kharin G S, Grudinin M I, Molyavko V G and Tolstoi M I 1980 Fluid regime of formation of mantle rocks (Novosibirsk: Nauka) (in Russian).
54. Lightfoot P C, Hawkesworth C J, Hergt J, Naldrett A J, Gorbachev N S, Fedorenko V A and Doherty W 1993 Remobilisation of the continental lithosphere by a mantle plume: major-, trace-element, and Sr-, Nf-, and Pb- isotope, evidence from picritic and tholeitic lavas of the Noril'sk District, Siberian Trap, Russia; Contrib. Mineral. Petrol. 114 171-188.
55. Lightfoot P C and Keays R R 2005 Siderophile and chalcophile metal variations in flood basalts from the Siberian Trap, Noril'sk region: implication for the origin of the Ni-Cu-PGE sulfide ores; Economic Geology 100 439-462.
56. Lin S C and van Keken P E 2005 Multiple volcanic episodes of flood basalts caused by thermochemical mantle plumes; Nature 436 250-252.
57. 2O system up to 25 GPa; Phys. Chem. Minerals 30 147-156.
58. Litasov K D, Ohtani E, Sano A, Suzuki A and Funakoshi K 2005 Wet subduction versus cold subduction; Geophys. Res. Lett. 32 1-5.
59. Lustrino M 2005 How the delamination and detachment of the lower crust can influence basaltic magmatism; Earth-Sci. Rev. 72 21-38.
60. Malitch N S (Editor-in-Chief) 1999 Geological map of Siberian platform and adjoining areas Scale 1:1500000 (St-Petersburg: VSEGEI).
61. Masaitis V L 1983 Permian and Triassic volcanism of Siberia; Zapiski Vserossiiskogo Mineralogicheskogo Obshestva 4 412-425 (in Russian).
62. Matsukage K N, Jing Z C and Karato S 2005 Density of hydrous silicate melt at the conditions of Earth's deep upper mantle; Nature 438 488-491.
63. Macdonald G A and Katsura T 1964 Chemical composition of Hawaiian lavas; J. Petrol. 5 82-133.
64. McDonough W F and Sun S-S 1995 The composition of the Earth; Chem. Geol. 120 223-253.
65. Medvedev A Ya, Al'mukhamedov A I and Kirda N P 2003 Geochemistry of Permo-Triassic volcanic rocks of West Siberia; Geologiya i Geofizika 44 86-100.
66. Melekestsev I V, Volynets O N, Ermakov V A, Kinsanova T P and Masurenkov Yu P 1991 The Shiveluch volcano; Active volcanoes of Kamchatka, v. 1 (Moscow: Nauka) 84-103 (in Russian).
67. Middlemost E A K 1989 Iron oxidation ratios, norms and the classification of volcanic rocks; Chem. Geol. 77 19-26.
68. Molzahn M, Reisberg L and Wörner G 1996 Os, Sr, Nd, Pb, O isotope and trace element data from Ferrar flood basalts, Antarctica: evidence for enriched subcontinental lithospheric source; Earth Planet. Sci. Lett. 144 529-546.
69. Nikishin A M, Ziegler P A, Abbott D, Brunet M-F and Cloetingh S 2002 Permo-Triassic intraplate magmatism and rifting in Eurasia: implications for mantle plumes and mantle dynamics; Tectonophys. 351 3-39.
70. Ohtani E 2005 Water in the mantle; Elements 1(1) 25-30.
71. Orihasi Y, Maeda J, Niida K and Ishihara S 1997 Analysis of Nd isotope ratio for the GSJ reference sample Jndi-1. HUEPS Technical Report No 1 (Hokkaido Univ., Japan).
72. Pearson D G, Irvine G J, Ionov D A, Boyd F R and Dreibus G E 2004 Re-Os isotope systematics and platinum group element fractionation during mantle melt extraction: a study of massif and xenolith peridotite suites; Chem. Geol. 208 29-59.
73. Perepelov A B, Bazanova L I, Florensky I V and Baluev E Y 1986 Geochemical evolution of the Late Cenozoic magmatism of the southeastern flank of the Malko-Petropavlovsk zone of the cross-cut fault dislocations (Kamchatka); In: Geochemistry of magmatic rocks from different geodynamic settings (Novosibirsk: Nauka) 165-179 (in Russian).
74. Pin C and Bassin C 1992 Evaluation of a strontium-specific extraction chromatographic method for isotopic analysis in geological materials; Anal. Chem. Acta 269 249-255.
75. Pin C, Briot D, Bassin C and Poitrasson F 1994 Concomitant separation of strontium and samarium-neodymium for isotopic analysis in silicate samples, based on specific extraction chromatography; Anal. Chem. Acta 293 209-217.
76. 2O, S, Cl, F) and trace elements in melt inclusions from the Kamchatka Arc; Earth Planet. Sci. Lett. 255 53-69.
77. Puffer J H 2001 Contrasting high filed strength element content of continental flood basalts from plume versus reactivated-arc sources; Geology 29 675-678.
78. Pushkarev Yu D 1997 Two kinds of the crust-mantle interaction and a new approach to the deep-earth ore-formation problems; Doklady Earth Sciences 355 524-526.
79. 39Ar dates from the West Siberian Basin: Siberian flood basalt province doubled; Science 296 1846-1849.
80. Reichow M K, Saunders A D, White R V, Al'mukhamedov A I and Medvedev A Ya 2005 Geochemistry and petrogenesis of basalts from the West Siberian Basin: an extension of the Permo-Triassic Traps, Russia; Lithos 79 425-452.
81. Renne P R 1995 Excess Ar-40 in biotite and hornblende from the Norilsk-1 intrusion, Siberia - Implications for the Age of the Siberian Traps; Earth Planet. Sci. Lett. 131: 165-176
82. Renne P R and Basu A R 1991 Rapid eruption of the Siberian Traps flood basalts at the Permo-Triassic boundary; Science 253 176-179.
83. Rudnick R L and Fountain D M 1995 Nature and composition of the continental crust: a lower crustal perspective; Rev. Geophys. 33 267-309.
84. Ryabchikov I D, Ntaflos Th, Büchl A and Solovova I P 2001 Subalkaline picrobasalts and plateau basalts from Putcrana Plateau (Siberian CFB province). 1. Mineral compositions and geochemistry of major and trace elements; Geokhimiya 5 467-483.
85. Ryabov V V, Shevko A Ya and Gora M P 2001 Magmatic formations in Noril'sk region. Volume 1. Trapp petrology (Novosibirsk: Nonparel Publishers) (in Russian).
86. Sakamaki T, Suzuki A and Ohtani E 2006 Stability of hydrous melt at the base of the Earth's upper mantle; Nature 439 192-194.
87. Saunders A D, England R W, Reichow M K and White R V 2005 A mantle plume origin for the Siberian traps: uplift and extension in the West Siberian Basin, Russia; Lithos 79 407-424.
88. Sharma M, Basu A R and Nesterenko G V 1991 Temporal Sr, Nd-, and Pb-isotopic variations in the Siberian flood basalts: Implications for the plume-source characteristics; Earth Planet. Sci. Lett. 113 365-381.
89. Shatsky V S, Sitnikova E S, Koz'menko O A, Palessky S V, Nikolaeva I V and Zayachkovsky A A 2006 Behavior of incompatible elements during ultrahigh-pressure metamorphism (by the example of rocks of the Kokchetav massif); Rus. Geol. Geophys. 47 482-496.
90. Shaw D M 1970 Race element fractionation during anatexis; Geochim. Cosmochim. Acta. 34 237-243.
91. Sheth H C, Torre-Alvarado I S and Verma S P 2002 What is the "calc-alkaline rock series?"; Int. Geol. Rev. 44 686-701.
92. Silver P G, Behn M D, Kelley K, Schmitz M and Savage B 2006 Understanding cratonic flood basalts; Earth Planet. Sci. Lett. 245 190-201.
93. Smyth J R, Frost D J, Nestola F, Holl C M and Bromiley G 2006 Olivine hydration in the deep upper mantle: Effect of temperature and silica activity; Geophys. Res. Lett. 33 L15301.
94. Sobolev A V, Hofmann A W, Kuzrbin D V, Yaxley G M, Arndt N T, Chung S-L, Danyushevsky L V, Elliot T, Frey F A, Garcia M O, Gurenko, A A, Kamenetsky V S, Kerr A C, Krivolutskaya N A, Matvienkov V V, Nikogosian I K, Rocholl A, Sigurdsson I A, Sushchevskaya N M and Teklay M 2007 The amount of recycled crust in sources of mantle-derived melts; Science 316 412-417.
95. Spetsius Z V 2004 Petrology of highly aluminous xenoliths from kimberlites of Yakutia; Lithos 77 525-538.
96. Sun S-S and McDonough W F 1989 Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and process; In: Magmatism in the oceanic basins (eds) Sounders A D and Norry, M J (Geol. Soc. Spec. Publ.) 42 313-345.
97. Tanton L T E and Hager B H 2000 Melt intrusion as a trigger for lithospheric foundering and the Eruption of Siberian flood basalts; Geophys. Res. Lett. 27 3937-3940.
98. Taylor S R and McLennan S M 1985 The continental crust: its composition and evolution. An examination of the geochemical record presented in sedimentary rocks (Oxford: Blackwell).
99. 2O in the genesis of mantle-derived 'arc-related' magmas; Phys. Earth. Planet. Interiors 127 215-232.
100. Vasil'ev Yu R, Zolotukhin V V, Feoktistov G D and Prusskaya S N 2000 Evaluation of the volumes and genesis of Permo-Triassic Trap magmatism of the Siberian Platform; Geologiya i Geofizika 41 1696-1705 (in Russian).
101. Verma S P, Torres-Alvarado I S and Sotelo-Rodriguez Z T 2002 SINCLAS: standard igneous norm and volcanic rock classification system; Comput. Geosci. 28 711-715.
102. Vilenskii A M 1967 Petrology of intrusive traps of the northern Siberian platform (Moscow: Nauka) (in Russian).
103. Volynets O N, Ponomareva V V and Babansky A D 1997 Magnesian basalts of Shiveluch andesite volcano Kamchatka; Petrology5 183-196.
104. 186Os isotope system to geochemistry and cosmochemistry; Geochim. Cosmochim. Acta 61 4799-4807.
105. Wooden J L, Czamanske G K, Fedorenko V A, Arndt N T, Chauvel C, Bouse R M, King B-S W, Knight R J and Siems D F 1993 Isotopic and trace-element constraints on mantle and crustal contributions to characterization of Siberian continental flood basalts, Noril'sk area, Siberia; Geochim. Cosmochim. Acta 57 3677-3704.
106. Yasnygina T A, Rasskazov S V, Markova ME, Ivanov A V and Demonterova E I 2003 Determination of trace elements in volcanic rocks of basic and intermediate composition by ICP-MS method using microwave oven acid decomposition technique; In: Applied Geochemistry. Issue 4. Analytical studies; (eds) Burenkov E K and Kremenetskii A A (Moscow: Institute of Mineralogy, Geochemistry and Crystallochemistry of Rare Elements) 48-56 (in Russian).
107. Yarmolyuk V V, Litvinovsky B A, Kovalenko V I, Jahn B M, Zanvilevich A N, Vorontsov A A, Zhuravlev D Z, Posokhov V F, Kuz'min D V and Sandimirova G P 2001 Formation stages and sources of the peralkaline granitoid magmatism of the Northern Mongolia-Transbaikalia rift belt during the Permian and Triassic; Petrology 9 302-328.
108. Yasuda A and Fujii T 1998 Ascending subducted oceanic crust entrained within mantle plumes; Geophys. Res. Lett. 25 1561-1564.
109. Zolotukhin V V 1997 Basic pegmatoids and Norilsk-type PGE mineralization; Geologiya i Geofizika 38 1096-1105 (in Russian).
110. Zolotukhin V V, Vilenskii A M and Dyuihikov O A 1986 Basalts of Siberian platform (Novosibirsk: Nauka) (in Russian).
111. Zonenshain L P, Kuzmin M I and Natapov L M 1990 Geology of the USSR: plate tectonic synthesis (Am. Geophys. Union Geodynamic Ser. 21).
112. Zorin Y A 1999 Geodynamics of the western part of the Mongolia-Okhotsk Collisional belt, Trans-Baikal region (Russia) and Mongolia; Tectonophys. 306 33-56.
113. Zorin Yu A, Belichenko V G, Turutanov E K, Kozhevnikov V M, Sklyarov E V, Tomurtogoo, O, Khosbayar P, Arvisbaatar N and Biambaa C 1998 Terranes of East Mongolia and Central Trans-Baikal region and evolution of the Mongolia-Okhotsk fold belt; Geologiya i Geofizika 39 11-25.
114. Zorin Y A and Vladimirov B M 1989 On the genesis of trap magmatism of the Siberian platform; Earth Planet. Sci. Lett. 93 109-112.