Oblique rift geometry of the West Siberian Basin: tectonic setting for the Siberian flood basalts
نویسندگان
چکیده
منابع مشابه
Siberian Flood Basalts
techniques and fractionation correcting to a 194Pt/ 95pt ratio of 0.9734 (38). 33. E. Anders and N. Grevesse, Geochim. Cosmochim. Acta 53, 197(1989). 34. M. P. Gorton, E. S. Schandl, A. J. Naldrett, Ocean Drilling Project Scientific Results, Leg 140, in press. 35. R. J. Walker et al., Geochim. Cosmochim. Acta 58, 4179 (1994); M. F. Horan, R. J. Walker, V. A. Fedorenko, G. K. Czamanske, ibid., i...
متن کامل40Ar/39Ar dates from the West Siberian Basin: Siberian flood basalt province doubled.
Widespread basaltic volcanism occurred in the region of the West Siberian Basin in central Russia during Permo-Triassic times. New 40Ar/39Ar age determinations on plagioclase grains from deep boreholes in the basin reveal that the basalts were erupted 249.4 +/- 0.5 million years ago. This is synchronous with the bulk of the Siberian Traps, erupted further east on the Siberian Platform. The age ...
متن کاملThe basalt geometry in the west siberian basin from satellite gravity, magnetics and seismics
Adding new value to Electromagnetic, Gravity and Magnetic Methods for Exploration Capri, Italy, April 11-14, 2010 The basalt geometry in the west siberian basin from satellite gravity, magnetics and seismics S. Ferrante(), C. Braitenberg (), J. Ebbing () () Dipartimento di Geoscienze, Università di Trieste, Trieste, Italy( ), Geological Survey of Norway (NGU), Trondheim, Norway, and Department...
متن کاملRapid eruption of the siberian traps flood basalts at the permo-triassic boundary.
The Siberian Traps represent one of the most voluminous flood basalt provinces on Earth. Laser-heating (40)Ar/(39)Ar data indicate that the bulk of these basalts was erupted over an extremely short time interval (900,000 +/- 800,000 years) beginning at about 248 million years ago at mean eruption rates of greater than 1.3 cubic kilometers per year. Such rates are consistent with a mantle plume ...
متن کاملNeodymium isotopes in flood basalts from the Siberian Platform and inferences about their mantle sources.
The initial isotopic compositions of Nd and Sr in basalts from the Central Siberian Plateau and other major continental flood basalts are reported. The continental flood basalts appear to be the product of partial melting of mantle sources that consist of relatively primitive undifferentiated material and are clearly distinct from midocean ridge basalts, which sample mantle reservoirs that have...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Geological Society
سال: 2006
ISSN: 0016-7649,2041-479X
DOI: 10.1144/0016-76492006-096