A minimum UPb age for Siberian flood-basalt volcanism

Kamo, Sandra L.; Czamanske, Gerald K.; Krogh, T. E.

doi:10.1016/0016-7037(96)00173-1

Cited by 147 publications

(57 citation statements)

References 29 publications

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“…We minimised the problems associated with differences related to the 40 These ages confirm previous estimates of the short duration of magmatism, based on U-Pb 409 age determinations, of <2 Ma (Kamo et al, 1996(Kamo et al, , 2003. 410…”

Section: P-tr Boundary Section (Bed 28) Meishan China 384supporting

confidence: 58%

“…Several authors have proposed that the Siberian volcanism is synchronous with the P-Tr 539 boundary and associated mass extinction (e.g., Renne et al, 1995;Kamo et al, 1996Kamo et al, , 2003540 Campbell et al, 1992) and consequently inferred that the volcanism was responsible for the 541 end Permian climatic changes. Most correlations were based on the P-Tr boundary age 542 although this boundary does not record the main extinction, which peaked at the top of Bed 543 24 at Meishan (Jin et al, 2000).…”

Section: Relative Timing Of the P-tr Mass Extinction Event And The Simentioning

confidence: 99%

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The timing and extent of the eruption of the Siberian Traps large igneous province: Implications for the end-Permian environmental crisis

Reichow

Pringle

Al’mukhamedov

et al. 2009

Earth and Planetary Science Letters

466

205

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Section: P-tr Boundary Section (Bed 28) Meishan China 384supporting

confidence: 58%

Section: Relative Timing Of the P-tr Mass Extinction Event And The Simentioning

confidence: 99%

The timing and extent of the eruption of the Siberian Traps large igneous province: Implications for the end-Permian environmental crisis

Reichow

Pringle

Al’mukhamedov

et al. 2009

Earth and Planetary Science Letters

466

205

View full text Add to dashboard Cite

“…For example, Walker et al (1994) obtained Re-Os ages of 245.7 ± 0.6 and 247.0 ± 3.8 Ma, respectively, for the Noril'sk I Talnakh and Kharaelakh intrusions in Siberia. These two ages are similar to zircon U-Pb ages of 248±4 (Campbell et al 1992) and 251.2±0.3 Ma (Kamo et al 1996). Sulfides of komatiitehosted magmatic sulfide deposits in Kambalda have a Re-Os age of 2,706±36 Ma, which is the same within error of zircon U-Pb ages of 2,703±4 and 2,709±6 Ma (Foster et al 1996 and reference therein).…”

Section: Introductionsupporting

confidence: 65%

Heterogeneous Os isotope compositions in the Kalatongke sulfide deposit, NW China: the role of crustal contamination

Gao

Zhou

Lightfoot³

et al. 2012

Miner Deposita

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Re-Os isotope compositions of mantle-derived magmas are highly sensitive to crustal contamination because the crust and mantle have very different Os isotope compositions. Crustal contamination may trigger S saturation and thus the formation of magmatic Ni-Cu-(PGE) sulfide deposits. The ∼287-Ma Kalatongke norite intrusion of NW China are hosted in carboniferous tuffaceous rocks and contain both disseminated and massive sulfide mineralization. The Re-Os isotope compositions in the intrusion are highly variable. Norite and massive sulfide ores have γ Os values ranging from +59 to +160 and a Re-Os isochron age of 239±51 Ma, whereas disseminated sulfide ores have γ Os values from +117 to +198 and a Re-Os isochron age of 349±34 Ma. The variability of Os isotope compositions can be explained as the emplacement of two distinct magma pulses. Massive sulfide ores and barren norite in the intrusion formed from the same magma pulse, whereas the disseminated sulfide ores with more radiogenic Os isotopes formed from another magma pulse which underwent different degrees of crustal contamination. Re-Os isotopes may not be suitable for dating sulfidebearing intrusions that underwent variable degrees of crustal contamination to form magmatic sulfide deposits.

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“…Campbell et al [21] dated zircons using U-Pb via the SHRIMP ion microprobe to obtain 251.1 ± 3.6 Ma. Kamo et al [90] obtained a compatible U-Pb age of 251.2 ± 0.3 Ma on an intrusion in the lower part of the series. Magnetic stratigraphy [63,106] shows evidence for few reversals (only one is clear, with the possibility for other, shorter events which remain to be ascertained), consistent with a short total duration of volcanism.…”

Section: The Siberian Trapsmentioning

confidence: 99%

On the ages of flood basalt events

Courtillot

Renne

2003

Comptes Rendus. Géoscience

744

400

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We review available data constraining the extent, volume, age and duration of all major Phanerozoic continental flood basalts (CFB or traps) and oceanic plateaus (OP), together forming the group of large igneous provinces (LIP), going from the smallest Columbia flood basalts at ∼16 Ma to the as yet ill-known remnants of a possible trap at ∼360 Ma in eastern Siberia. The 16 traps (CFB and OP) reviewed form a rather unimodal distribution with an initial modal volume of the order of 2.5 Mkm 3 . Most provinces agree with a rather simple first order model in which volcanism may have lasted of the order of 10 Ma, often resulting in continental break-up, but where most of the volume was erupted in about 1 Ma or sometimes less. This makes CFBs/OPs (LIPs) major geodynamic events, with fluxes exceeding the total output of present day hot spots and even possibly exceeding over short times the entire crustal production of mid-ocean ridges. The proposed correlation between trap ages and the ages of several geological events, including mass extinctions and oceanic anoxia, is found to have improved steadily as more data have become available, to the point that the list of trap ages may coincide with many major divisions in the geological time scale. The four largest mass extinctions in the last 260 Ma coincide to the best resolution available with four traps, making a causal connection between the two through some form of catastrophic climatic perturbations the most likely hypothesis. The time sequence of LIPs appears to have been random and there is no robust evidence for long time trends in the corresponding crustal production rate over the last 260 Ma.  2003 Académie des sciences/Éditions scientifiques et médicales Elsevier SAS. All rights reserved. RésuméNous passons en revue l'ensemble des données qui permettent de contraindre l'étendue, le volume, l'âge et la durée de toutes les grandes provinces magmatiques basaltiques (en anglais LIP) d'âge Phanérozoïque, qu'il s'agisse des trapps ou plateaux basaltiques continentaux (en anglais CFB) ou des plateaux océaniques (OP), allant de la plus récente et plus petite (le plateau de Columbia âgé de ∼16 Ma) à l'une des plus anciennes, encore mal connue, située dans l'Est de la Sibérie et sans doute âgée de ∼360 Ma. Les 16 provinces passées en revue forment une distribution assez unimodale, avec des volumes initiaux de lave de l'ordre de 2,5 Mkm 3 . La plupart des provinces sont compatibles, au premier ordre, avec un modèle simple selon lequel le volcanisme a pu durer une dizaine de millions d'années et a en général conduit à une déchirure des continents et à l'ouverture d'un nouveau bassin océanique, mais où l'essentiel du volume des laves a été émis en environ 1 million d'années, parfois moins. Ceci fait des trapps (des LIP en général) des événements géodynamiques majeurs, avec des flux de matière ayant dépassé la production totale actuelle des points chauds et même, peut-être, pendant de brefs intervalles, la totalité de la production de croûte V.E. Courtillot, P.R. Renn...

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A minimum UPb age for Siberian flood-basalt volcanism

Cited by 147 publications

References 29 publications

The timing and extent of the eruption of the Siberian Traps large igneous province: Implications for the end-Permian environmental crisis

The timing and extent of the eruption of the Siberian Traps large igneous province: Implications for the end-Permian environmental crisis

Heterogeneous Os isotope compositions in the Kalatongke sulfide deposit, NW China: the role of crustal contamination

On the ages of flood basalt events

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