Traps of the Siberian Platform

Zolotukhin, V. V.; Al’mukhamedov, A. I.

doi:10.1007/978-94-015-7805-9_8

Cited by 79 publications

(48 citation statements)

References 10 publications

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“…The extent to which sills and dykes contribute to magma transport onto the Earth's surface in many large igneous provinces remains unclear (e.g., Muirhead et al, 2014). Intrusive rocks related to the Siberian Traps contribute an estimated 44% of the known volcanic volume and represent along the south-eastern periphery of the Siberian craton the only magmatic 15 expression (Zolotukhin and Al'Mukhamedov, 1988). There is no indication that crustal-scale discontinuities, such as faults or folding, control the distribution of intrusive and/or lavas in the region.…”

Section: Sills or Lavas?mentioning

confidence: 99%

“…If this hypothesis is correct it will not only have implications on the Taimyr intrusive history but also for dated intrusives with similar disturbed release pattern from the entire Siberian Traps (e.g., Dalrymple et al, 1995) as well as other large igneous provinces. The timing of emplacement of sills and dykes is an important issue as these may have a similar if not larger volume than the Traps basalts on the Siberian craton (e.g., Zolotukhin and Al'Mukhamedov, 1988). If sill and dyke emplacement in Taimyr occurred before 247 Ma, Torsvik and Andersen's (2002) argument that magmatism induced the thermal re-magnetisation of sediments between 230 and 220 Ma needs to be reassessed.…”

Section: Implications For the Timing Of Magmatism In Taimyrmentioning

confidence: 99%

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Petrogenesis and timing of mafic magmatism, South Taimyr, Arctic Siberia: A northerly continuation of the Siberian Traps?

Reichow

Saunders

Scott

et al. 2016

Lithos

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The Siberian large igneous province (LIP) forms the world's most extensive continental exposure of basalt and has several sub-provinces surrounding it, which may be genetically related. The Taimyr peninsula of north Siberia is one of these sub-provinces and is frequently assumed to be the northerly continuation of the basalts exposed at Noril'sk, the best-studied area of the Siberian LIP. However, the correlation is uncertain. The major and trace element data for both groups are consistent with a process of fractional crystallisation coupled with small degrees of assimilation of incompatibleelement-enriched lower crust involving different contaminants. Trace element model calculations indicate a process of magma formation at large degrees of partial melting and at pressures of less than 3 GPa, probably within the garnet-spinel transition zone or the spinel stability field of the asthenospheric mantle. We obtained an argon plateau age of ~252 (252.7 ± 1.5) Ma and a ~239 Ma total fusion age from a Taimyr lava and intrusive sample, respectively, confirming that volcanism is only partly contemporaneous with the activity of the Siberian LIP. Although this is in agreement with previous interpretations, we argue that the age difference between both events is only ~13 myrs and probably less (~5 myrs) although further investigation of the relationship is required. Our data allow correlation with distinct Noril'sk members and most importantly to the ore-bearing (Ni-Cu) intrusions implying that whole rock chemistry could have value as a prospecting tool in Taimyr.

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Section: Sills or Lavas?mentioning

confidence: 99%

Section: Implications For the Timing Of Magmatism In Taimyrmentioning

confidence: 99%

Petrogenesis and timing of mafic magmatism, South Taimyr, Arctic Siberia: A northerly continuation of the Siberian Traps?

Reichow

Saunders

Scott

et al. 2016

Lithos

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“…Granite was replaced with flood basalts of appropriate age and size based on published data concerning large igneous provinces [74][75][76][77][78] and websites hosted by the universities of Leicester (http://www.le.ac.uk/gl/ads/SiberianTraps/Index.html) and Bristol (http://palaeo.gly.bris. ac.uk/Palaeofiles/Permian/SiberianTraps.html).…”

Section: Weathering In the Past (A) Palaeolithologymentioning

confidence: 99%

Evaluating the effects of terrestrial ecosystems, climate and carbon dioxide on weathering over geological time: a global-scale process-based approach

Taylor

Banwart

Valdes

et al. 2012

Phil. Trans. R. Soc. B

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Global weathering of calcium and magnesium silicate rocks provides the long-term sink for atmospheric carbon dioxide (CO 2 ) on a timescale of millions of years by causing precipitation of calcium carbonates on the seafloor. Catchment-scale field studies consistently indicate that vegetation increases silicate rock weathering, but incorporating the effects of trees and fungal symbionts into geochemical carbon cycle models has relied upon simple empirical scaling functions. Here, we describe the development and application of a process-based approach to deriving quantitative estimates of weathering by plant roots, associated symbiotic mycorrhizal fungi and climate. Our approach accounts for the influence of terrestrial primary productivity via nutrient uptake on soil chemistry and mineral weathering, driven by simulations using a dynamic global vegetation model coupled to an ocean -atmosphere general circulation model of the Earth's climate. The strategy is successfully validated against observations of weathering in watersheds around the world, indicating that it may have some utility when extrapolated into the past. When applied to a suite of six global simulations from 215 to 50 Ma, we find significantly larger effects over the past 220 Myr relative to the present day. Vegetation and mycorrhizal fungi enhanced climate-driven weathering by a factor of up to 2. Overall, we demonstrate a more realistic process-based treatment of plant fungal -geosphere interactions at the global scale, which constitutes a first step towards developing 'next-generation' geochemical models.

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“…The storage capacity is calculated as follows: Hooper (1988), (b) Mahoney (1988), (c) Zolotukhin and Al'mukhamedov (1988), (d) Mohr and Zanettin (1988), (e) Piccirillo et al (1988), and (f) Gudbrandsson et al (2008).…”

Section: Continental Flood Basaltsmentioning

confidence: 99%

Geological, geochemical and social-scientific assessment of basaltic aquifers as potential storage sites for CO2

2013

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known engineering problems would prevent large-scale implementation of CO 2 storage in such aquifers. The greatest remaining need is to ensure storage security. During CO 2 sequestration in deep aquifers, the captured CO 2 is typically injected into a formation at depths of more than 800 m, where pressure and temperature are above the critical point of CO 2 (31.1°C, 7.38 MPa) (Bachu, 2002). Because supercritical fluids are highly mobile, however, the injected CO 2 might flow in the aquifer and CO 2 might leak to the surface. Storage security therefore depends on restricting CO 2 flow in the storage aquifer.Injected CO 2 can be trapped by either physical or geochemical trapping mechanisms. Structural/ stratigraphic, gravitational, and residual gas trapping are physical mechanisms. In structural/stratigraphic trapping injected CO 2 is stored as a gas, liquid, or supercritical August 24, 2012; Accepted March 9, 2013) Basaltic aquifers have the potential to provide secure option for CO 2 sequestration. Because basaltic rocks are widely distributed around the world, their capacity for storage of anthropogenic CO 2 emissions is enormous. In addition, geochemical trapping of CO 2 injected into basaltic aquifers occurs quickly, because basaltic rocks contain many cations that react with CO 2 to form stable carbonate minerals. Two types of large-scale basaltic aquifers may be suitable for sequestering huge amounts of anthropogenic CO 2 : continental flood basalt aquifers and deep-sea basalt aquifers. Here, we assess the potential of these two CO 2 sequestration options from geological, geochemical and social-scientific perspectives.From a geological and geochemical viewpoint, both continental flood basalt and deep-sea basalt aquifers have excellent CO 2 storage potential. In deep-sea basalt aquifers, however, storage of injected CO 2 may be more secure than in continental flood basalt aquifers, because leakage of CO 2 to the atmosphere is minimized by geological, geochemical and physical barriers associated with the deep-sea environment. In addition, from a social-scientific point of view, several current CO 2 injection projects in continental flood basalts have encountered problems due to groundwater depletion, and large-scale implementation of CO 2 storage in continental flood basalt aquifers might cause contamination of freshwater resources needed for domestic and agricultural use. In striking contrast to continental flood basalts, deep-sea basalts can be used for CO 2 storage without encountering critical problems, because deep-sea basalt aquifers have no economic value. We conclude, therefore, that deep-sea basalt aquifers are a better option for CO 2 storage than continental flood basalt aquifers.

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Traps of the Siberian Platform

Cited by 79 publications

References 10 publications

Petrogenesis and timing of mafic magmatism, South Taimyr, Arctic Siberia: A northerly continuation of the Siberian Traps?

Petrogenesis and timing of mafic magmatism, South Taimyr, Arctic Siberia: A northerly continuation of the Siberian Traps?

Evaluating the effects of terrestrial ecosystems, climate and carbon dioxide on weathering over geological time: a global-scale process-based approach

Geological, geochemical and social-scientific assessment of basaltic aquifers as potential storage sites for CO2

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