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Skagerrak-Centered Large Igneous Province

December 07, 2023

The Skagerrak-Centered Large Igneous Province (SCLIP), also known as the European-Northwest African Large Igneous Province (EUNWA),[1] and Jutland LIP, is a 300 million year old (Ma) large igneous province (LIP) centered on what is today the Skagerrak strait in north-western Europe (57°50′N 9°04′E / 57.833°N 9.067°E / 57.833; 9.067, paleocoordinates[2] 11°N 16°E / 11°N 16°E / 11; 16 (south of Lake Chad)). It was named by Torsvik et al. 2008.

The SCLIP covered an area of at least 0.5×10^6 km2 (0.19×10^6 sq mi) and includes the Oslo and Skagerrak grabens, areas in south-western Sweden, Scotland, northern England, and the central North Sea. The SCLIP erupted at 297±4 Ma.[3] It produced 228,000 km² of currently exposed volcanic material that can be found in Skagerrak, the Oslo Fjord, central North Sea, North-east Germany; 14,000 km² of sills in Scotland, England, Germany, The Netherlands, and Sweden; and 3,353 km total length of dykes in Scotland, Norway, and Sweden.[4] The period of eruptions comprised a relatively short time span, perhaps less than 4 Ma, but magma propagated more than 1,000 km (620 mi) from the plume centre.[5]

Plumes derived from a superplume (or Large Low Shear Velocity Province (LLSVP)) overlay the boundary of the superplume at the core-mantle boundary (CMB).[6] To test whether the SCLIP met these criteria, Torsvik et al. used a shear-wave tomographic model of the mantle, in which the SCLIP indeed do project down to the margin of the African superplume at the CMB at a depth of 2800 km.[2] A series of LIPs are associated with the African superplume, of which the SCLIP is the oldest: SCLIP (300 Ma), Bachu (275 Ma), Emeishan (260 Ma), Siberian (250 Ma), and Central Atlantic (200 Ma). Its possible that these plumes together caused the break-up of Pangaea and therefore play an important role in the supercontinent cycle.[7]

The SCLIP is associated with the Moscovian and Kasimovian stages of the Carboniferous rainforest collapse around 296-310 Ma together with the Siberian Barguzin-Vitim LIP. [8]

See also edit

References edit

  1. ^ E.g. Doblas et al. 1998, Abstract; Bryan & Ferrari 2013, Fig. 1, p. 1054
  2. ^ a b Torsvik et al. 2008, Relationship of the Skagerrak LIP eruption site to the deep mantle, pp. 447–448
  3. ^ Torsvik et al. 2008, The Skagerrak-Centered Large Igneous Province, pp. 444–445
  4. ^ Torsvik et al. 2008, Fig. 1, p. 445
  5. ^ Torsvik et al. 2008, Conclusions, p. 451
  6. ^ Torsvik et al. 2008, Was the SCLIP generated by a mantle plume?, pp. 445-446
  7. ^ Li & Zhong 2009, Superplume record during the Pangean cycle, pp. 146–147
  8. ^ Kravchinsky 2012, Table 1, p. 33

Bibliography edit

  • Bryan, S. E.; Ferrari, L. (2013). "Large igneous provinces and silicic large igneous provinces: Progress in our understanding over the last 25 years". Geological Society of America Bulletin. 125 (7–8): 1053–1078. Bibcode:2013GSAB..125.1053B. doi:10.1130/B30820.1. Retrieved 3 April 2016.
  • Doblas, M.; Oyarzun, R.; Lopez-Ruiz, J.; Cebriá, J. M.; Youbi, N.; Mahecha, V.; Lago, M.; Pocoví, A.; Cabanis, B. (1998). "Permo-Carboniferous volcanism in Europe and northwest Africa: a superplume exhaust valve in the centre of Pangaea?". Journal of African Earth Sciences. 26 (1): 89–99. Bibcode:1998JAfES..26...89D. doi:10.1016/S0899-5362(97)00138-3. Retrieved 3 April 2016.
  • Kravchinsky, V. A. (2012). "Paleozoic large igneous provinces of Northern Eurasia: Correlation with mass extinction events". Global and Planetary Change. 86–87: 31–36. Bibcode:2012GPC....86...31K. doi:10.1016/j.gloplacha.2012.01.007. Retrieved 3 April 2016.
  • Li, Z. X.; Zhong, S. (2009). "Supercontinent–superplume coupling, true polar wander and plume mobility: plate dominance in whole-mantle tectonics" (PDF). Physics of the Earth and Planetary Interiors. 176 (3): 143–156. Bibcode:2009PEPI..176..143L. doi:10.1016/j.pepi.2009.05.004. Retrieved 3 April 2016.
  • Torsvik, T. H.; Smethurst, M. A.; Burke, K.; Steinberger, B. (2008). "Long term stability in deep mantle structure: Evidence from the ~300 Ma Skagerrak-Centered Large Igneous Province (the SCLIP)" (PDF). Earth and Planetary Science Letters. 267 (3): 444–452. Bibcode:2008E&PSL.267..444T. doi:10.1016/j.epsl.2007.12.004. Retrieved 3 April 2016.

December 07, 2023
skagerrak, centered, large, igneous, province, sclip, also, known, european, northwest, african, large, igneous, province, eunwa, jutland, million, year, large, igneous, province, centered, what, today, skagerrak, strait, north, western, europe, paleocoordinat. The Skagerrak Centered Large Igneous Province SCLIP also known as the European Northwest African Large Igneous Province EUNWA 1 and Jutland LIP is a 300 million year old Ma large igneous province LIP centered on what is today the Skagerrak strait in north western Europe 57 50 N 9 04 E 57 833 N 9 067 E 57 833 9 067 paleocoordinates 2 11 N 16 E 11 N 16 E 11 16 south of Lake Chad It was named by Torsvik et al 2008 The SCLIP covered an area of at least 0 5 10 6 km2 0 19 10 6 sq mi and includes the Oslo and Skagerrak grabens areas in south western Sweden Scotland northern England and the central North Sea The SCLIP erupted at 297 4 Ma 3 It produced 228 000 km of currently exposed volcanic material that can be found in Skagerrak the Oslo Fjord central North Sea North east Germany 14 000 km of sills in Scotland England Germany The Netherlands and Sweden and 3 353 km total length of dykes in Scotland Norway and Sweden 4 The period of eruptions comprised a relatively short time span perhaps less than 4 Ma but magma propagated more than 1 000 km 620 mi from the plume centre 5 Plumes derived from a superplume or Large Low Shear Velocity Province LLSVP overlay the boundary of the superplume at the core mantle boundary CMB 6 To test whether the SCLIP met these criteria Torsvik et al used a shear wave tomographic model of the mantle in which the SCLIP indeed do project down to the margin of the African superplume at the CMB at a depth of 2800 km 2 A series of LIPs are associated with the African superplume of which the SCLIP is the oldest SCLIP 300 Ma Bachu 275 Ma Emeishan 260 Ma Siberian 250 Ma and Central Atlantic 200 Ma Its possible that these plumes together caused the break up of Pangaea and therefore play an important role in the supercontinent cycle 7 The SCLIP is associated with the Moscovian and Kasimovian stages of the Carboniferous rainforest collapse around 296 310 Ma together with the Siberian Barguzin Vitim LIP 8 See also editAvalonia List of flood basalt provinces Central Atlantic magmatic province Late Triassic to Early Jurassic igneous province in the area Central Skane Volcanic Province Early Jurassic to Early Cretaceous igneous province in southern SwedenReferences edit E g Doblas et al 1998 Abstract Bryan amp Ferrari 2013 Fig 1 p 1054 a b Torsvik et al 2008 Relationship of the Skagerrak LIP eruption site to the deep mantle pp 447 448 Torsvik et al 2008 The Skagerrak Centered Large Igneous Province pp 444 445 Torsvik et al 2008 Fig 1 p 445 Torsvik et al 2008 Conclusions p 451 Torsvik et al 2008 Was the SCLIP generated by a mantle plume pp 445 446 Li amp Zhong 2009 Superplume record during the Pangean cycle pp 146 147 Kravchinsky 2012 Table 1 p 33 Bibliography edit Bryan S E Ferrari L 2013 Large igneous provinces and silicic large igneous provinces Progress in our understanding over the last 25 years Geological Society of America Bulletin 125 7 8 1053 1078 Bibcode 2013GSAB 125 1053B doi 10 1130 B30820 1 Retrieved 3 April 2016 Doblas M Oyarzun R Lopez Ruiz J Cebria J M Youbi N Mahecha V Lago M Pocovi A Cabanis B 1998 Permo Carboniferous volcanism in Europe and northwest Africa a superplume exhaust valve in the centre of Pangaea Journal of African Earth Sciences 26 1 89 99 Bibcode 1998JAfES 26 89D doi 10 1016 S0899 5362 97 00138 3 Retrieved 3 April 2016 Kravchinsky V A 2012 Paleozoic large igneous provinces of Northern Eurasia Correlation with mass extinction events Global and Planetary Change 86 87 31 36 Bibcode 2012GPC 86 31K doi 10 1016 j gloplacha 2012 01 007 Retrieved 3 April 2016 Li Z X Zhong S 2009 Supercontinent superplume coupling true polar wander and plume mobility plate dominance in whole mantle tectonics PDF Physics of the Earth and Planetary Interiors 176 3 143 156 Bibcode 2009PEPI 176 143L doi 10 1016 j pepi 2009 05 004 Retrieved 3 April 2016 Torsvik T H Smethurst M A Burke K Steinberger B 2008 Long term stability in deep mantle structure Evidence from the 300 Ma Skagerrak Centered Large Igneous Province the SCLIP PDF Earth and Planetary Science Letters 267 3 444 452 Bibcode 2008E amp PSL 267 444T doi 10 1016 j epsl 2007 12 004 Retrieved 3 April 2016 Retrieved from https en wikipedia org w index php title Skagerrak Centered Large Igneous Province amp oldid 1115440607, wikipedia, wiki, book, books, library,

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