CoChat
Sign Up
Cited by 52Geological and Geochemical AnalysisGeochemistry and Elemental AnalysisPaleontology and Stratigraphy of Fossils

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Geochemical Constraints Provided by the Freetown Layered Complex (Sierra Leone) on the Origin of High-Ti Tholeiitic CAMP Magmas

Open access
Callegaro, Sara, Marzoli, Andrea, Bertrand, Hervé, Blichert-Toft, Janne, Reisberg, Laurie, Cavazzini, Giancarlo, Jourdan, Fred, Davies, Joshua H F L, Parisio, Laura, Bouchet, Romain, Paul, Andre, Schaltegger, Urs, Chiaradia, Massimo·2017·Journal of Petrology
DOI 10.1093/petrology/egx073
Open this paper in CoChat — free account

Abstract

The Freetown Layered Complex (FLC) is a massive mafic layered intrusion cropping out along the coast of Sierra Leone. The present combined geochemical and geochronological (40Ar/39Ar on plagioclase: 201.7 6 0.7 and 202.3 6 2.3 Ma; U-Pb on baddeleyite: 198.794 ± 0.048/0.071/0.22 Ma) study of the complex flags it as a high-Ti occurrence of the Central Atlantic Magmatic Province (CAMP). Sr-Nd-Pb-Os isotope data indicate that the FLC is unique with respect to previously studied CAMP occurrences, constituting a new isotopic end-member for this large igneous province (LIP). Notably, the contribution of ancient source(s) is required to explain its low 206Pb/204Pb and high 207Pb/204Pb. Although the internal isotopic variability of the FLC can be explained by modest assimilation (<10%) of lower crustal (granulitic) material, represented by a xenolith found within the complex itself, an atypical mantle source is required to account for its unusual Pb isotopic composition. We also present the first Hf isotopic data measured to date for CAMP rocks, which, in the case of the FLC, show a restricted range in 176Hf/177Hf, overlapping the ocean island basalt and mid-ocean ridge basalt fields on the terrestrial array, and can further be used to characterize the FLC isotopic end-member. We propose that the FLC formed by mixing of a predominantly asthenospheric parental magma with small volumes (1-3%) of geochemically highly enriched lamproitic melts derived from the sub-continental lithospheric mantle in a geodynamic context in which a Proterozoic mobile belt (Rokelide) bordered an Archean craton (Man). Within the CAMP, similar isotopic compositions, in particular low 206Pb/204Pb and high 207Pb/204Pb, are found only in regions that were once contiguous with Sierra Leone. A comparable involvement of enriched components stored within the cratonic lithosphere may be envisaged for the high-Ti magmatism in the CAMP and two other LIPs of the South Atlantic realm, Karoo and Paraná-Etendeka. These Gondwana magmatic provinces share with other mantle-derived magmas from the South Atlantic Ocean enriched isotopic signatures (DUPAL, LOMU, EMI) of much debated origin. The present mantle source model for the FLC, CAMP, and neighbouring LIPs suggests ancient enriched subcontinental lithospheric mantle as a plausible conveyor of such isotopic signatures in the South and Central Atlantic.

Overview

Integrity signals

Registry

Crossref · 10.1093/petrology/egx073

Cites

1 of 1 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Verification

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Bedrock geology across the Freetown Peninsula is dominated by the Freetown Layered Complex, a 65 km long, 14 km wide, 7 km thick tholeiitic intrusion that intruded the West African Craton during the Early Jurassic about 200 Ma.

    “Bedrock geology across the Freetown Peninsula is dominated by the Freetown Layered Complex, a 65 km long, 14 km wide, 7 km thick tholeiitic intrusion which intruded the West African Craton during the Early Jurassic ~200 Ma (Callegaro et al 2017; Chalokwu et al. 1995; Chalokwu, 2001).”

    From The 2017 Regent Landslide, Freetown Peninsula, Sierra Leone (2019) · cites this paper as Callegaro et al 2017

Citations

Cites

Flagged first, then by citations

Research works printed but not linked: 141

  1. Abouchami, 1990, A major 2·1 Ga event of mafic magmatism in west Africa: An early stage of crustal accretion, Journal of Geophysical Research, 95, 17605, 10.1029/JB095iB11p17605 · DOI
  2. Beckinsale, 1977, Rubidium/strontium age studies and geochemistry of acid veins in the Freetown complex, Sierra Leone, Mineralogical Magazine, 41, 501, 10.1180/minmag.1977.041.320.12 · DOI
  3. Bédard, 2014, Parameterizations of calcic clinopyroxene–melt trace element partition coefficients, Geochemistry, Geophysics, Geosystems, 15, 303, 10.1002/2013GC005112 · DOI
  4. Ben Othman, 1984, Nd–Sr isotopic composition of granulites and constraints on the evolution of the lower continental crust, Nature, 307, 510, 10.1038/307510a0 · DOI
  5. Bergman, 1987, Lamproites and other potassium-rich igneous rocks; a review of their occurrence, mineralogy and geochemistry. In: Fitton, J. G. & Upton, B. G. J. (eds) Alkaline Igneous Rocks., Geological Society, London, Special Publications, 30, 103, 10.1144/GSL.SP.1987.030.01.08 · DOI
  6. Bertrand, 1982, Geochemistry of Early Mesozoic tholeiites from Morocco, Earth and Planetary Science Letters, 58, 225, 10.1016/0012-821X(82)90196-0 · DOI
  7. Bizzi, 1995, Heterogeneous enriched mantle materials and Dupal-type magmatism along the SW margin of the São Francisco craton, Brazil, Journal of Geodynamics, 20, 469, 10.1016/0264-3707(95)00028-8 · DOI
  8. Black, 2017, Volatiles and the tempo of flood basalt magmatism, Earth and Planetary Science Letters, 458, 130, 10.1016/j.epsl.2016.09.035 · DOI
  9. Blackburn, 2013, Zircon U–Pb geochronology links the end-Triassic extinction with the Central Atlantic Magmatic Province, Science, 340, 941, 10.1126/science.1234204 · DOI
  10. Blichert-Toft, 1997, The Lu–Hf isotope geochemistry of chondrites and the evolution of the mantle–crust system, Earth and Planetary Science Letters, 148, 243, 10.1016/S0012-821X(97)00040-X · DOI
  11. Boher, 1992, Crustal growth in West Africa at 2·1 Ga, Journal of Geophysical Research, 97, 345, 10.1029/91JB01640 · DOI
  12. Brenan, 2016, Highly Siderophile and Strongly Chalcophile Elements in High-temperature Geochemistry and Cosmochemistry. Mineralogical Society of America and Geochemical Society, Reviews in Mineralogy and Geochemistry, 1
  13. Briden, 1971, Palaeomagnetic and radiometric evidence for the age of the Freetown igneous complex, Sierra Leone, Earth and Planetary Science Letters, 12, 385, 10.1016/0012-821X(71)90022-7 · DOI
  14. Burke, 2003, New way to map old sutures using deformed alkaline rocks and carbonatites, Geology, 31, 391, 10.1130/0091-7613(2003)031<0391:NWTMOS>2.0.CO;2 · DOI
  15. Burke, 2008, Plume generation zones at the margins of Large Low Shear Velocity Provinces on the core–mantle boundary, Earth and Planetary Science Letters, 265, 49, 10.1016/j.epsl.2007.09.042 · DOI
  16. Callegaro, 2013, Upper and lower crust recycling in the source of CAMP basaltic dykes from southeastern North America, Earth and Planetary Science Letters, 376, 186, 10.1016/j.epsl.2013.06.023 · DOI
  17. Callegaro, 2014, Enriched mantle source for the Central Atlantic magmatic province: New supporting evidence from southwestern Europe, Lithos, 188, 15, 10.1016/j.lithos.2013.10.021 · DOI
  18. Carlson, 1996, Chemical and Os isotopic study of Cretaceous potassic rocks from Southern Brazil, Contributions to Mineralogy and Petrology, 125, 393, 10.1007/s004100050230 · DOI
  19. Carlson, 2005, Physical, chemical, and chronological characteristics of continental mantle, Reviews of Geophysics, 43, RG1001, 10.1029/2004RG000156 · DOI
  20. Carlson, 2007, Chemical and isotopic relationships between peridotite xenoliths and mafic–ultrapotassic rocks from Southern Brazil, Chemical Geology, 242, 418, 10.1016/j.chemgeo.2007.04.009 · DOI
  21. Castillo, 1988, The Dupal anomaly as a trace of the upwelling lower mantle, Nature, 336, 667, 10.1038/336667a0 · DOI
  22. Chakraborty, 2010, Diffusion in Minerals and Melts. Mineralogical Society of America and Geochemical Society, Reviews in Mineralogy and Geochemistry, 603
  23. Chalapathi Rao, 2013, Re–Os isotope study of Indian kimberlites and lamproites: Implications for mantle source regions and cratonic evolution, Chemical Geology, 353, 36, 10.1016/j.chemgeo.2012.12.013 · DOI
  24. Chalokwu, 2001, Petrology of the Freetown layered complex, Sierra Leone: part II. Magma evolution and crystallisation conditions, Journal of African Earth Science, 32, 519, 10.1016/S0899-5362(01)90112-5 · DOI · Paper page
  25. Chalokwu, 1995, Petrology of the Freetown layered complex of Sierra Leone: Part I. Stratigraphy and mineral-chemical evidence for multiple magma injection, International Geology Review, 37, 230, 10.1080/00206819509465402 · DOI · Paper page
  26. Chalokwu, 1999, Oxygen isotopic systematics of an open-system magma chamber: an example from the Freetown Layered Complex of Sierra Leone, Geochimica et Cosmochimica Acta, 63, 675, 10.1016/S0016-7037(99)00098-8 · DOI
  27. Chauvel, 2008, Role of recycled oceanic basalt and sediment in generating the Hf–Nd mantle array, Nature Geoscience, 1, 64, 10.1038/ngeo.2007.51 · DOI
  28. Cherniak, 2010, Diffusion in accessory minerals: zircon, titanite, apatite, monazite and xenotime. In: Zhang, Y. & Cherniak, D. J. (eds) Diffusion in Minerals and Melts., Mineralogical Society of America and Geochemical Society, Reviews in Mineralogy and Geochemistry, 72, 827, 10.2138/rmg.2010.72.18 · DOI
  29. Choukroun, 2005, Hf isotopes of MARID (mica–amphibole–rutile–ilmenite–diopside) rutile trace metasomatic processes in the lithospheric mantle, Geology, 33, 45, 10.1130/G21084.1 · DOI
  30. Class, 2011, South Atlantic DUPAL anomaly—Dynamic and compositional evidence against a recent shallow origin, Earth and Planetary Science Letters, 305, 92, 10.1016/j.epsl.2011.02.036 · DOI
  31. Cochrane, 2014, High temperature (>350 °C) thermochronology and mechanisms of Pb loss in apatite, Geochimica et Cosmochimica Acta, 127, 39, 10.1016/j.gca.2013.11.028 · DOI
  32. Cohen, 1984, Isotope geochemistry of xenoliths from East Africa: implications for development of mantle reservoirs and their interaction, Earth and Planetary Science Letters, 68, 209, 10.1016/0012-821X(84)90153-5 · DOI
  33. Coleman, 2009, Rethinking the emplacement and evolution of zoned plutons: Geochronologic evidence for incremental assembly of the Tuolumne Intrusive Suite, California, Geology, 32, 433, 10.1130/G20220.1 · DOI
  34. Coltorti, 2010, Buoyant ancient continental mantle embedded in oceanic lithosphere (Sal Island, Cape Verde Archipelago), Lithos, 120, 223, 10.1016/j.lithos.2009.11.005 · DOI
  35. Comin-Chiaramonti, 1997, Potassic and sodic igneous rocks from Eastern Paraguay: their origin from the lithospheric mantle and genetic relationships with the associated Paraná flood tholeiites, Journal of Petrology, 38, 495, 10.1093/petroj/38.4.495 · DOI
  36. Comin-Chiaramonti, 2007, Origin of post Paleozoic magmatism in Eastern Paraguay, Plates, Plumes, and Planetary Processes, The Geological Society of America Special Paper 430, 603, 10.1130/2007.2430(29) · DOI
  37. Costa, 2004, Decadal time gaps between mafic intrusion and silicic eruption obtained from chemical zoning patterns in olivine, Earth and Planetary Science Letters, 227, 517, 10.1016/j.epsl.2004.08.011 · DOI
  38. Costa, 2003, Diffusion coupling between trace and major elements and a model for calculation of magma residence times using plagioclase, Geochimica et Cosmochimica Acta, 67, 2189, 10.1016/S0016-7037(02)01345-5 · DOI
  39. Dale, 2009, Osmium isotopes in Baffin Island and West Greenland picrites: Implications for the 187Os/188Os composition of the convecting mantle and the nature of high 3He/4He mantle, Earth and Planetary Science Letters, 278, 267, 10.1016/j.epsl.2008.12.014 · DOI
  40. Davies, 2017, End-Triassic mass extinction started by intrusive CAMP activity, Nature Communications, 8, 1, 10.1038/ncomms15596 · DOI
  41. Deckart, 1997, Age of Jurassic continental tholeiites of French Guyana, Surinam and Guinea: implications for the initial opening of the Central Atlantic Ocean, Earth and Planetary Science Letters, 150, 205, 10.1016/S0012-821X(97)00102-7 · DOI
  42. Deckart, 2005, Geochemistry and Sr, Nd, Pb isotopic composition of the Central Atlantic Magmatic Province (CAMP) in Guyana and Guinea, Lithos, 82, 289, 10.1016/j.lithos.2004.09.023 · DOI
  43. De Min, 2003, The Central Atlantic Magmatic Province: Insights from Fragments of Pangea. American Geophysical Union, Geophysical Monographs, 209
  44. De Paolo, 1981, Trace element and isotopic effects of combined wall-rock assimilation and fractional crystallization, Earth and Planetary Science Letters, 53, 189, 10.1016/0012-821X(81)90153-9 · DOI
  45. Douglass, 1999, Plume–ridge interactions of the Discovery and Shona mantle plumes with the southern Mid-Atlantic Ridge (40°–55°S), Journal of Geophysical Research, 104, 2941, 10.1029/98JB02642 · DOI
  46. Dunning, 1990, U/Pb zircon and baddeleyite ages for the Palisades and Gettysburg sills of the northeastern United States: Implications for the age of the Triassic/Jurassic boundary, Geology, 18, 795, 10.1130/0091-7613(1990)018<0795:UPZABA>2.3.CO;2 · DOI · Paper page
  47. Dupré, 1983, Pb–Sr isotope variation in Indian Ocean basalts and mixing phenomena, Nature, 303, 142, 10.1038/303142a0 · DOI
  48. Dupuy, 1988, Asthenospheric and lithospheric sources for Mesozoic dolerites from Liberia (Africa): trace element and isotopic evidence, Earth and Planetary Science Letters, 87, 100, 10.1016/0012-821X(88)90067-2 · DOI
  49. Ellam, 1991, An interpretation of Karoo picrite basalts in terms of interaction between asthenospheric magmas and the mantle lithosphere, Earth and Planetary Science Letters, 105, 330, 10.1016/0012-821X(91)90141-4 · DOI
  50. Escrig, 2004, Osmium isotopic constraints on the nature of the DUPAL anomaly from Indian mid-ocean-ridge basalts, Nature, 431, 59, 10.1038/nature02904 · DOI
  51. Escrig, 2005, Os isotope systematics in Fogo Island: evidence for lower continental crust fragments under the Cape Verde Southern Islands, Chemical Geology, 219, 93, 10.1016/j.chemgeo.2005.02.011 · DOI
  52. Fraser, 1985, Sr, Nd and Pb isotope and minor element geochemistry of lamproites and kimberlites, Earth and Planetary Science Letters, 76, 57, 10.1016/0012-821X(85)90148-7 · DOI
  53. Gao, 2008, Recycling deep cratonic lithosphere and generation of intraplate magmatism in the North China Craton, 41
  54. Gibson, 1995, High-Ti and low-Ti mafic potassic magmas: Key to plume–lithosphere interactions and continental flood-basalt genesis, Earth and Planetary Science Letters, 136, 149, 10.1016/0012-821X(95)00179-G · DOI
  55. Gibson, 2005, Melt-generation processes associated with the Tristan mantle plume: Constraints on the origin of EM-1, Earth and Planetary Science Letters, 237, 744, 10.1016/j.epsl.2005.06.015 · DOI
  56. Goldstein, 2008, Origin of a ‘Southern Hemisphere’ geochemical signature in the Arctic upper mantle, Nature, 453, 89, 10.1038/nature06919 · DOI
  57. Griffin, 2000, The Hf isotope composition of cratonic mantle: LAM-MC-ICPMS analysis of zircon megacrysts in kimberlites, Geochimica et Cosmochimica Acta, 64, 133, 10.1016/S0016-7037(99)00343-9 · DOI
  58. Hanan, 1996, Lead and helium isotope evidence from oceanic basalts for a common deep source of mantle plumes, Science, 272, 991, 10.1126/science.272.5264.991 · DOI
  59. Hanan, 2004, Contrasting origins of the upper mantle revealed by hafnium and lead isotopes from the Southeast Indian Ridge, Nature, 432, 91, 10.1038/nature03026 · DOI
  60. Hargraves, 1999, Palaeomagnetism and magnetic fabric in the Freetown Complex, Sierra Leone, Geophysical Journal International, 136, 705, 10.1046/j.1365-246x.1999.00760.x · DOI
  61. Hart, 1984, A large-scale isotope anomaly in the Southern Hemisphere mantle, Nature, 309, 753, 10.1038/309753a0 · DOI
  62. Hart, 1992, Mantle plumes and entrainment—Isotopic evidence, Science, 256, 517, 10.1126/science.256.5056.517 · DOI
  63. Hattori, 1991, Osmium isotope ratios of PGM grains associated with the Freetown Layered Complex, Sierra Leone, and their origin, Contributions to Mineralogy and Geochemistry, 109, 10, 10.1007/BF00687197 · DOI
  64. Heinonen, 2016, Enriched continental flood basalts from depleted mantle melts: modeling the lithospheric contamination of Karoo lavas from Antarctica, Contributions to Mineralogy and Petrology, 171, 1, 10.1007/s00410-015-1214-8 · DOI
  65. Hofmann, 2003, Treatise on Geochemistry—The Mantle and the Core, 61
  66. Jacobsen, 1980, Sm-Nd isotopic evolution of chondrites, Earth and Planetary Science Letters, 50, 139, 10.1016/0012-821X(80)90125-9 · DOI
  67. Jennings, 2017, Deep mixing of mantle melts beneath continental flood basalt provinces: Constraints from olivine-hosted melt inclusions in primitive magmas, Geochimica et Cosmochimica Acta, 196, 36, 10.1016/j.gca.2016.09.015 · DOI
  68. Jourdan, 2006, Basement control on dyke distribution in Large Igneous Provinces: Case study of the Karoo triple junction, Earth and Planetary Science Letters, 241, 307, 10.1016/j.epsl.2005.10.003 · DOI
  69. Jourdan, 2007, Major and trace element and Sr, Nd, Hf, and Pb isotope compositions of the Karoo large igneous province, Botswana–Zimbabwe: lithosphere vs mantle plume contribution, Journal of Petrology, 48, 1043, 10.1093/petrology/egm010 · DOI
  70. Kamenetsky, 2001, Remnants of Gondwanan continental lithosphere in oceanic upper mantle: Evidence from the South Atlantic Ridge, Geology, 29, 243, 10.1130/0091-7613(2001)029<0243:ROGCLI>2.0.CO;2 · DOI · Paper page
  71. Kaminsky, 2004, Neoproterozoic ‘anomalous’ kimberlites of Guaniamo, Venezuela: mica kimberlites of ‘isotopic transitional’ type, Lithos, 76, 565, 10.1016/j.lithos.2004.03.035 · DOI
  72. Kononova, 2011, Kimberlites and lamproites: criteria for similarity and differences, Petrology, 19, 35, 10.1134/S0869591111010024 · DOI
  73. Korenaga, 2004, Mantle mixing and continental breakup magmatism, Earth and Planetary Science Letters, 218, 463, 10.1016/S0012-821X(03)00674-5 · DOI
  74. Krause, 1963, Seaward extension and origin of the Freetown layered basic complex of Sierra Leone, Nature, 200, 1280, 10.1038/2001280a0 · DOI
  75. Le Roex, 1998, Isotope and trace element geochemistry of Cretaceous Damaraland lamprophyres and carbonatites, northwestern Namibia: evidence for plume—lithosphere interactions, Journal of Petrology, 39, 1117, 10.1093/petroj/39.6.1117 · DOI
  76. Liew, 1991, Isotopic contrasts, chronology of elemental transfers and high-grade metamorphism: the Sri Lanka Highland granulites, and the Lewisian (Scotland) and Nuk (SW Greenland) gneisses, Geologische Rundschau, 80, 279, 10.1007/BF01829366 · DOI
  77. Lustrino, 2005, How the delamination and detachment of lower crust can influence basaltic magmatism, Earth-Science Reviews, 72, 21, 10.1016/j.earscirev.2005.03.004 · DOI
  78. Lytwyn, 2006, The nature and location of the suture zone in the Rokelide orogen, Sierra Leone: Geochemical evidence, Journal of African Earth Sciences, 46, 439, 10.1016/j.jafrearsci.2006.08.004 · DOI
  79. Marzoli, 1999, Extensive 200-million-year-old continental flood basalts of the Central Atlantic Magmatic Province, Science, 284, 616, 10.1126/science.284.5414.616 · DOI
  80. Marzoli, 2011, Timing and duration of the Central Atlantic magmatic province in the Newark and Culpeper basins, eastern U.S.A, Lithos, 122, 175, 10.1016/j.lithos.2010.12.013 · DOI
  81. Marzoli, 2014, Petrogenesis of tholeiitic basalts from the Central Atlantic magmatic province as revealed by mineral major and trace elements and Sr isotopes, Lithos, 188, 44, 10.1016/j.lithos.2013.09.013 · DOI
  82. Mauche, 1989, Anomalous isotopic compositions of Sr, Ar, and O in the Mesozoic diabase dikes of Liberia, West Africa, Contributions to Mineralogy and Petrology, 101, 12, 10.1007/BF00387197 · DOI
  83. McDonough, 1995, The composition of the Earth, Chemical Geology, 120, 223, 10.1016/0009-2541(94)00140-4 · DOI
  84. Meisel, 2001, Osmium isotopic compositions of mantle xenoliths: A global perspective, Geochimica et Cosmochimica Acta, 65, 1311, 10.1016/S0016-7037(00)00566-4 · DOI
  85. Merle, 2011, 40Ar/39Ar ages and Sr–Nd–Pb–Os geochemistry of CAMP tholeiites from Western Maranhão basin (NE Brazil), Lithos, 122, 137, 10.1016/j.lithos.2010.12.010 · DOI
  86. Merle, 2014, Sr, Nd, Pb and Os isotope systematics of CAMP tholeiites from Eastern North America (ENA): evidence of a subduction-enriched mantle source, Journal of Petrology, 55, 133, 10.1093/petrology/egt063 · DOI
  87. Meyers, 2012, Intercalibration of radioisotopic and astrochronologic time scales for the Cenomanian–Turonian boundary interval, Western Interior Basin, USA, Geology, 40, 7, 10.1130/G32261.1 · DOI
  88. Meyzen, 2005, New insights into the origin and distribution of the DUPAL isotope anomaly in the Indian Ocean mantle from MORB of the Southwest Indian Ridge, Geochemistry, Geophysics, Geosystems, 6, Q11K11, 10.1029/2005GC000979 · DOI
  89. Meyzen, 2007, Isotopic portrayal of the Earth’s upper mantle flow field, Nature, 447, 1069, 10.1038/nature05920 · DOI
  90. Mgbatogu, 1988, An offshore geophysical survey of the Freetown igneous complex, Sierra Leone, Tectonophysics, 148, 105, 10.1016/0040-1951(88)90164-3 · DOI
  91. Mirnejad, 2006, Origin and source evolution of the Leucite Hills lamproites: Evidence from Sr–Nd–Pb–O isotopic compositions, Journal of Petrology, 47, 2463, 10.1093/petrology/egl051 · DOI
  92. Mitchell, 1991, Petrology of Lamproites., 447, 10.1007/978-1-4615-3788-5 · DOI
  93. Murphy, 2002, Lamproites from Gaussberg, Antarctica: possible Transition Zone melts of Archaean subducted sediments, Journal of Petrology, 43, 981, 10.1093/petrology/43.6.981 · DOI
  94. Nelson, 1992, Isotopic characteristics of potassic rocks; evidence for the involvement of subducted sediments in magma genesis, Lithos, 28, 403, 10.1016/0024-4937(92)90016-R · DOI
  95. Nowell, 2003, Lu–Hf and Re–Os systematics of lamproites: constraints on their petrogenesis, Geophysical Research Abstracts, 5, 05458
  96. O’Brien, 1995, Strontium, neodymium, and lead isotopic evidence for the interaction of post-subduction asthenospheric potassic mafic magmas of the Highwood Mountains, Montana, USA, with ancient Wyoming craton lithospheric mantle, Geochimica et Cosmochimica Acta, 59, 4539, 10.1016/0016-7037(95)99266-J · DOI
  97. O’Reilly, 2009, Ultradeep continental roots and their oceanic remnants: A solution to the geochemical ‘mantle reservoir’ problem?, Lithos, 112, 1043, 10.1016/j.lithos.2009.04.028 · DOI
  98. Papike, 1974, Amphiboles and pyroxenes: characterization of other than quadrilateral components and estimates of ferric iron from microprobe data, Geological Society of America, Abstracts with Programs, 6, 1053
  99. Peate, 1999, Petrogenesis and stratigraphy of the high-Ti/Y Urubici magma type in the Parana Flood Basalt Province and implications for the nature of ‘Dupal’-type mantle in the South Atlantic region, Journal of Petrology, 40, 451, 10.1093/petroj/40.3.451 · DOI
  100. Pouclet, 2004, Découverte d’un diatrème de kimberlite diamantifère à Séguéla en Côte-d’Ivoire, Comptes Rendus: Géoscience, 336, 9, 10.1016/j.crte.2003.10.012 · DOI
  101. Prelević, 2010, Hf isotope compositions of Mediterranean lamproites: Mixing of melts from asthenosphere and crustally contaminated mantle lithosphere, Lithos, 119, 297, 10.1016/j.lithos.2010.07.007 · DOI
  102. Puffer, 2001, Contrasting high field strength element contents of continental flood basalts from plume versus reactivated-arc sources, Geology, 29, 675, 10.1130/0091-7613(2001)029<0675:CHFSEC>2.0.CO;2 · DOI · Paper page
  103. Puffer, 2003, The Central Atlantic Magmatic Province: Insights from Fragments of Pangea. American Geophysical Union, Geophysical Monographs, 151, 10.1029/136GM08 · DOI
  104. Puffer, 2009, Transmission of flood basalts through a shallow crustal sill and the correlations of the sill layers with extrusive flows: the Palisades intrusive system and the basalts of the Newark Basin, New Jersey, U.S.A, Journal of Geology, 117, 139, 10.1086/595663 · DOI
  105. Regelous, 2009, Shallow origin for South Atlantic Dupal Anomaly from lower continental crust: Geochemical evidence from the Mid-Atlantic Ridge at 26° S, Lithos, 112, 57, 10.1016/j.lithos.2008.10.012 · DOI
  106. Rekhämper, 1997, Recycled ocean crust and sediment in Indian Ocean MORB, Earth and Planetary Science Letters, 147, 93, 10.1016/S0012-821X(97)00009-5 · DOI
  107. Renne, 2010, Joint determination of 40K decay constants and 40Ar*/40K for the Fish Canyon sanidine standard, and improved accuracy for 40Ar/39Ar geochronology, Geochimica et Cosmochimica Acta, 74, 5349, 10.1016/j.gca.2010.06.017 · DOI
  108. Renne, 2011, Response to the comment by W. H. Schwarz et al. on ‘Joint determination of 40K decay constants and 40Ar*/40K for the Fish Canyon sanidine standard, and improved accuracy for 40Ar/39Ar geochronology’ by P. R. Renne et al. (2010), Geochimica et Cosmochimica Acta, 75, 5097, 10.1016/j.gca.2011.06.021 · DOI
  109. Renne, 2013, Time scales of critical events around the Cretaceous–Paleogene boundary, Science, 339, 684, 10.1126/science.1230492 · DOI
  110. Rioux, 2010, Characterizing the U–Pb systematics of baddeleyite through chemical abrasion: application of multi-step digestion methods to baddeleyite geochronology, Contributions to Mineralogy and Petrology, 160, 777, 10.1007/s00410-010-0507-1 · DOI
  111. Ripley, 2003, Sulfur isotopic studies of continental flood basalts in the Noril’sk region: Implications for the association between lavas and ore-bearing intrusions, Geochimica et Cosmochimica Acta, 67, 2805, 10.1016/S0016-7037(03)00102-9 · DOI
  112. Rocha-Júnior, 2012, Re–Os isotope and highly siderophile element systematics of the Paraná continental flood basalts (Brazil), Earth and Planetary Science Letters, 337–338, 164, 10.1016/j.epsl.2012.04.050 · DOI
  113. Rocha-Júnior, 2013, Sr–Nd–Pb isotopic constraints on the nature of the mantle sources involved in the genesis of the high-Ti tholeiites from northern Paraná Continental Flood Basalts (Brazil), Journal of South American Earth Sciences, 46, 9, 10.1016/j.jsames.2013.04.004 · DOI
  114. Roeder, 1970, Olivine–liquid equilibrium, Contributions to Mineralogy and Petrology, 29, 275, 10.1007/BF00371276 · DOI
  115. Rotenberg, 2012, Determination of the decay-constant of 87Rb by laboratory accumulation of 87Sr, Geochimica and Cosmochimica Acta, 85, 41, 10.1016/j.gca.2012.01.016 · DOI
  116. Ruiz-Martínez, 2012, Earth at 200 Ma: Global palaeogeography refined from CAMP palaeomagnetic data, Earth and Planetary Science Letters, 331–332, 67, 10.1016/j.epsl.2012.03.008 · DOI
  117. Saal, 1998, Re–Os isotope evidence for the composition, formation and age of the lower continental crust, Nature, 393, 58, 10.1038/29966 · DOI
  118. Salters, 2010, An ancient metasomatic source for the Walvis Ridge basalts, Chemical Geology, 273, 151, 10.1016/j.chemgeo.2010.02.010 · DOI
  119. Salters, 2003, The Central Atlantic Magmatic Province: Insights from Fragments of Pangea. American Geophysical Union, Geophysical Monographs, 163, 10.1029/136GM09 · DOI
  120. Schoene, 2010, Correlating the end-Triassic mass extinction and flood basalt volcanism at the 100 ka level, Geology, 38, 387, 10.1130/G30683.1 · DOI
  121. Schwindrofska, 2016, Origin of enriched components in the South Atlantic: Evidence from 40 Ma geochemical zonation of the Discovery Seamounts, Earth and Planetary Science Letters, 441, 167, 10.1016/j.epsl.2016.02.041 · DOI
  122. Shirey, 1998, The Re-Os isotope system in cosmochemistry and high-temperature geochemistry, Annual Reviews in Earth and Planetary Science, 26, 423, 10.1146/annurev.earth.26.1.423 · DOI
  123. Skinner, 2004, Kimberlites of the Man craton, West Africa, Lithos, 76, 233, 10.1016/j.lithos.2004.04.034 · DOI
  124. Smith, 2010, Eocene clocks agree: coeval 40Ar/39Ar, U–Pb and astronomical ages from the Green River Formation, Geology, 38, 527, 10.1130/G30630.1 · DOI
  125. Stracke, 2005, FOZO, HIMU, and the rest of the mantle zoo, Geochemistry, Geophysics, Geosystems, 6, Q05007, 10.1029/2004GC000824 · DOI
  126. Sun, 1989, Magmatism in the Ocean Basins., 313
  127. Svensen, 2017, Large Igneous Provinces from Gondwana and Adjacent Regions. Geological Society, London, Special Publications
  128. Taylor, 1994, Comparative geochemistry of West African kimberlites: evidence for a micaceous end member of sublithospheric origin, Geochimica et Cosmochimica Acta, 58, 4011, 10.1016/0016-7037(94)90264-X · DOI
  129. Tegner, 2005, Crustal contamination in basalt and jotunite: constraints from layered intrusions, Lithos, 83, 299, 10.1016/j.lithos.2005.03.007 · DOI
  130. Torsvik, 2010, Diamonds sampled by plumes from the core–mantle boundary, Nature, 466, 352, 10.1038/nature09216 · DOI
  131. Umeji, 1983, Geochemistry and mineralogy of the Freetown layered basic igneous complex of Sierra Leone, Chemical Geology, 39, 17, 10.1016/0009-2541(83)90070-0 · DOI · Paper page
  132. Verati, 2005, The farthest record of the Central Atlantic Magmatic Province into West Africa craton: Precise 40Ar/39Ar dating and geochemistry of Taoudenni basin intrusives (northern Mali), Earth and Planetary Science Letters, 235, 391, 10.1016/j.epsl.2005.04.012 · DOI
  133. Vervoort, 1999, Relationships between Lu–Hf and Sm–Nd isotopic systems in the global sedimentary system, Earth and Planetary Science Letters, 168, 79, 10.1016/S0012-821X(99)00047-3 · DOI
  134. Wells, 1962, Structure and petrology of the Freetown layered basic complex of Sierra Leone, Overseas Mineralogical Resarch Bulletin Supplement, 4, 1
  135. Wen, 2006, A compositional anomaly at the Earth’s core–mantle boundary as an anchor to the relatively slowly moving surface hotspots and as source to the DUPAL anomaly, Earth and Planetary Science Letters, 246, 138, 10.1016/j.epsl.2006.04.024 · DOI
  136. Whalen, 2015, Supercontinental inheritance and its influence on supercontinental breakup: The Central Atlantic Magmatic Province and the breakup of Pangea, Geochemistry, Geophysics, Geosystems, 16, 3532, 10.1002/2015GC005885 · DOI
  137. Workman, 2005, Major and trace element composition of the depleted MORB mantle (DMM), Earth and Planetary Science Letters, 231, 53, 10.1016/j.epsl.2004.12.005 · DOI
  138. Wotzlaw, 2012, Zircon records crystallization, hydrothermal alteration and remelting in the Skaergaard intrusive complex, Earth and Planetary Science Letters, 355–356, 199, 10.1016/j.epsl.2012.08.043 · DOI
  139. Ying, 2010, Lower crustal xenoliths from Junan, Shandong province and their bearing on the nature of the lower crust beneath the North China Craton, Lithos, 119, 363, 10.1016/j.lithos.2010.07.015 · DOI
  140. Zeh, 2015, The Bushveld Complex was emplaced and cooled in less than one million years—results from zirconology and tectonic implications, Earth and Planetary Science Letters, 418, 103, 10.1016/j.epsl.2015.02.035 · DOI
  141. Zindler, 1986, Chemical geodynamics, Annual Review of Earth and Planetary Sciences, 14, 493, 10.1146/annurev.ea.14.050186.002425 · DOI

Cited by

Sorted by citations

Metadata

Authors
Callegaro, S., Marzoli, A., Bertrand, H., Blichert-Toft, J., Reisberg, L., Cavazzini, G., Jourdan, F., Davies, J. H. F. L., Parisio, L., Bouchet, R., Paul, A., Schaltegger, U., & Chiaradia, M.
Affiliations
  • University of Padua (IT)
  • Lyon 1 Université (FR)
  • Centre National de la Recherche Scientifique (FR)
  • Institute of Geosciences and Earth Resources (IT)
  • Curtin University (AU)
  • University of Geneva (CH)
ORCID
Venue
Journal of Petrology
Publisher
Oxford University Press (OUP)
Published
2017-09-01
Volume
58
Issue
9
Pages
1811-1840
ISSN
  • 0022-3530 (ISSN-L)
  • 1460-2415
DOI
10.1093/petrology/egx073
OpenAlex
W2770339607
Cited by
52
References
1
Citations by year
2026: 4 · 2025: 2 · 2024: 3 · 2023: 7 · 2022: 5 · 2021: 11 · 2020: 9 · 2019: 4 · 2018: 5 · 2017: 2
FWCI
3.90
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Journal of Petrology (publishedVersion)
  • HAL (submittedVersion)
  • Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (submittedVersion)
  • eSpace (Curtin University) (submittedVersion)
  • NORA - Norwegian Open Research Archives (submittedVersion, other-oa)
  • Padua Research Archive (University of Padova) (submittedVersion)
Funders
Agence Nationale de la Recherche (ANR-10-BLAN-0603)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geological and Geochemical Analysis
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
Keywords
magma genesis, geochemical constraints, alkaline magmatism, Sierra Leone

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review