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LIU Yuhao, ZHANG Guoliang, ZHANG Ji, WANG Shuai. Geochemical constraints on CO2-rich mantle source for the Kocebu Seamount, Magellan Seamount chain in the western Pacific[J]. Journal of Oceanology and Limnology, 2020, 38(4): 1201-1214 |
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Geochemical constraints on CO2-rich mantle source for the Kocebu Seamount, Magellan Seamount chain in the western Pacific |
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| LIU Yuhao1,3, ZHANG Guoliang1,2,4, ZHANG Ji1,3, WANG Shuai1,3 |
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1 Center of Deep Sea Research & Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;
2 Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266000, China;
3 University of Chinese Academy of Sciences, Beijing 100049, China;
4 Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China |
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| Abstract: |
| The alkaline oceanic island basalts (OIBs) with under-saturated SiO2 and high contents of CaO and alkaline are usually attributed to mantle sources different from typical tholeiitic OIBs. Based on the results of high pressure and temperature experiment study, the genesis of silica under-saturated alkaline basaltic melts could be explained by the role of CO2, thus, the genetic relationship of alkaline basalts with CO2 has become a topic of relevance because it is closely related to the deep carbon cycle. The Magellan Seamount chain in the West Pacific Seamount Province has wide distribution of alkali basalts. For the first time, we collected alkaline basalt samples from the Kocebu Seamount of the Magellan Seamount chain and found that magmatic apatites widely occur in the less evolved volcanic rock samples, and the high contents of phosphorus should be a feature of the alkaline OIBs of the Magellan Seamounts. Compared with typical OIBs, these alkaline volcanic rocks have higher CaO and P2O5, lower SiO2 content, negative anomaly of high field strength elements (HFSEs), more distinctly negative anomaly of potassium (K) and the ubiquity of titanaugite, indicating a CO2-rich mantle source. Based on the relatively high K2O and TiO2 contents and La/Yb ratio and low MgO content of these alkaline rocks, we suggest that the volcanic rocks of the Magellan Seamounts are originated from carbonated eclogites derived possibly from ancient subducted altered oceanic crust. |
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| Key words:
alkaline oceanic island basalts (OIBs)|carbonatite|geochemistry|mantle source|Magellan Seamounts
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| Received: 2020-01-15 Revised: 2020-02-24 |
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References:
Beccaluva L, Barbieri M, Born H, Brotzu P, Coltorti M, Conte A, Garbarino C, G C B G, M A, Morbidelli L, Ruberti E, Siena F, Traversa G. 1992. Fractional crystallization and liquid immiscibility processes in the alkaline-carbonatite complex of Juquiá (São Paulo, Brazil). Journal of Petrology, 33(6): 1 371-1 404, https://doi.org/10.1093/petrology/33.6.1371.
Bu W R, Shi X F, Zhang M J, Liu J H, Glasby G P. 2007. He, Ne and Ar isotopic composition of Fe-Mn crusts from the western and central Pacific Ocean and implications for their genesis. Science in China Series D: Earth Sciences, 50(6): 857-868, https://doi.org/10.1007/s11430-007-0011-2.
Chazot G, Menzies M A, Harte B. 1996. Determination of partition coefficients between apatite, clinopyroxene, amphibole, and melt in natural spinel lherzolites from Yemen: implications for wet melting of the lithospheric mantle. Geochimica et Cosmochimica Acta, 60(3): 423-437, https://doi.org/10.1016/0016-7037(95)00412-2.
Coltorti M, Bonadiman C, Hinton R W, Siena F, Upton B G J. 1999. Carbonatite metasomatism of the oceanic upper mantle: evidence from clinopyroxenes and glasses in ultramafic xenoliths of Grande Comore, Indian Ocean.Journal of Petrology, 40(1): 133-165, https://doi.org/10.1093/petroj/40.1.133.
Dasgupta R, Hirschmann M M, Smith N D, 2007b. Water follows carbon: CO2 incites deep silicate melting and dehydration beneath mid-ocean ridges. Geology, 35(2):135-138, https://doi.org/10.1130/G22856A.1.
Dasgupta R, Hirschmann M M, Smith N D. 2007a. Partial melting experiments of peridotite + CO2 at 3 GPa and genesis of alkalic ocean island basalts. Journal of Petrology, 48(11): 2 093-2 124, https://doi.org/10.1093/petrology/egm053.
Dasgupta R, Hirschmann M M, Stalker K. 2006. Immiscible transition from carbonate-rich to silicate-rich melts in the 3 GPa melting interval of eclogite + CO2 and genesis of silica-undersaturated ocean island lavas. Journal of Petrology, 47(4): 647-671, https://doi.org/10.1093/petrology/egi088.
Gerbode C, Dasgupta R. 2010. Carbonate-fluxed melting of MORB-like pyroxenite at 2·9 GPa and genesis of HIMU Ocean Island Basalts. Journal of Petrology, 51(10):2 067-2 088, https://doi.org/10.1093/petrology/egq049.
Green D H, Wallace M E. 1988. Mantle metasomatism by ephemeral carbonatite melts. Nature, 336(6198): 459-462, https://doi.org/10.1038/336459a0.
Hammouda T, Moine B N, Devidal J L, Vincent C. 2009. Trace element partitioning during partial melting of carbonated eclogites. Physics of the Earth and Planetary Interiors, 174(1-4): 60-69, https://doi.org/10.1016/j.pepi.2008.06.009.
Hart R A. 1973. A model for chemical exchange in the basaltseawater system of oceanic layer Ⅱ. Canadian Journal of Earth Sciences, 10(6): 799-816, https://doi.org/10.1139/e73-074.
Hauri E H, Shimizu N, Dieu J J, Hart S R. 1993. Evidence for hotspot-related carbonatite metasomatism in the oceanic upper mantle. Nature, 365(6443): 221-227, https://doi.org/10.1038/365221a0.
Hirose K, Kushiro I. 1993. Partial melting of dry peridotites at high pressures: determination of compositions of melts segregated from peridotite using aggregates of diamond.Earth and Planetary Science Letters, 114(4): 477-489, https://doi.org/10.1016/0012-821X(93)90077-M.
Hirose K. 1997. Partial melt compositions of carbonated peridotite at 3 GPa and role of CO2 in alkali-basalt magma generation. Geophysical Research Letters, 24(22): 2 837-2 840, https://doi.org/10.1029/97GL02956.
Hoernle K, Tilton G, Le Bas M J, Duggen S, Garbe-Schönberg D. 2002. Geochemistry of oceanic carbonatites compared with continental carbonatites: mantle recycling of oceanic crustal carbonate. Contributions to Mineralogy and Petrology, 142(5): 520-542, https://doi.org/10.1007/s004100100308.
Hofmann A W, Jochum K P, Seufert M, White W M. 1986. Nb and Pb in oceanic basalts: new constraints on mantle evolution. Earth and Planetary Science Letters, 79(1-2):33-45, https://doi.org/10.1016/0012-821X(86)90038-5.
Ivanikov V V, Rukhlov A S, Bell K. 1998. Magmatic evolution of the melilitite-carbonatite-nephelinite dyke series of the Turiy Peninsula (Kandalaksha Bay, White Sea, Russia).Journal of Petrology, 39(11-12): 2 043-2 059, https://doi.org/10.1093/petroj/39.11-12.2043.
Kawamoto T, Holloway J R. 1997. Melting temperature and partial melt chemistry of H2O-saturated mantle peridotite to 11 gigapascals. Science, 276(5310): 240-243, https://doi.org/10.1126/science.276.5310.240.
Kiseeva E S, Yaxley G M, Hermann J, Litasov K D, Rosenthal A, Kamenetsky V S. 2012. An experimental study of carbonated eclogite at 3·5-5·5 GPa-implications for silicate and carbonate metasomatism in the cratonic mantle. Journal of Petrology, 53(4): 727-759, https://doi.org/10.1093/petrology/egr078.
Klemme S, van der Laan S R, Foley S F, Günther D. 1995.Experimentally determined trace and minor element partitioning between clinopyroxene and carbonatite melt under upper mantle conditions. Earth and Planetary Science Letters, 133(3-4): 439-448, https://doi.org/10.1016/0012-821X(95)00098-W.
Kogarko L, Kurat G, Ntaflos T. 2001. Carbonate metasomatism of the oceanic mantle beneath Fernando de Noronha Island, Brazil. Contributions to Mineralogy and Petrology, 140(5): 577-587, https://doi.org/10.1007/s004100000201.
Koppers A A P, Staudigel H, Pringle M S, Wijbrans J R. 2003.Short-lived and discontinuous intraplate volcanism in the South Pacific: hot spots or extensional volcanism? Geochemistry, Geophysics, Geosystems, 4(10): 1 089, https://doi.org/10.1029/2003GC000533.
Koppers A A P, Staudigel H, Wijbrans J R, Pringle M S. 1998.The Magellan seamount trail: implications for cretaceous hotspot volcanism and absolute Pacific Plate motion.Earth and Planetary Science Letters, 163(1-4): 53-68, https://doi.org/10.1016/S0012-821X(98)00175-7.
Le Maitre R W. 1984. A proposal by the IUGS subcommission on the systematics of igneous rocks for a chemical classification of volcanic rocks based on the total alkali silica (TAS) diagram. Australian Journal of Earth Sciences, 31(2): 243-255, https://doi.org/10.1080/08120098408729295.
Lee W J, Wyllie P J. 1998. Petrogenesis of carbonatite magmas from mantle to crust, constrained by the system CaO-(MgO+FeO*)-(Na2O+K2O)-(SiO2+Al2O3+TiO2)-CO2. Journal of Petrology, 39(3): 495-517, https://doi.org/10.1093/petroj/39.3.495.
Li D P. 2010. In-depth discussion of tectonic geological characteristics of the Pacific Ocean and the spatial and temporal distribution of seamounts. Science and Technology Innovation Herald, (25): 127-128, https://doi.org/10.3969/j.issn.1674-098X.2010.25.105. (in Chinese)
Liang D H, Zhu B D. 2002. The region geological bachground of cobalt-rich crust formation form the Magellanean Seamount chain. Geological Research of South China Sea, 14: 84-90. (in Chinese with English abstract)
McDonough W F, Sun S S. 1995. The composition of the earth.Chemical Geology, 120(3-4): 223-253, https://doi.org/10.1016/0009-2541(94)00140-4.
Müller R D, Sdrolias M, Gaina C, Roest W R. 2008. Age, spreading rates, and spreading asymmetry of the world’s ocean crust. Geochemistry, Geophysics, Geosystems, 9(4): Q04006, https://doi.org/10.1029/2007GC001743.
Neumann E R, Wulff-Pedersen E, Pearson N J, Spencer E A, 2002. Mantle xenoliths from Tenerife (Canary Islands):evidence for reactions between mantle peridotites and silicic carbonatite melts inducing Ca metasomatism.Journal of Petrology, 43(5): 825-857, https://doi.org/10.1093/petrology/43.5.825.
Pan J H, Liu S Q, Luo Z H, You G Q. 2007. Modes of occurrence and characteristics of phosphorates on Pacific Guyots and their genetic significance. Mineral Deposits, 26(2): 195-203, https://doi.org/10.3969/j.issn.0258-7106.2007.02.006. (in Chinese with English abstract)
Pan J H, Liu S Q, Yang Y, Liu X Q. 2002. Research on geochemical characteristics of major, trace and rare-earth elements in phosphates from the west pacific seamounts.Geological Review, 48(5): 534-541, https://doi.org/10.3321/j.issn:0371-5736.2002.05.012. (in Chinese with English abstract)
Pan J H, Liu S Q. 1999. Distribution, composition and element geochemistry of Co-rich crusts in the Western Pacific.Acta Geoscientia Sinica, 20(1): 47-54, https://doi.org/10.3321/j.issn:1006-3021.1999.01.007. (in Chinese with English abstract)
Ren J B, Wei Z Q. 2017. The discovery and implication of REE-rich phosphate in deep-sea. Geological Review, 63(S1): 13-14. (in Chinese with English abstract)
Ren X W, Liu J H, Shi X F, Cui Y C, Lin X H. 2011. Genesis and ore-forming stages of co-rich ferromanganese crusts from seamount M of Magellan Seamounts: evidence from geochemistry and Co chronology. Marine Geology & Quaternary Geology, 31(6): 65-74. (in Chinese with English abstract)
Rudnick R L, McDonough W F, Chappell B W. 1993.Carbonatite metasomatism in the Northern Tanzanian mantle: petrographic and geochemical characteristics.Earth and Planetary Science Letters, 114(4): 463-475, https://doi.org/10.1016/0012-821X(93)90076-L.
Smith W H F, Staudigel H, Watts A B, Pringle M S. 1989. The Magellan Seamounts: early cretaceous record of the south Pacific isotopic and thermal anomaly. Journal of Geophysical Research, 94(B8): 10 501-10 523, https://doi.org/10.1029/JB094iB08p10501.
Song Z Z, Yang Y, Gao H Y. 2009. Determination and implication for paleoceanography study of fluorine of iron-manganese crusts from the Magellan Seamounts.Geological Science and Technology Information, 28(5):91-95, https://doi.org/10.3969/j.issn.1000-7849.2009.05.013. (in Chinese with English abstract)
Staudigel H, Hart S R, Richardson S H. 1981. Alteration of the oceanic crust: processes and timing. Earth and Planetary Science Letters, 52(2): 311-327, https://doi.org/10.1016/0012-821X(81)90186-2.
Sun S S, McDonough W F. 1989. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. In: Saunders A D, Norry M J eds. Magmatism in the Ocean Basins. Geological Society, London, Special Publications. p.313-345, https://doi.org/10.1144/GSL.SP.1989.042.01.19.
Sun X M, Xue T, He G W, Ye X R, Zhang M, Lu H F, Wang S W. 2006. Noble gases isotopic compositions and sources of cobalt-rich crusts from west Pacific Ocean seamounts.Acta Petrologica Sinica, 22(9): 2 331-2 340, https://doi.org/10.3969/j.issn.1000-0569.2006.09.008. (in Chinese with English abstract)
Tang L M, Dong Y H, Chu F Y, Chen L, Ma W L, Liu Y G. 2019. Geochemistry and age of seamounts in the west Pacific: mantle processes and petrogenetic implications.Acta Oceanologica Sinica, 38(1): 71-77, https://doi.org/10.1007/s13131-019-1371-0.
Wang L L, Zhong H X, Zeng F C, Li Y, Zhu K C. 1999.Interelement relationships and their implications for crust genesis in cobalt-rich ferromanganese crusts from the MA and Mc seamounts of the Magellan Seamounts. Gresearch of Eological South China Sea, 26-46. (in Chinese with English abstract)
Wang Y M, Zhang H D, Liu J H, Zhang X H, Zhu B D. 2016.Abundances and spatial distributions of associated useful elements in co-rich crusts from Caiwei Seamount in Magellan Seamounts. Marine Geology & Quaternary Geology, 36(2): 65-74, https://doi.org/10.16562/j.cnki.0256-1492.2016.02.008. (in Chinese with English abstract)
Weaver B L. 1991. The origin of ocean island basalt endmember compositions: trace element and isotopic constraints. Earth and Planetary Science Letters, 104(2-4):381-397, https://doi.org/10.1016/0012-821X(91)90217-6.
Wei Z Q, Deng X G, Zhu K C, Yao H Q, Yang Y, Ren J B. 2017a. Characteristic of substrate rocks of Caiwei Seamounts in the West Pacific Ocean. Marine Geology Frontiers, 33(12): 1-6, https://doi.org/10.16028/j.1009-2722.2017.12001. (in Chinese with English abstract)
Wei Z Q, He G W, Deng X G, Yao H Q, Liu Y G, Yang Y, Ren J B. 2017b. The progress in the study and survey of oceanic cobalt-rich crust resources. Geology in China, 44(3): 460-472. (in Chinese with English abstract)
Ye L J, Chen Q Y, Zhao D X, Chen Z M, Chen Y M, Liu K W. 1989. The Phosphorites of China. Science Press, Beijing, China. p.169-196. (in Chinese)
Ye X R, Fang N Q, Ding L, Zhang M J. 2008. The noble gas contents and helium and argon isotopic compositions in the cobalt-rich crusts from the Magellan Seamounts. Acta Petrologica Sinica, 24(1): 185-192. (in Chinese with English abstract)
Zhang G L, Chen L H, Jackson M G, Hofmann A W. 2017.Evolution of carbonated melt to alkali basalt in the South China Sea. Nature Geoscience, 10(3): 229-235, https://doi.org/10.1038/ngeo2877.
Zhang G L, Smith-Duque C. 2014. Seafloor basalt alteration and chemical change in the ultra thinly sedimented South Pacific. Geochemistry, Geophysics, Geosystems, 15(7):3 066-3 080, https://doi.org/10.1002/2013GC005141.
Zhang W Y, Zhang F Y, Zhu K C, Yang K H, Hu G D, Cheng Y S, Li S J, Zhao H Q. 2009. Fractal research on seamount topography in the West Pacific Ocean. Geoscience, 23(6):1 138-1 146, https://doi.org/10.3969/j.issn.1000-8527.2009.06.020. (in Chinese with English abstract)
Zhao L H, Jin X L, Gao J Y, Li J B, Chu F Y. 2010. The research on the drifting history and possible origin of the Magellan Seamount Trail. Acta Oceanologica Sinica, 32(3): 60-66.(in Chinese with English abstract)
Zhu K C, Zhao Z B, Li Y. 2001. Cobalt-rich ferromanganese crusts from the MA, ME and MF seamounts of the Magellan Seamounts. Marine Geology & Quaternary Geology, 21(1): 33-38, https://doi.org/10.16562/j.cnki.0256-1492.2001.01.006. (in Chinese with English abstract)
Zhu K C. 2002. Petrology of the substrate in seamounts MA, MC, MD, ME and MF from Magellan Seamounts. Marine Geology & Quaternary Geology, 22(1): 49-56, https://doi.org/10.16562/j.cnki.0256-1492.2002.01.008. (in Chinese with English abstract)
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