Cr-spinel records metasomatism not petrogenesis of mantle rocks
dc.contributor.author | Gamal El Dien, H. | |
dc.contributor.author | Arai, S. | |
dc.contributor.author | Doucet, L.S. | |
dc.contributor.author | Li, Zheng-Xiang | |
dc.contributor.author | Kil, Y. | |
dc.contributor.author | Fougerouse, Denis | |
dc.contributor.author | Reddy, Steven | |
dc.contributor.author | Saxey, David | |
dc.contributor.author | Hamdy, M. | |
dc.date.accessioned | 2020-05-21T03:22:11Z | |
dc.date.available | 2020-05-21T03:22:11Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Gamal El Dien, H. and Arai, S. and Doucet, L.S. and Li, Z.X. and Kil, Y. and Fougerouse, D. and Reddy, S.M. et al. 2019. Cr-spinel records metasomatism not petrogenesis of mantle rocks. Nature Communications. 10 (1): ARTN 5103. | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/79360 | |
dc.identifier.doi | 10.1038/s41467-019-13117-1 | |
dc.description.abstract |
Mantle melts provide a window on processes related to global plate tectonics. The composition of chromian spinel (Cr-spinel) from mafic-ultramafic rocks has been widely used for tracing the geotectonic environments, the degree of mantle melting and the rate of mid-ocean ridge spreading. The assumption is that Cr-spinel’s core composition (Cr# = Cr/(Cr + Al)) is homogenous, insensitive to post-formation modification and therefore a robust petrogenetic indicator. However, we demonstrate that the composition of Cr-spinel can be modified by fluid/melt-rock interactions in both sub-arc and sub-mid oceanic mantle. Metasomatism can produce Al-Cr heterogeneity in Cr-spinel that lowers the Cr/Al ratio, and therefore modifies the Cr#, making Cr# ineffective as a geotectonic and mantle melting indicator. Our analysis also demonstrates that Cr-spinel is a potential sink for fluid-mobile elements, especially in subduction zone environments. The heterogeneity of Cr# in Cr-spinel can, therefore, be used as an excellent tracer for metasomatic processes. | |
dc.language | English | |
dc.publisher | NATURE PUBLISHING GROUP | |
dc.relation.sponsoredby | http://purl.org/au-research/grants/arc/FL150100133 | |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
dc.subject | Science & Technology | |
dc.subject | Multidisciplinary Sciences | |
dc.subject | Science & Technology - Other Topics | |
dc.subject | MID-ATLANTIC RIDGE | |
dc.subject | ANDESITIC AVACHA VOLCANO | |
dc.subject | MARIANA FORE-ARC | |
dc.subject | PERIDOTITE XENOLITHS | |
dc.subject | SERPENTINIZED PERIDOTITES | |
dc.subject | ABYSSAL PERIDOTITES | |
dc.subject | SPREADING RIDGE | |
dc.subject | EASTERN DESERT | |
dc.subject | WEDGE BENEATH | |
dc.subject | KAMCHATKA ARC | |
dc.title | Cr-spinel records metasomatism not petrogenesis of mantle rocks | |
dc.type | Journal Article | |
dcterms.source.volume | 10 | |
dcterms.source.number | 1 | |
dcterms.source.issn | 2041-1723 | |
dcterms.source.title | Nature Communications | |
dc.date.updated | 2020-05-21T03:22:07Z | |
curtin.department | School of Earth and Planetary Sciences (EPS) | |
curtin.department | John de Laeter Centre (JdLC) | |
curtin.accessStatus | Open access | |
curtin.faculty | Faculty of Science and Engineering | |
curtin.contributor.orcid | Reddy, Steven [0000-0002-4726-5714] | |
curtin.contributor.orcid | Li, Zheng-Xiang [0000-0003-4350-5976] | |
curtin.contributor.orcid | Saxey, David [0000-0001-7433-946X] | |
curtin.contributor.researcherid | Reddy, Steven [A-9149-2008] | |
curtin.contributor.researcherid | Li, Zheng-Xiang [B-8827-2008] | |
curtin.contributor.researcherid | Saxey, David [H-5782-2014] | |
curtin.identifier.article-number | ARTN 5103 | |
dcterms.source.eissn | 2041-1723 | |
curtin.contributor.scopusauthorid | Reddy, Steven [7402263354] | |
curtin.contributor.scopusauthorid | Li, Zheng-Xiang [57192954386] [57198889498] [7409074764] | |
curtin.contributor.scopusauthorid | Fougerouse, Denis [56418452200] | |
curtin.contributor.scopusauthorid | Saxey, David [15059256300] |