Details
| Original language | English |
|---|---|
| Article number | 45 |
| Journal | Communications Earth and Environment |
| Volume | 5 |
| Issue number | 1 |
| Publication status | Published - 20 Jan 2024 |
Abstract
Exposures of the Earth’s crust-mantle transition are scarce, thus, limiting our knowledge about the formation of subcontinental underplate cumulates, and their significance for metal storage and migration. Here, we investigated chalcophile metals to track sulfide crystallization within the Contact Series, an <150-m-thick pyroxenite-gabbronorite sequence, formed by mantle-derived melts, highlighting the boundary between the Balmuccia mantle peridotite and gabbronoritic Mafic Complex of the Ivrea-Verbano Zone. Within the Contact Series, numerous sulfides crystallized in response to the differentiation of mantle-derived underplated melts. Such sulfide-controlled metal differentiation resulted in anomalous Cu contents (up to ~380 ppm), compared to reference mantle (~19 ppm) and crustal samples (~1 ppm). We propose that the assimilation of continental crust material is a critical mechanism driving sulfide segregation and sulfide-controlled metal storage. Our results evidence that sulfides are trapped in the underplated mafic-ultramafic cumulates and that their enrichment in Cu may provide essential implications for crustal metallogeny.
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In: Communications Earth and Environment, Vol. 5, No. 1, 45, 20.01.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Underplated melts control sulfide segregation at the continental crust-mantle transition
AU - Pieterek, Bartosz
AU - Tribuzio, Riccardo
AU - Matusiak-Małek, Magdalena
AU - Ciążela, Jakub
AU - Horn, Ingo
AU - Weyer, Stefan
AU - Strauss, Harald
AU - Kuhn, Thomas
AU - Muszyński, Andrzej
N1 - Funding Information: We thank editors Renbiao Tao and Joe Aslin for their guidance as well as David Holwell and Rui Wang for their thorough and insightful comments that significantly improved the overall quality of the manuscript. This research was funded by the National Science Centre of Poland project no. 2018/31/N/ST10/02146. B. Pieterek was financially supported by the Adam Mickiewicz University Foundation in the academic year 2022/2023. No permissions were required for sampling campaign.
PY - 2024/1/20
Y1 - 2024/1/20
N2 - Exposures of the Earth’s crust-mantle transition are scarce, thus, limiting our knowledge about the formation of subcontinental underplate cumulates, and their significance for metal storage and migration. Here, we investigated chalcophile metals to track sulfide crystallization within the Contact Series, an <150-m-thick pyroxenite-gabbronorite sequence, formed by mantle-derived melts, highlighting the boundary between the Balmuccia mantle peridotite and gabbronoritic Mafic Complex of the Ivrea-Verbano Zone. Within the Contact Series, numerous sulfides crystallized in response to the differentiation of mantle-derived underplated melts. Such sulfide-controlled metal differentiation resulted in anomalous Cu contents (up to ~380 ppm), compared to reference mantle (~19 ppm) and crustal samples (~1 ppm). We propose that the assimilation of continental crust material is a critical mechanism driving sulfide segregation and sulfide-controlled metal storage. Our results evidence that sulfides are trapped in the underplated mafic-ultramafic cumulates and that their enrichment in Cu may provide essential implications for crustal metallogeny.
AB - Exposures of the Earth’s crust-mantle transition are scarce, thus, limiting our knowledge about the formation of subcontinental underplate cumulates, and their significance for metal storage and migration. Here, we investigated chalcophile metals to track sulfide crystallization within the Contact Series, an <150-m-thick pyroxenite-gabbronorite sequence, formed by mantle-derived melts, highlighting the boundary between the Balmuccia mantle peridotite and gabbronoritic Mafic Complex of the Ivrea-Verbano Zone. Within the Contact Series, numerous sulfides crystallized in response to the differentiation of mantle-derived underplated melts. Such sulfide-controlled metal differentiation resulted in anomalous Cu contents (up to ~380 ppm), compared to reference mantle (~19 ppm) and crustal samples (~1 ppm). We propose that the assimilation of continental crust material is a critical mechanism driving sulfide segregation and sulfide-controlled metal storage. Our results evidence that sulfides are trapped in the underplated mafic-ultramafic cumulates and that their enrichment in Cu may provide essential implications for crustal metallogeny.
UR - http://www.scopus.com/inward/record.url?scp=85182631260&partnerID=8YFLogxK
U2 - 10.1038/s43247-024-01218-9
DO - 10.1038/s43247-024-01218-9
M3 - Article
AN - SCOPUS:85182631260
VL - 5
JO - Communications Earth and Environment
JF - Communications Earth and Environment
IS - 1
M1 - 45
ER -