Komatiite Melt Inclusions.pdf

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🔗 Source: goldschmidtabstracts.info
📊 Size: 11 KB
👤 Author: Paul Beattie
⬇️ Downloads: 149

Summary

Olivine-hosted melt inclusions in Belingwe komatiites have compositions indicating a single parental melt with 25-28 wt% MgO and 1450-1480 oC liquidus temperature. H2O contents of melt inclusions are 0.18-0.26 wt%, likely representing magmatic values. A global mafic magmatic event at 2.48-2.45 Ga may have caused intensification of hydrothermal activity, leading to BIF deposition and glaciation during the Paleoproterozoic. Estimated CO2 sequestration from BIF deposition could have triggered global cooling, and carbonates associated with BIFs show enrichment in light carbon, possibly due to mantle input or enhanced organic carbon burial.

Description

Olivine-hosted melt inclusions in Belingwe komatiites have compositions indicating a single parental melt with 25-28 wt% MgO and 1450-1480 oC liquidus...

Technical Information

  • File Format: PDF
  • File Size: 11 KB
  • Pages: 1
  • Language: EN
  • Author: Paul Beattie
  • Total Downloads: 149
  • Last Updated: 1 week ago

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