Carbonates from the lower part of transition zone or even the lower mantle

Frank E. Brenker*, Christian Vollmer, Laszlo Vincze, Bart Vekemans, Anja Szymanski, Koen Janssens, Imre Szaloki, Lutz Nasdala, Werner Joswig, Felix Kaminsky

*Corresponding author for this work

Research output: Contribution to journalArticle

164 Citations (Scopus)

Abstract

Effective CO2-storage in the shallow solid Earth mainly occurs by the formation of carbonates. Although the possibility of transport and storage of carbonates to great depth is demonstrated experimentally, ultra-deep mantle carbonates have not been found before. Applying several in situ analytical techniques on inclusions in diamonds from Juina (Brazil) originating from the lower part of the transition zone (> 580 km) or even the lower mantle (> 670 km), reveal the existence of deep Earth carbonates. These finding unquestionably show that at least locally carbonates exist within the deep Earth and may indicate that the Earth's global CO2-cycle has an ultra-deep extension.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalEarth and Planetary Science Letters
Volume260
Issue number1-2
DOIs
Publication statusPublished - 15 Aug 2007
Externally publishedYes

Keywords

  • inclusions in diamond
  • Juina
  • mantle heterogeneity
  • Raman spectroscopy
  • X-ray fluorescence

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