2 Works

A global review of carbonatite-hosted fluid inclusions and the role of fluid release on carbonatite magma ascent

Benjamin Florian Walter , Johannes Giebel , Matthew Steele-MacInnis , Michael Marks , Jochen Kolb & Gregor Markl
Carbonatites crystallize from mantle-derived carbonate- and volatile-rich melts that exsolve large amounts of fluids during their ascent through and emplacement into the crust. A global review of available fluid inclusion data for carbonatitic systems from variable emplacement depths identified four types of fluid inclusions: (type-I) vapour-poor H2O-NaCl fluids with <50 wt.% salinity; (type-II) vapour-rich H2O-NaCl-CO2 fluids with <5 wt.% salinity; (type-III) multi-component fluids with high salinity without CO2; and (type-IV) multi-component fluids with high salinity...

Starting the recycling engine: how far back in time can we fingerprint crust in Earth’s mantle?

Sebastian Tappe , Katie A. Smart & Richard A. Stern
The nature of the tectonic processes that shaped the early Earth remain unresolved, hampered not only by the sparse Early Archaean crustal rock record, but also by the dearth of tangible mantle samples (e.g., xenoliths and diamonds) older than 3 Ga. Investigating the Archaean mantle provides a complementary foil to the knowledge gleaned from the early Earth crust, and can be used to trace the onset of crustal recycling, but also to evaluate the secular...

Registration Year

  • 2022
    2

Resource Types

  • Text
    2

Affiliations

  • University of Alberta
    2
  • University of the Free State
    1
  • University of Tübingen
    1
  • University of the Witwatersrand
    1
  • Technical University of Berlin
    1
  • Karlsruhe Institute of Technology
    1
  • University of Johannesburg
    1