- Hauri, Erik Professor
The second Sloan grant awarded to the DCO’s Reservoirs and Fluxes (RF) community is developing, promoting, and nurturing research activities in four important areas. International scientific initiatives in volcanic activity (DECADE) and natural diamonds (DMGC) engage dozens of researchers in 11 countries. The RF community also wishes to use the grant to develop a new initiative on the quantification of the tectonic flux of deep carbon in continental areas, and to initiate the first geodynamical reference models for the circulation of deep carbon within volcanic systems and within the Earth from crust to core. Three types of projects, PI-led proposals, DECADE awards, and DMGC subawards/grants, have been funded A modest amount of funds administer the R&F Office at Carnegie.
The DECADE project is aimed at improving considerably our understanding of the sources and strengths of CO2 degassing from volcanoes, by evaluating in detail the main volcanic sources, and by monitoring in real time carefully selected and representative volcanic systems. The goal is to establish CO2 monitoring networks on 25 of the world’s 150 most actively degassing volcanoes and undertake related studies (direct gas sampling and analysis, melt inclusions, satellite monitoring) to provide new data for direct degassing of deep Earth carbon to the hydrosphere.
The DMGC (Diamonds and Mantle Geodynamics of Carbon) group is an international network of scientists studying natural diamonds, their inclusions, and their conditions of formation to understand the deep Earth carbon cycle. Natural diamonds are direct samples of carbon from Earth’s mantle and directly record the deep carbon cycle back through geologic time. This group seeks to establish a new international infrastructure for diamond research, including both virtual and actual registered sample collections and a database of diamond and inclusion geochemistry, to advance studies of natural diamonds and experiments on diamond-forming fluids/melts for the understanding of carbon mobility in Earth’s mantle today and through geologic time.