At the first DCO Early Career Scientist Workshop in Costa Rica, February 2014, the attendees set a goal to continue building and shaping a network of early career deep carbon scientists, and to strive to meet the needs of this network within the broader DCO community. As part of meeting this goal, several workshop participants crafted session proposals for the 2014 AGU Fall Meeting to cover myriad aspects of the DCO program. All three proposals were accepted. We encourage all DCO scientists to submit their abstracts. (Links may expire over time.)
Carbon Chemistry in the Deep Earth (Session ID#: 3163)
Conveners: Daniel Hummer (UCLA), Marius Millot (Lawrence Livermore National Laboratory)
Although Earth's interior may contain more carbon than is present at the surface, we know little about carbon's chemical and physical behavior at the extreme temperatures and pressures of Earth's interior. This session invites theoretical and experimental contributions on the chemistry and physics of carbon at conditions relevant to the mantle and core of Earth or other planetary bodies. We welcome studies including but not limited to: 1) the atomic structure of new carbon-bearing phases and their physical and chemical properties, 2) equations of state of carbon-bearing phases, 3) the effect of different oxidation states on carbon's chemical/physical properties, 4) reactions of carbon-bearing materials, 5) thermodynamics of carbon phases at extreme conditions, and 6) novel in situ techniques for the analysis of carbon-bearing materials at extreme conditions, especially techniques utilizing synchrotron radiation.
Invited speakers: Rajdeep Dasgupta (Rice University), Norimasa Ozaki (Osaka University), others TBD
Deep cycling of carbon within and beyond the limits of life (Session ID#: 3050)
Conveners: Mark Lever (Center for Geomicrobiology, Aarhus), Aude Picard (Harvard University), Claire Cousins (University of Edinburgh)
A detailed understanding of the carbon cycle in subsurface environments is essential to understanding atmospheric, hydrospheric, and lithospheric chemistry over time, on Earth and beyond. Yet despite recent advances through research on subsurface sediments, crustal environments, aquifers, and subsurface-derived fluid samples, fundamental questions regarding subsurface carbon flux and speciation remain unanswered. This interdisciplinary session aims to bring together scientists with a shared interest in understanding the subsurface carbon cycle from the molecular to the planetary scale. Themes may include, but are not restricted to, (1) field and laboratory investigations on the biological and abiotic synthesis, transformation, and movement of carbon compounds, (2) the nature and extent of biotic and abiotic reaction rates, (3) environmental limits of deep life (biotic fringe), (4) diversity of deep life as it relates to the distribution of carbon compounds, (5) potential for active extraterrestrial carbon cycling, or (6) models that integrate aspects of the above.
Invited speakers: Barbara Sherwood Lollar (University of Toronto), Jennifer Biddle (University of Delaware), Matt Schrenk (Michigan State University), Everett Shock (Arizona State University)
Conveners: Vincenzo Stagno (Carnegie Institution of Washington), Taryn Lopez (University of Alaska Fairbanks), Sami Mikhail (Carnegie Institution of Washington/University of Edinburgh), Anja Rosenthal (University of Minnesota/Universitaet Bayreuth)
The deep carbon cycle is of fundamental importance to Earth processes over geologic time such as subduction, magmatism, volcanism, and ultimately climate variability, yet estimations of volatile fluxes between Earth’s interior (Earth’s core and mantle) and the exosphere remain highly controversial. This session aims to promote the latest multidisciplinary research in carbon science focusing on several topics. These include, but are not limited to, (1) solubility, storage and speciation of volatile species (C-O-H-N-S) within planetary interiors; (2) origin and migration of carbon-rich fluids and melts and their impact on redox processes, diamond formation, mantle metasomatism and associated (alkaline) magmatism; (3) carbon isotope fractionation; and (4) global carbon release to the exosphere through volcanic, tectonic and other styles of Earth degassing. We invite contributions from volcanology, natural and experimental rock/fluid geochemistry and petrology, mineral physics, theoretical and computational studies. Submissions by early career scientists and graduate students are particularly encouraged.
Invited speakers: Dimitri Sverjensky (Johns Hopkins University), Tobias Fischer (University of New Mexico), Stephen Foley (Macquarie University), Arno Rohrback (University Muenster)
A full announcement of all DCO-related sessions can be found here, and conveners with accepted sessions are encouraged to contact the Engagement Team (firstname.lastname@example.org) with any relevant information.