Project Details
Projekt
Gas chemistry and carbon cycling at hydrothermal systems along the Mid-Atlantic Ridge: time- and space-referenced biogeochemical and isotopic investigations
Applicant
Dr. Richard Seifert (†)
Subject Area
Mineralogy, Petrology and Geochemistry
Term
from 2003 to 2011
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 5416317
... Main goal is to obtain insight into the essential geochemical and biological processes. Thus, the study stands in the frame of a close interdisciplinary co-operation between working groups rooted in the fields of mineralisation - petrology, geochemistry of vent fluids - gas chemistry, biogeochemistry - organic geochemistry, and microbiology-zoology. This study aims to elucidate the transformation of carbon species and reduced gases brought along by hydrothermal fluids. Three goals are in its focus (i) to understand formation processes and the respective composition of fluids (ii) to describe the biogeochemical transformation processes of carbon species and hydrogen (iii) characterisation of extend and relevance of hydrothermal cyclicity by charting the variability of vent fluids in time and space. For this purpose, concentrations and isotope signatures (C, H) of the main reactive gases methane and hydrogen as well as of other components of the carbon cycle namely C2-C5 hydrocarbons, dissolved organic matter (DOC), CO2, and biomass are determined. It is aspired to compile a comprehensive data set for geographically apart hydrothermal systems including information on temporal variation that allows to combine the identified geochemical and biological processes in model description of the total system.
DFG Programme
Priority Programmes
International Connection
Denmark
Participating Persons
Professor Dr. Wolfgang Bach; Professor Dr. Colin Devey; Professorin Dr. Nicole Dubilier; Professor Dr. Anton Eisenhauer; Dr. Carl-Dieter Garbe-Schönberg; Professor Dr. Karsten Matthias Haase; Dr. Robin Keir; Professorin Dr. Andrea Koschinsky; Dr. Jan Kuever; Dr. Klas S. Lackschewitz; Dr. Anke Meyerdierks; Professorin Dr. Mirjam Perner; Dr. Sven Petersen; Professor Dr. Gregor Rehder; Professorin Dr. Monika Rhein; Professor Dr. Harald Strauß
