Mottl, M.J. (2012), VentDB: Mid-Ocean Ridge Hydrothermal Vent Chemistry Data Collection in the EarthChem Library

The VentDB datasets are an effort to provide a complete set of global hydrothermal vent chemistry data. Chemical data for seafloor hydrothermal springs are fundamental to the study of mid-ocean ridge and seafloor processes, ocean water chemistry, global geochemical cycles, as well as vent ecosystems and sub-seafloor biospheres. By facilitating access to the global geochemical data set for hydrothermal springs, VentDB has a major impact on global geochemistry, microbiology, and ore deposits research.

 

Twenty collections have been compiled and in some cases corrected and analyzed by M.J. Mottl. Most collections are based on a site-specific locale: they contain data from multiple publications that have been combined into a single file because these publications contribute various chemical data for a shared set of samples, or samples from the same hydrothermal vent fields.

 

The collections include information about the references, samples, vents, raw data, end-member data, analytical methods. The Explanatory Notes document includes background information on sampling devices, methodology for selecting data and calculating zero-Mg end-member compositions for individual vents, geolocation data, and a complete list of references.

 

 

Figure. A line plot of published temperature and lowest Mg concentration measured in seafloor hot springs during 195 sampling episodes from 148 different vents. BSW = bottom seawater, GSC = Galapagos Spreading Center, EPR = East Pacific Rise, JFR = Juan de Fuca Ridge, MAR = Mid-Atlantic Ridge, SedR = sedimented ridge, BAB = back-arc basin.

 

Dr. Mottl welcomes contributions to the dataset. Do not hesitate to contact him at mmottl@soest.hawaii.edu. Additional vent data can be contributed using the EarthChem data templates.

 

Michael J. Mottl, University of Hawaii, DOI: 10.1594/IEDA/100207