Abstract: Meltwater from two rivers of Pituffik NW Greenland Ice sheet was analyzed for major and trace elements and stable isotopes. The data were collected together with microbiological data to determine weathering fluxes and microorganisms that may contribute to weathering in this northern glacial environment. Other Description: Cameron, K.A., Hagedorn, B., Dieser, M., Christner, B.C., Choquette, K., Sletten, R., Crump, B., Kellogg, C. and Junge, K. (2014) Diversity and potential sources of microbiota associated with snow on western portions of the Greenland Ice Sheet. Environmental Microbiology, n/a-n/a.