Subsurface microbial diversity in deep-granitic-fracture water in Colorado

Jason W. Sahl, Raleigh Schmidt, Elizabeth D. Swanner, Kevin W. Mandernack, Alexis S. Templeton, Thomas L. Kieft, Richard L. Smith, William E. Sanford, Robert L. Callaghan, Jeffry B. Mitton, John R. Spear