The Fe-Isotope System and Its Applicability as a Biosignature

Authors :: Beard, Brian L
Johnson, Clark M
Skulan, Joseph
Taylor, Lawerence A
Sun, Henry
Cox, Lea
Nealson, Kenneth H
Sinha, Mahadeva P
Gerdenich, Michael J
Source :: Lunar and Planetary Science XXXII.
Publication Year :: 2001
Publisher :: United States: NASA Center for Aerospace Information (CASI), 2001.
Abstract: High precision (0.05) Fe isotope analyses show that igneous rocks and loess are invariant but chemical sediments have variable compositions. The relative roles of abiologic and biologic fractionations that produced this range are discussed. Additional information is contained in the original extended abstract.