Fig. 5
From: Recent production rates of cosmogenic nuclides in the igneous rocks of Jezero crater floor, Mars
(Left) Carbon isotopic composition versus rock depth after 100 Ma (million years), 1.4 Gy (billion years) and 2.5 Gy of exposure to the neutron flux measured by RAD for a target (a) rock. The initial total carbon content was set to 10, 30 and 100 ppm with \(\delta^{13}C\) at -20 ‰. (Right) Nitrogen isotopic composition versus rock depth after 100 Ma (purple curve), 1.4 Gy (green curve) and 2.5 Gy (blue curve) of exposure to the neutron flux measured by RAD, for a target (a) rock. The initial total nitrogen content was set at 10 ppm with \(\delta {}^{15}{N}_{0}\)= 0 ‰.
