Geochemical, biological and clumped isotopologue evidence for substantial microbial methane production under carbon limitation in serpentinites of the Samail Ophiolite, Oman

In high-pH ($\text{pH}>10$) fluids that have participated in low-temperature ($<150\,^{\circ}\text{C}$) serpentinization, the dominant form of C is often methane (CH$_{4}$), but the origin of this ...