Fig. 4: Rare earth element pattern of the Nantuo pyrite.
From: Active methanogenesis during the melting of Marinoan snowball Earth
Rare earth element (REE) data are normalized to post-Archean Australian shale (PAAS). Samples formed in the basin environment (Tongle, Yazhai, and Datan section) are strongly depleted in HREE. Samples from the slope region (Huakoushan section) enrich in MREE.
