Fig. 1: Sampling locations, geological formations, and groundwater ages.
From: Hydrogen and dark oxygen drive microbial productivity in diverse groundwater ecosystems
a Location of studied groundwater wells within the energy resources context of the province of Alberta. Colors indicate the groundwater age at each well (yellow: younger waters; red: intermediate age; blue: older waters that are sulfate-rich; purple: older waters with little sulfate). Circle size represents average microbial cell numbers in the groundwater samples, ranging from 104 (smallest full circle) to 107 cells per mL (largest circle). The map was created using Arc-GIS v10.8 b Relative proportion of water types in the surficial, channel, and bedrock sediments, as well as in major geological formations of Alberta, showing that groundwater geochemistry evolved with the increasing age of the formations. NA not assessed, HSC Horseshoe canyon, Gp. Group.
