Little is known about large sulfur bacteria (LSB) that inhabit sulfidic groundwater seeps in large lakes. To examine how geochemically relevant microbial metabolisms are partitioned among community members, we conducted metagenomic analysis of a chemosynthetic microbial mat in the Isolated Sinkhole, which is in a deep, aphotic environment of Lake Huron. For comparison, we also analyzed a white ...

Understanding the water balance of large groundwater systems is fundamental for the sustainable management of the resource. However, measuring many of the major components of the water balance pose considerable challenges and are thus estimated through modelling. A shortcoming of the modelling approach is that the water balance may have high bias and uncertainty due to insufficient information....

Sediment ejecta mechanism contributes significantly to the severity of liquefaction-induced ground failure (e.g., excessive land subsidence). Estimating amount ejected sediment is a key step assess failure; however, procedures quantify it are currently lacking. post-shaking phenomenon resulting from migration and redistribution excess-pore-water-pressure (ue) generated during earthquake shaking...

New members of the order Thermotogales were isolated from nonvolcanically heated geothermal environments, including oil fields and waters of the Great Artesian Basin of Australia, thereby extending their known habitats, previously recognized primarily as volcanic. The hyperthermophilic and thermophilic members of Thermotogales of volcanic origin, together with the recently described nonvolcanic...

Policies surrounding energy development are frequently implemented in response to known or perceived problems. South Africa is a unique position develop prospective policies that build on knowledge gained from elsewhere. This paper provides analysis of hydrogeological risk pathways and vulnerability attributes advance anticipated shale gas operations the Karoo Basin Africa. The ‘hazard-pathways...