Joseph R. Graney

TL;DR: In this article, differences in lead isotopic compositions and concentrations in sediment from large lakes ( Lake Erie, Ontario, and Michigan) and small ones (Deep Lake and Lake Andrus) are used to infer temporal changes in the source(s) of anthropogenic Pb in the Great Lakes region.

TL;DR: Results support the conclusion of a previous epiphytic lichen biomonitor study that near-field atmospheric deposition in the AOSR is dominated by coarse fraction fugitive dust from bitumen mining and upgrading operations, and suggest that fugitive dust abatement strategies targeting the three major sources of PM10-2.5 would significantly reduce near- field atmospheric deposition gradients in theAOSR and reduce ambient PM concentrations in the Fort McKay community.

TL;DR: In this article, the authors carried out sequential extractions on 15 samples of dry-drilled cuttings and core material from the gas-producing Middle Devonian Marcellus Shale and surrounding units to identify the host phases and evaluate the mobility of selected trace elements during cut-ings disposal.

TL;DR: The contribution of inorganic air pollutant emissions to atmospheric deposition in the Athabasca Oil Sands Region (AOSR) of Alberta, Canada, was investigated in the surrounding boreal forests, using a common epiphytic lichen bioindicator species ( Hypogymnia physodes ) and applying multiple receptor models.

TL;DR: The McLaughlin gold deposit as discussed by the authors is a large hot spring-type gold deposit located in the northern Coast Ranges of California at the faulted lithologic contact between the Coast Range ophiolite and the Great Valley sequence.