Middle Cambrian Brine Seeps on the Kicking Horse Rim and Their Relationship to Talc and Magnesite Mineralization and Associated Dolomitization, British Columbia, Canada

Evaluating new fault‐controlled hydrothermal dolomitization models: Insights from the Cambrian Dolomite, Western Canadian Sedimentary Basin

“…The dolomitised sequences of Cambrian strata in the Canadian Rocky Mountains provide excellent exposure of fault‐controlled dolostone bodies which are easily accessed, allowing for detailed, methodical sampling across the dolostone bodies. Prior studies of the Cambrian (Series 2) Cathedral Formation (Yao & Demicco, ; Jeary, ; Vandeginste et al ., ; Powell et al ., ) have shown that dolomitization involved hydrothermal fluids in the vicinity of the Kicking Horse Rim (Fig. A) and surrounding area.…”

“…A) and surrounding area. These studies invoked a range of models for explaining dolomitization, including post‐Silurian topographically‐driven fluid (Yao & Demicco, ), focused fluid flow of hot and saline brines along the fold thrust belt associated with Devono–Carboniferous Antler Orogeny (Vandeginste et al ., ), Cambrian‐aged Mg‐rich brine seeps sourced from Middle Proterozoic magnesite (Powell et al ., ) and multiple dolomitization events during the Cambrian period (Series 2 to Furongian) when early dolomitization was overprinted by hydrothermal dolomite, producing several hydrobrecciated zones (Jeary, ). Of these models, the suggestion by Powell et al .…”

“…Of these models, the suggestion by Powell et al . () that Middle Proterozoic magnesite sourced dolomitizing brines have received relatively little attention; this is evaluated here with reference to new models of ultramafic carbonation to drive dolomitization.…”

Dolomite Fronts and Associated Zinc-Lead Mineralization, Usa

“…Our examination of the drill core indicates that rocks to the south-southeast of the reef (evaporite basin) and to the north-northwest of the reef (limy shale basin rocks) are unaltered and not part of the of the alteration system. Additionally, The Monarch and Kicking Horse deposits in eastern British Columbia, Canada, are on a dolomite front in the Middle Cambrian Cathedral Formation (Powell et al, 2006). This dolomite front, with spatially related base metal mine workings, can be seen in natural cross section where the Trans-Canada highway passes through the continental divide at Kicking Horse Pass.…”

Introduction to the Special Issue commemorating the 30th anniversary of the Royal Tyrrell Museum of Palaeontology, with a summary of the museum’s early history and its research contributions

“…Outside of Alberta, RTMP researchers have worked on a variety of geological, palynological, and K-Pg boundary studies in the Upper Cretaceous and Palaeogene, extending from the Canadian Arctic southwards into northern Mexico (e.g., Eberth et al 1990Eberth et al , 2004Sweet and Braman 1992;Sweet et al 1999;Eberle and Eberth 2015;Redman et al, In press), and on geological studies in the Lower Cretaceous, Permian, and Triassic of the western USA (Eberth and Miall 1991;Berman 1993, 2005;Eberth et al 2006;Ramezani et al 2011) and in Upper Cambrian, Burgess Shale-equivalent beds of southeastern British Columbia (e.g., Powell et al 2003Powell et al , 2006Collom et al 2009;). Off-continent, collaborative geological and palynological work has been undertaken for dinosaur-bearing formations in the Jurassic and Cretaceous of China (e.g., Eberth et al 2001a;Li et al 2010) and in the Upper Cretaceous of Mongolia (e.g., Currie and Eberth 1993;Jerzykiewicz et al 1993;Eberth et al , 2009aEberth et al , 2009b, Argentina (D.A.…”