Gerald Osborn's research while affiliated with The University of Calgary and other places

... Another way to reconstruct the timing, duration and the scale of glacier retreat in the past is the analysis of organic material primarily of in situ wood (e.g. Agatova et al., 2012;García et al., 2020;Joerin et al., 2008;Le Roy et al., 2015;Luckman et al., 2020;Nicolussi and Patzelt, 2000;Nicolussi and Schlüchter, 2012) and other plant macrofossils (e.g. Humlum et al., 2005;Miller et al., 2017) buried by advancing glaciers and later released due to subsequent glacier retreat. ...

... Evidence for glacier advances remains low until~4.0 cal kyr BP, when records along the western side of the NPI and in the CDI suggest coeval advances around 3.7 cal kyr BP (Bertrand et al., 2012a;Menounos et al., 2020). The latter may have preceded the period of glacier shrinkage recorded by the JPC42 sediment core between 3.9 and 2.4 cal kyr BP (Fig. 8). ...

... Data from this region may therefore provide important information relevant to the present debate about the magnitude, timing, and possible cause(s) of Lateglacial and Holocene glacier and climate variations (e.g. Kutzbach and Guetter, 1986;Davis and Osborn, 1988;Karlé n and Kuylenstierna, 1996). ...

... Based on phototopographic images taken during surveys in 1917 and 1919 these photos provide basic reference materials documenting the historical extent of many of the outlet glaciers from the Icefield (e.g. Luckman, 1988a;Osborn et al., 2001). ...

... As for floods, they are more rapid phenomena in which the role of aquifers is more ambiguous: the buffering effect can consist in storing excess water and mitigating high flows [Chinnasamy, 2016], but Kirchner [2003] highlighted that in many catchments, the flood flows are often mainly composed of groundwater that is mobilised by the excess recharge of aquifers, which was confirmed by local studies [Guérin et al., 2019, Wittenberg et al., 2019. Flood events can even be caused by a rapid increase of water table levels in aquifers, which is known as groundwater flooding [Abboud et al., 2018]. The flood event in the Somme basin in 2000-2001 was concomitant to a rise in the groundwater table of more than 10 m [Pointet et al., 2003], with a large part of flood water carrying the isotopic signature of the chalk aquifer [Négrel and Petelet-Giraud, 2005]. ...

... Alberta despite the increase in interdisciplinary interest in the region as an "ice-free corridor" (Reeves 197 1, 1973;Stalker 1977Stalker , 1978Stalker , 1980Harris and Waters 1977;Jackson 1978Jackson , 1979Jackson , 1980. The additional need for postglacial paleoenvironmental information has also been generated by the interest in the Holocene glacial history of the Canadian Rocky Mountains (Heusser 1956;Gardner 1972;Osborn 1975;Luckman 1977;Harris andHowell 1977, 1978;Luckman et al. 1978;Luckman and Osbom 1979). ...

... Saunders et al. 2018;Xia et al. 2018). There is evidence for a northward shift or expansion of the SHWWduring geomorphology (Mercer 1976;Rabassa & Clapperton 1990;Coronato et al. 2009), pollen (Musotto et al. 2017;Navatini et al. 2019), charcoal analyses (Huber et al. 2004;Mansilla et al. 2016), dendrochronology (Aravena et al. 2002;Masiokas & Villalba 2004) and multiproxy sediment records (Rogers & van Loon 1982;Ariztegui et al. 2007;Moy et al. 2008Moy et al. , 2011Borromei et al. 2010;Lamy et al. 2010;Waldmann et al. 2010;Kilian & Lamy 2012;van Daele et al. 2016;Quade & Kaplan 2017;Zolitschka et al. 2019). These palaeoclimate reconstructions reveal apparently contradictory data and regional syntheses remain controversial (Kilian & Lamy 2012). ...

... This paper largely avoids going over the ground covered by numerous critical reviews [3][4][5][6][7][8][9][10][11][12][13][14]. The intention here is to provide a commentary and background information to help practitioners come to a clearer understanding of the technique and suggest possible future directions. ...

... A wealth of information is available in the literature related to Holocene glacial and paleoclimate change and the readers are referred to Solomnia et al. (2015) for a comprehensive review of the Holocene glacier fluctuations around the globe. On the other hand data on the Holocene glacial record of the Mediterranean region are still relatively scarce compared to LGM record but numerous work have been published in special issues (e.g., Davis and Osborn 1988;Davis et al. 2009;Oliva et al. 2020a, b). ...

... Rainier? Watson et al. (2016) identified a cryptotephra (SV-L5) comprising glass shards of unknown source in Svartkälsjärn, Sweden, mixed with two shards of Hekla origin (possibly Hekla 5/Lairg A) and with an estimated age of~4500-4000 BCE. The unidentified shards include some datapoints whose geochemistries suggest the presence of mineral inclusions in the analyses, but a core group of medium-Ca (CaO~2.5 wt %) composition lies with the geochemical field of proximal glass from Rainier (Sisson and Vallance, 2009;Samolczyk et al., 2016;Fig. 8). ...