Palaeoecological constraints on late Glacial and Holocene ice retreat in the Southern Andes (53°S)

Geomorphology of marine and glacio-lacustrine terraces and raised shorelines in the northern sector of Península Brunswick, Patagonia, Straits of Magellan, Chile

“…The LGM moraines (Glacial stage B) were found along the northeastern coast of Seno Otway ( Figure 2). The moraine system associated to Glacial stage C is not preserved or yet detected along the shore of Seno Otway, whereas the moraines of Glacial stage D formed closer to the Andes in the south-western area of Seno Otway (Kilian et al, 2007). On the western coast of the Strait of Magellan, moraine ridges of Glacial stages B, C and D are deposited near Puntas Arenas and are linked across the Strait on the eastern side.…”

Paleoenvironmental interpretation of late Quaternary molluscan assemblages from southern South América: A taphonomic comparison between the Strait of Magellan and the Beagle Channel

“…It was repeatedly occupied by outlet glaciers of an expanded southern Andean ice cap during successive Pleistocene glaciations (Porter et al, 1992;Kilian et al, 2007). Today, the strait is dominated by an indented rocky shoreline and characterized by semi-diurnal and heterogeneous tides with mean amplitudes ranging from 1.2 m on the west coast to 9 m in the Atlantic inlet of the east coast (Andrade, 1991).…”

“…For instance, for the Argentinian coastlines, Aguirre et al (2005Aguirre et al ( , 2006 described the shift of warm water mollusks to higher latitudes on Bonaerensian coasts (south Atlantic) during the climatic optimum linked with a rise in the oceanic temperature and salinity. The effect of this period is still an open debate for southern Patagonia, although changes in sea level in Tierra del Fuego (Porter et al, 1984;Rabassa et al, 1986), as well as changes in moisture and temperature (Pendall et al, 2001;Kilian et al, 2007) have been documented. Results suggest that there are no changes in the species composition since 6,000 years BP, which agrees with a previous work of Gordillo (1999) of deposits in the Beagle Channel.…”

GV Annual Meeting 2009

“…A sediment core of 8.2 m was retrieved at Bahia Williams from 35 m water depths at the northern shore of Seno Skyring, Southern Andes (53°S), a marine fjord and ancient proglacial lake (Kilian et al, 2007) to document sedimentation of the last 8000 years. The purpose was to obtain a high-resolution climatic and environmental record.…”