Rock-magnetic proxies from a sediment profile of Aike Lake ...

• Main Authors: Lisé-Pronovost, Agathe, St-Onge, Guillaume, Gogorza, Claudia, Haberzettl, Torsten, Jouve, Guillaume, Francus, Pierre, Ohlendorf, Christian, Gebhardt, Catalina, Zolitschka, Bernd
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2015
• Subjects: Composite Core; Potrok Aike Maar Lake Sediment Archive Drilling Project PASADO; Southern Ocean; Patagonia; Guillaume; Catalina; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.1594/pangaea.837595; https://doi.pangaea.de/10.1594/PANGAEA.837595

The sedimentary archive from Laguna Potrok Aike is the only continuous record reaching back to the last Glacial period in continental southeastern Patagonia. Located in the path of the Southern Hemisphere westerly winds and in the source region of dust deposited in Antarctica during Glacial periods, southern Patagonia is a vantage point to reconstruct past changes in aeolian activity. Here we use high-resolution rock-magnetic and physical grain size data from site 2 of the International Continental scientific Drilling Program (ICDP) Potrok Aike maar lake Sediment Archive Drilling prOject (PASADO) in order to develop magnetic proxies of dust and wind intensity at 52°S since 51,200 cal BP. Rock-magnetic analysis indicate the magnetic mineral assemblage is dominated by detrital magnetite. Based on the estimated flux of magnetite to the lake and comparison with distal dust records from the Southern Ocean and Antarctica, kLF is interpreted as a dust indicator in the dust source of southern Patagonia at the ... : Supplement to: Lisé-Pronovost, Agathe; St-Onge, Guillaume; Gogorza, Claudia; Haberzettl, Torsten; Jouve, Guillaume; Francus, Pierre; Ohlendorf, Christian; Gebhardt, Catalina; Zolitschka, Bernd (2015): Rock-magnetic proxies of wind intensity and dust since 51,200 cal BP from lacustrine sediments of Laguna Potrok Aike, southeastern Patagonia. Earth and Planetary Science Letters, 411, 72-86 ...