Petrographic and Geochemical Records of Climate Perturbation in Carbonates from a Perennially Ice-Covered Antarctic Lake

• Main Author: Clance, Jared
• Format: Text
• Language: English
• Published: UNM Digital Repository 2022
• Subjects: Antarctic carbonates; McMurdo Dry Valleys; Lake Fryxell; carbonate oxygen isotopes; paleoclimate; carbonate redox; Biogeochemistry; Sedimentology; Antarctic; Fryxell; Antarc*; Antarctica
• Online Access: https://digitalrepository.unm.edu/eps_etds/301; https://digitalrepository.unm.edu/cgi/viewcontent.cgi?article=1323&context=eps_etds

Carbonate precipitation in perennially ice-covered Lake Fryxell, McMurdo Dry Valleys, Antarctica produces a modern analog for Antarctic paleolake carbonates. Lake Fryxell contains a steep oxycline in the photic zone, where dissolved oxygen falls from supersaturation to zero. In the lake’s benthic mi...