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Organic Geochemistry Of Non-Marine Permian-Triassic Mass Extinction (Ptme) Sections In The Sydney Basin, Australia, Simon George, Megan L. Williams, Justine Wheeler, Shirin Baydjanova, Nathan Camilleri, Benjamin Hanssen, Regina Maher, Uvana Meek, Adrian Nelson, Caiden O'Connor, William Porter, Brian G. Jones
Organic Geochemistry Of Non-Marine Permian-Triassic Mass Extinction (Ptme) Sections In The Sydney Basin, Australia, Simon George, Megan L. Williams, Justine Wheeler, Shirin Baydjanova, Nathan Camilleri, Benjamin Hanssen, Regina Maher, Uvana Meek, Adrian Nelson, Caiden O'Connor, William Porter, Brian G. Jones
Faculty of Science, Medicine and Health - Papers: part A
Most organic geochemical studies of the Permian-Triassic mass extinction (PTME) have utilised marine sections, and the boundary is readily identified by a negative carbon isotope excursion. It is now well understood from various locations around the world that the marine ecosystem collapse is accompanied by biomarker evidence for photic zone euxinia, including isorenieratane, crocetane and 2,3,6-aryl isoprenoids (e.g. Grice et al., 2005). Far fewer studies have been carried out on non-marine PTME sections, and in particular no biomarker studies have been carried out on Australian sections, despite there being extensive Permian and Triassic sequences in eastern Australia, notably in the …
Pliocene To Pleistocene Climate And Environmental History Of Lake El'gygytgyn, Far East Russian Arctic, Based On High-Resolution Inorganic Geochemistry Data, V Wennrich, P S. Minyuk, V Borkhodoev, Alexander Francke, B Ritter, Norbert R. Nowaczyk, M A. Sauerbrey, J Brigham-Grette, Martin Melles
Pliocene To Pleistocene Climate And Environmental History Of Lake El'gygytgyn, Far East Russian Arctic, Based On High-Resolution Inorganic Geochemistry Data, V Wennrich, P S. Minyuk, V Borkhodoev, Alexander Francke, B Ritter, Norbert R. Nowaczyk, M A. Sauerbrey, J Brigham-Grette, Martin Melles
Faculty of Science, Medicine and Health - Papers: part A
The 3.6 Ma sediment record of Lake El'gygytgyn/NE Russia, Far East Russian Arctic, represents the longest continuous climate archive of the terrestrial Arctic. Its elemental composition as determined by X-ray fluorescence scanning exhibits significant changes since the mid-Pliocene caused by climate-driven variations in primary production, postdepositional diagenetic processes, and lake circulation as well as weathering processes in its catchment. During the mid- to late Pliocene, warmer and wetter climatic conditions are reflected by elevated Si / Ti ratios, indicating enhanced diatom production in the lake. Prior to 3.3 Ma, this signal is overprinted by intensified detrital input from the catchment, …