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Stable Isotope Paleolimnology Of Barry Lake, Ontario, Canada Since Ad - 1268, Zijun Liu
Stable Isotope Paleolimnology Of Barry Lake, Ontario, Canada Since Ad - 1268, Zijun Liu
Electronic Thesis and Dissertation Repository
The paleolimnology of Barry Lake, SE Ontario, Canada is described using mineralogy, magnetic susceptibility, carbon:nitrogen ratio, mass accumulation rates, grain-size, δ18O and δ13C of authigenic calcite and mollusc aragonite, δ13C and δ15N of organic matter, and archival records. These sediments span the Medieval Warm Period (MWP), Little Ice Age (LIA), and human settlement. Interval I proxies (AD 1268-1350, MWP) indicate warmer and drier conditions and elevated lacustrine production. Interval II (AD 1350-1615) was cooler and wetter, with lower lacustrine production and low-oxygen conditions causing loss of shelly fauna. Interval III (AD 1615-1850, …