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Interpreting Ancient Climate Signals From Sedimentary Archives Of Lake Bosumtwi, Ghana, Stoney Qigao Gan

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Sedimentary archives contain rich climate signals from the Earth’s past. These signals are preserved and encrypted in different properties of sedimentary deposits, and can be proxies for local and regional climate characteristics. The objectives of this dissertation research are to explore new ways and methods of extracting and interpreting these climatic signals that are preserved in sedimentary archives. Sample sets analyzed in these studies were collected from scientific drill cores recovered from Lake Bosumtwi, Ghana, as part of a drilling campaign supported by the U.S. National Science Foundation and the International Continental Scientific Drilling Program.

Laminations in sedimentary profiles can …