Deep time global seawater (SST & SSC) records and far-field climatic & sealevel changes

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The Paleozoic (from 542 to 251 million years ago) was a time of extraordinary events and geologic upheaval such as the extraordinary radiation of life, extraterrestrial impacts and mass extinctions, all punctuated by both alpine and continental glaciations. The study proposes to collect proxy material (i.e. brachiopods and trilobites) and examine the geochemical evidence (trace and isotope chemistry) to characterize these events. Material for this project will come from two major sources, one being carbonates deposited on seamount Japan during the Paleozoic reflecting Panthalassic Ocean (precursor Pacific) oceanography and from large and continuous successions at the North American continental margin. The latter localities are unique and important in that the successions are sedimentologically & stratigraphically well defined in the context of Paleozoic biogeography.