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Full-Text Articles in Paleobiology

Benthic Foraminifera As Tools Of Paleoceanography: Three Case Studies From The Late Cretaceous Of The North Pacific Ocean And Western Interior Seaway, And The Miocene-Pleistocene Of The Ross Sea, Antarctica, Serena N. Dameron Aug 2023

Benthic Foraminifera As Tools Of Paleoceanography: Three Case Studies From The Late Cretaceous Of The North Pacific Ocean And Western Interior Seaway, And The Miocene-Pleistocene Of The Ross Sea, Antarctica, Serena N. Dameron

Doctoral Dissertations

This dissertation is a widespread compilation of research covering vastly different times and locations. Despite these differences, the use of foraminifera helps to unravel their geologic history, revealing the paleoenvironmental, paleoclimatic, and paleoceanographic conditions of each location. What unites each study is how water mass, food supply and oxygen concentration play a critical role on the microfossil assemblage. This dissertation is broken up into three unique chapters. Chapter 1 reexamines some old ideas of how benthic foraminifera can be used as water mass indicators. A 13-myr record from Shatsky Rise in the paleo-central Pacific Ocean contains several instances water mass …


Middle To Late Pleistocene Paleoenvironmental Reconstructions From Lake El'gygytgyn, Arctic Russia, Mary Helen Habicht Oct 2019

Middle To Late Pleistocene Paleoenvironmental Reconstructions From Lake El'gygytgyn, Arctic Russia, Mary Helen Habicht

Doctoral Dissertations

Climate change is a major issue challenging the world today. Our global society faces rising temperatures, variable weather patterns, and rising sea level among other associated issues. Our action (or inaction) to address current changes will have serious ramifications for life on our planet in the coming centuries and millennia. In order to provide context for these present and future changes, we can utilize the paleo record to understand the natural variability of Earth’s climate system. One region of the world is changing more rapidly than the global average. Over recent decades, the Arctic has experienced warmer temperatures, reduced sea …