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Filtering by: Creator McCormick, Raynard Edward Committee Member Brook, Edward

Abrupt deglacial climate changes in the North Pacific and implications for climate tipping points

Creator:

Praetorius, Summer Kate

Abstract:

Paleoclimate archives have revealed abrupt climate events that are superimposed on more gradual climate changes throughout the last glacial and deglacial periods. The underlying causes of such rapid climate changes are still poorly understood, but the strong expression of these events in northern hemisphere records likely points to climatic mechanisms...

Resource Type:

Dissertation

Full Text:

, Kristen Brewster, Edward Brook, Maureen Davies, Shaun Marcott, Jennifer McKay, June Padman, Fredrick
Application of Cosmogenic Nuclides and Argon Geochronology to Paleoclimate, Paleomagnetism, and Paleohydrology

Creator:

Balbas, Andrea M.

Abstract:

This dissertation uses argon geochronology and cosmogenic nuclide surface exposure dating methods to address three research questions. The first question concerns a geomagnetic instability recorded in lava flows on the island of Floreana in the Galapagos Archipelago. Changes in the Earth’s magnetic field (intensity and orientation) occur frequently throughout geologic...

Resource Type:

Dissertation

Full Text:

., Nicolussi, K., McCormick, M., Frank, D., Trouet, V., Kaplan, J. O., Herzig, F., Heussner, K.-U., and