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Paleomagnetism and Geochemistry of Basalts in the North American Cordillera, Davis Strait, and Antarctica


Biasi, Joseph Anthony (2021) Paleomagnetism and Geochemistry of Basalts in the North American Cordillera, Davis Strait, and Antarctica. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/hbs7-aw47.


Chapter 1 is an introduction to the thesis and contains a brief summary on how the chapters relate to each other. In Chapter 2, we present new whole-rock geochemical data from the Brooks Range Ophiolite (BRO) together with new mineral chemistry data from the BRO, South Sandwich forearc, Izu-Bonin forearc, and Hess Deep. In Chapter 3, we use a combination of paleomagnetic data and thermal modeling to create a magnetic geothermometer (MGT) that can constrain the active transport lifetime of magmatic conduits and igneous intrusions. In Chapter 4, we present new stratigraphic and paleomagnetic data from Paleocene flood basalts on Baffin Island. In Chapter 5, we present new paleomagnetic and paleointensity data from the James Ross Island volcanic group, located on the Antarctic Peninsula.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Basalt, paleomagnetism, igneous, petrology, ophiolite, flood basalt, mass extinction, dike, north atlantic, large igneous province, volcano, volcanology, magnetic field
Degree Grantor:California Institute of Technology
Division:Geological and Planetary Sciences
Major Option:Geochemistry
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Asimow, Paul David (advisor)
  • Kirschvink, Joseph L. (advisor)
  • Bucholz, Claire E. (advisor)
Thesis Committee:
  • Rossman, George Robert (chair)
  • Asimow, Paul David
  • Bucholz, Claire E.
  • Kirschvink, Joseph L.
Defense Date:20 May 2021
Funding AgencyGrant Number
Geological Society of America/NSFAGeS2
National Geographic SocietyCP4-144R-18
Record Number:CaltechTHESIS:06022021-013516525
Persistent URL:
Biasi, Joseph Anthony0000-0003-1196-7877
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:14228
Deposited By: Joseph Biasi
Deposited On:02 Jun 2021 23:12
Last Modified:27 Oct 2021 22:09

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