She later earned a Ph.D in Planetary Science at Case Western Reserve University in 2004 studying carbonate minerals in Martian meteorite Allan Hills 84001 which suggest the sample came from a surface on Mars that underwent multiple distinct exposures to liquid water, rather than long term exposure in a body of water.
[3] In 2001 and 2004, Corrigan travelled to Antarctica as a member of ANSMET (Antarctic Search for Meteorites) teams.
[4] She is a co-author of 35 seasons of U.S. Antarctic meteorites (1976-2010): a pictorial guide to the collection (2014) ISBN 1-118-79838-4 (OCLC Number: 879851951).
Cari Corrigan was a postdoctoral fellow at National Museum of Natural History and Applied Physics Lab.
[5] In 2004, Corrigan was instrumental in the initial examination and classification of newly discovered Martian meteorite MIL03346, only the seventh known Nakhlite.