Development of the Australian-Antarctic depth anomaly

• Published in: Geochemistry, Geophysics, Geosystems
• Main Authors: Whittaker, Joanne M., Müller, R. Dietmar, Gurnis, Michael
• Format: Article in Journal/Newspaper
• Language: English
• Published: American Geophysical Union 2010
• Subjects: Antarctic; Australian-Antarctic Discordance; Pacific; Antarc*
• Online Access: https://authors.library.caltech.edu/21332/; https://authors.library.caltech.edu/21332/1/Whittaker2010p12204Geochem_Geophy_Geosy.pdf; https://authors.library.caltech.edu/21332/2/2010gc003276-fs01.pdf; https://resolver.caltech.edu/CaltechAUTHORS:20101213-141948692

The oceanic Australian-Antarctic Discordance (AAD) contains two unusual features: (1) N–S trending anomalously deep bathymetries and (2) rough basement morphologies in young (<~20 Ma) crust between 120°E and 128°E. Models generally attribute AAD formation to underlying cold and/or depleted upper...