title: Uplift in the Fiordland region, New Zealand: implications for incipient subduction.
abstract: Low-temperature thermochronometry reveals regional Late Cenozoic denudation in Fiordland, New Zealand, consistent with geodynamic models showing uplift of the overriding plate during incipient subduction. The data show a northward progression of exhumation in response to northward migration of the initiation of subduction. The locus of most recent uplift coincides with a large positive Bouguer gravity anomaly within Fiordland. Thermochronometrically deduced crustal thinning, anomalous gravity, and estimates of surface uplift are all consistent with approximately 2 kilometers of dynamic support. This amount of dynamic support is in accord with geodynamic predictions, suggesting that we have dated the initiation of subduction adjacent to Fiordland.
authors.affiliation: Division of Geological and Planetary Sciences, Caltech, Pasadena, CA 91125, USA. mhouse@gps.caltech.edu
authors.forename: M A
authors.initials: MA
authors.lastname: House
authors.forename: M
authors.initials: M
authors.lastname: Gurnis
authors.forename: P J J
authors.initials: PJ
authors.lastname: Kamp
authors.forename: R
authors.initials: R
authors.lastname: Sutherland