2002/09/19 by M. A. House, M. Gurnis, Peter J.J. Kamp +1 · 3 citations
Earth and Planetary Sciences · #Bouguer anomaly #Cenozoic #Denudation #Geological and Geochemical Analysis #Geology #Gravity anomaly #High-pressure geophysics and materials #Paleontology #Seismology #Subduction #Tectonics #earthquake and tectonic studies
paper · doi:10.1126/science.1075328
openalex publication_date 2002/09/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23
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.