New insight into the dynamic development of the Southern Alps, New Zealand, from detailed thermochronological investigation of the Mataketake Range pergmatites

Abstract

This paper is part of the special publication No.154, Exhumation processes: normal faulting, ductile flow and erosion (eds: U.Ring, M.T. Brandon, G.S. Lister and S.D. Willett). The Southern Alps are an actively developing mountain range resulting from continuing oblique continent- continent collision between the Australian an Pacific plates through the South Island of New Zealand. The thermal histories of five granite pegmatites from the Mataketake Range in the southwest of this orogen are revealed here by U-Pb dating of zircon, K-Ar, 40Ar- 39Ar and Rb-Sr dating of muscovite, biotite and alkali feldspar, and fission-track dating of apatite and zircon. The constraint of these thermal historie..