The Rotorua volcanic centre (RVC) forms a well-defined topographic depression ≈ 21 km by 22 km in diameter that is located along, and partly delineates, a structural embayment in the western margin of the central TVZ. The ...

Pseudotachylytes produced during coseismic slip are ubiquitous within the rocks of the Alpine Fault zone, New Zealand. Pseudotachylytes from three principal host rocks are described and characterised from field and ...

Ductile shear zones localise tectonic stresses and accommodate plate motions in the middle to lower crust and mantle, and control the strength of much of the Earth. Despite a common assumption that ductile shear zones ...

The latitudinal position and strength of the Southern Hemisphere westerly winds (SHWW) plays a critical role in global CO2 air-sea flux and the distribution of rainfall in the southern mid-latitudes. Strengthening and ...

When did the first ice form on Antarctica? Large, stable ice sheets started to appear in the Oligocene, but there may have been earlier, transient Palaeocene glaciations which left only brief traces in the sedimentary ...

This thesis is an investigation of metasomatism developed at the contacts of the Pounamu Ultramafics in the Turiwhate Survey District. The lithologies in the Turiwhate Survey District are characterized by a regional ...

The Late Quaternary Geology of the Glenorchy District, Upper Lake Wakatipu was investigated in terms of geomorphology, sedimentary facies distribution and characteristics and Quaternary deformation. Terraces that are ...

This thesis combines the results of field work, petrographic studies and mineralogical and geochemical data from plutonic rocks of the southern part of the Longwood Complex, Southland, New Zealand. Data presented here ...

In the Pipecleaner Glacier region, Southern Victoria Land metasediments of the Koettlitz Group have been intruded by nepheline syenites and granitoid plutons, of probable early Paleozoic age. The Radian Ridge nepheline ...