Nelson Discussion Group

 
The AusIMM New Zealand Branch would like to invite you to the Nelson Discussion Group September Meeting with guest speaker Francesca Ghisetti speaking on ‘Quaternary and Active Faulting in the Moutere Depression and Nelson-Richmond urban area: New Evidence and Interpretations’.

Abstract:
The subsurface structure of the Moutere Depression, including part of the Waimea-Flaxmore Fault System in the NelsonRichmond urban area, is obscured by a thick Plio-Quaternary gravel sequence dominated by Moutere Gravel. We report on the data and interpretations of an ongoing collaborative research aimed at improving the knowledge of local seismic sources and the dating of fault activity. Re-interpretation of existing subsurface data, together with geological mapping of new exposures and morpho-tectonic mapping have been used to analyse the 3D geological structure in the depression. This study has identified Quaternary-active blind faults, including the reverse Ruby Bay-Moutere Fault, sub-parallel to the WaimeaFlaxmore Fault, and approximately located in the centre of the depression. This fault is capable of being reactivated in the present-day stress field, thus posing a significant hazard, particularly to the growing infrastructure of the urban areas.

 
About our speaker:
Francesca Ghisetti born in Italy and graduated in Geology at Catania University, with post-graduate studies in U.S.A. (Columbia University), France (Orsay University) and U.K. (Imperial College). As Full Professor of Structural Geology in Italy, research and teaching focused on field mapping, structural analysis and seismotectonics of the Apenninic chain, with implications for migration of crustal fluids and hydrocarbon systems. After moving to New Zealand (Visiting Professor at Otago University and Adjunct Professor at Canterbury University) her research and consulting (TerraGeoLogica) have focused on inversion tectonics in the South Island and Taranaki Basin, structural analysis of the subduction margin, and the seismo-tectonic setting of the Canterbury earthquake sequence.

 

Date: Friday 14th September 2018
Time: 5:00pm
Venue: Richmond Library
Constance Barnicoat Room
280 Queen Street
Richmond
Cost: Free for all to attend. Includes drinks and finger food.
Registrations: Please RSVP your interest to attend to Carol Foote by emailing CFoote@golder.co.nz

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