The National Seismic Hazard Model is the result of lots of work by scientists to indicate the likelihood of earthquakes happening in different parts of New Zealand. It is made with reference to the historic record of earthquakes that have happened across the country, combined with research into the rupture histories of many individual active […]
Precarious Boulders and Earthquakes Read More »
The Wairarapa Fault is one of New Zealand’s large active faults running along the eastern edge of the Rimutaka range from Palliser Bay north into the Wairarapa. It was responsible for the massive magnitude 8.2 earthquake that violently shook the lower North Island in 1855 in New Zealand’s largest historically recorded ‘quake. This Google Earth
Wairarapa Fault – the Biggest Rupture on Earth Read More »
This is a classic view of the Southern Alps from Lake Matheson on a still morning, showing the high peaks of Mount Tasman and Mount Cook.The Alpine Fault runs along the foot of the steep rangefront, extending right up the West Coast of the South Island. The mountains are therefore part of the Pacific Plate
Stepping Over the Boundary Read More »
Simon Cox GNS Science M. McSaveney GNS Science Slip Stream is a tributary to the Dart River in the South Island of New Zealand. There has been an active landslide here for several thousand years, periodically sending down lobes of debris to gradually build up a large fan in the Dart Valley. There was
The Dart Landslide Read More »
Photo: J.Thomson The windswept coastline between Wellington Harbour and Palliser Bay forms the southern tip of the Rimutaka Ranges. These hills themselves are an extension of the axial ranges that stretch the length of the North Island. This is the view east from Baring Head towards Turakirae Head. In good weather, this rugged environment isthe
On my way back to civilisation from Tama Lakes, I decided to take a detour to visit Saddle Cone, ( GeoTrip page here: www.geotrips.org.nz/trip.html?id=53 ) a small isolated crater on the northern slopes of Ruapehu. You can see the tilted rim of the cone in the centre of the photo: The second image is looking
Climbing Ngauruhoe from the South is well off the tourist route, and involves scrambling up unstable blocks of lava for about 700 vertical metres up the face of the cone. I chose to go up more or less up the centre of the view you can see here, and it took me about an hour
Ngauruhoe’s Far Side Read More »
Last weekend I went to camp and tramp in the Tama Lakes area on the saddle between Ruapehu and Ngauruhoe. These lakes were created by several explosion craters within the last ten thousand years giving them a circular or crescent form. The landscape is covered with blocks of lava and scoria as well as some
Last week I was in Hawkes Bay with geologist Kyle Bland, who led a field trip for teachers, students and parents of Crownthorpe School. Hawkes Bay geology is a story of uplift along fault lines, combined with rapid erosion and deposition by rivers flowing from the inland mountain ranges. This story is etched into the
A dynamic landscape in Hawkes Bay Read More »
Last week I spent some time on Ruapehu with Bruno Cedat, a french documentary maker who is making a film about the geology and landscapes of New Zealand in collaboration with GNS Science. During the making of his film he has participated in challenging outdoor adventures such as climbing, caving and kayaking in a variety of
Filming on Ruapehu Read More »