May 3, 2025
Matagouri, New Zealand’s South Island, Lake Wakatipu (Kawarau)
Fearon Hay Architects
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Matagouri, New Zealand’s South Island, Lake Wakatipu (Kawarau)
Fearon Hay Architects
The Great ACT-NSW-NZ Trip, 2023-2024 - St. Arnaud
After getting across Cook Strait without being shipwrecked (the weather was actually quite pleasant compared to some of the unholy gales that come through the gap, with the wind merely howling), we started our explorations of Te Waipounamu, the Island of Greenstone Waters. Pounamu is such a beautiful and useful stone that the Māori named the entire island after it.
Europeans called it South Island, or archaically New Munster. It covers 150,437 square kilometres, making it the world's 12th-largest island. We stopped at the Omaka Aviation Museum, which was worth it, but our first night was spent at St. Arnaud, formerly Rotoiti, a tiny alpine village.
It's certainly surrounded by mountains, and shows some really nice alpine geomorphology - hanging valleys left where subsiduary glaciers got cut off by the larger glaciers in the main valley, scree slopes where the greywacke of the mountains is disintigrating, and alpine lakes like Lake Rotoiti itself, formed when the glaciers retreated at the end of the last Ice Age and left behind huge piles of pebbles, gravel, and boulders to dam the meltwater.
On the other hand St. Arnaud has also been built right on top of a considerably larger geological feature - the Alpine Fault. This tectonic boundary between the Australian and Pacific Plates runs for over 600km, and is one of the fastest moving faultlines in the world, moving, on average, almost 40mm a year. Geological formations that originally straddled the fault are now 480km apart. Unfortunately most of that movement happens during huge earthquakes every few hundred years - the last big one on the Alpine Fault happens around 1717, rupturing 400km of the fault at once.
Over the last 12 million years a significant upwards element to the fault movement has been added, creating the Southern Alps. Most of what is now the South Island got pushed 20 kilometers up, whereupon New Zealand's weather promptly ground it 16 kilometers back down again. The assorted rubble forms the plains on the east and southern coast, or got swept north by prevailing currents on the west coast. Exposed basement rock on the South Island is mostly greywacke, or heavily metamorphised rocks such as schist from even deeper. That's where the greenstone originally formed.
Anyway, the next big quake will probably trash St. Arnaud completely, and cut every road across the mountains for months. Happily that didn't happen on this trip - @purrdence had enough problems with a cyclone cutting roads and trainlines last time.
The original forest around St. Arnaud is mostly Antarctic Beech (Nothofagus sp.) and forms the basis of a unique and seriously threatened ecosystem. I'll tell you all about that over the upcoming posts.
Here's some species I've covered before.
35 views, 3 likes, 2 loves, 0 comments, 0 shares, Facebook Watch Videos from Pihi Farms: Another day, more lambs in amongst the Matagouri.
173 views, 7 likes, 0 loves, 0 comments, 0 shares, Facebook Watch Videos from Chef Vaughan Mabee: Discaria toumatou, commonly called matagouri, is a ruthless thorny brutal plant endemic to New...
Discaria toumatou, commonly called matagouri, is a ruthless thorny brutal plant endemic to New Zealand the amount of blood I have gotten from this hunting I can’t remember. I don’t know why but I love it’s brutality in winter then changing into its beauty in spring.
शारदीय नवरात्रि आज #आठवां_ दिन नवरात्रि के नौ दिन मां दुर्गा के अलग अलग स्वरूपों की उपासना की जाती है, #मां_महागौरी को कोटि-कोटि नमन!🚩🚩 या देवी सर्वभूतेषु माँ गौरी रूपेण संस्थिता। नमस्तस्यै नमस्तस्यै नमस्तस्यै नमो नम:।। #jaimatadi #Durgaashtami #matagouri #navratri #garba #shubhpackersmovers @shubhpackersmovers https://www.instagram.com/p/CjPkAbOj2nQ/?igshid=NGJjMDIxMWI=
Matagouri
Matagouri, also known as matakoura (Discaria toumatou). These shrubs have vicious spines!