Retrieved 12 May Cambridge University Press. ISBN Retrieved 2 June PMID Retrieved 25 February Planet Corroboree. NSW National Parks. Retrieved 27 October Retrieved on 4 November Retrieved 6 November Lonely Planet. Retrieved on 17 December Discover Australia's National Parks. Mountains in New South Wales , Australia. Brumlow Tops 1, m or 5, ft Polblue 1, m or 5, ft Barrington 1, m or 5, ft Careys Peak 1, m or 5, ft Eremeren Point 1, m or 5, ft Royal 1, m or 3, ft Allyn 1, m or 3, ft Cabrebald 1, m or 3, ft Ben Bullen Gunama Lumeah.
Summit 1, m or 3, ft Sugarloaf m or 1, ft Bulahdelah Manning. The volcano then became more violent and acid rocks were extruded, sometimes explosively, from the vents.
Rhyolites, volcanic 'glass', agglomerates and tuffs were included in this group. The rhyolites are particularly resistant to erosion in this environment and can be seen as the cliffs on the high plateaux forming the western half of the caldera rim.
Deep gorges have been worn in the rhyolites, particularly by the streams that flow into the Richmond Valley and into Queensland. Spectacular waterfalls can be found at the heads of these gorges where the streams plunge in the vicinity of metres over the rhyolite cliffs.
Imposing examples of these falls can be seen at Purlingbrook , Minyon and Tuntable. Interesting rock overhangs sometimes called caves Bushrangers Caves at the head of the Numinbah Valley are perhaps the best example of this phenomenon.
The final phase of volcanic activity was a relatively quiet series of basaltic lava flows. The rocks extruded during this period of activity have been called Blue Knob basalts and form a capping on the high plateaux of Springbrook , Lamington , the Tweed Range , and the Nightcap Range. Like the Lismore basalts on the lower slopes these rocks weather to fertile red soils that support dense stands of subtropical rainforest.
Small relic patches of temperate rainforest exist on some of the higher peaks, and contain some of the northernmost examples of the Antarctic beech , usually found from Barrington to the McPherson Ranges. These trees are among the most fascinating in the world.
Their name comes from one of the three main groups of Australian flora, the Southern or Antarctic group. The Lamington area is perhaps the most northern occurrence of the Antarctic beech in the world. Twenty million years of erosion has considerably altered the shape of the huge dome-shaped shield formed by the volcano.
These streams gradually eroded valleys and deepened them with the passage of time. They soon cut through the Blue Knob basalts and began forming gorges and associated waterfalls in the rhyolites. Two streams that drained directly into the rivers on the floor of the existing valleys in the Clarence Moreton Basin, the Richmond and Nerang , cut down more rapidly because of their steeper gradients.
These large valleys now separate the three plateaux bounded by rhyolite cliffs, and have become important transport lines in the area.
However the stream that cut most quickly into the shield was the Tweed River, mainly because it drained directly to the sea and therefore had the steepest gradient. Don't miss out on the headlines from Lismore. Followed categories will be added to My News. Researchers from the National Institute of Geophysics and Volcanology have made the discovery Colli Albani isn't extinct after all, it's just been a bit quiet of late. More than 30, years quiet in fact. So, with our own extinct volcano right on our doorstep it might be a good time to take a closer look at Mt Warning.
Before we go too far and you start to flee the area, our volcano last erupted 23 million years ago, is extinct and is in no danger of waking up and erupting everywhere any time soon.
My Chilean colleague Javier has told me about a volcano called Villarrica near the party town of Pucon. They become refuges for microbes who start one of the most important jobs on earth: building soil. Keeping the community together and the community voice loud and clear is what The Echo is about. More than ever we need your help to keep this voice alive and thriving in the community. Like all businesses we are struggling to keep food on the table of all our local and hard working journalists, artists, sales, delivery and drudges who keep the news coming out to you both in the newspaper and online.
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Great article that explains why this is such a beautiful and plentiful area. Volcanoes produce fertile soils. I used to live at the base of Greenhill at Ballarat University in central Victoria, which is a spout of the Buninyong Volcano. I only realised a few years ago that all of these were formed by the same hotspot, starting with a small one in the south and ending up on the biggest shield volcano here.
Here is a good graphic showing the results of the hotspot. Save my name, email, and website in this browser for the next time I comment. Sign in. Log into your account. Password recovery. November 12, Trending Now. Micro solar gridlocked by NSW govt red tape. Independent Lismore: community must be at the heart of every decision. Updated: July 15, By The Echo. July 15, Latest News. Local News The Echo - November 12, 0.
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