Minyon Falls Rhyolite Member

The Minyon Falls Rhyolite Member is a geologic member in the far north east of New South Wales, Australia. This formation is up to 500 metres thick. Formed from a volcanic lava flow some 20 million years ago in the Cenozoic, it is part of the Nimbin Rhyolite of the Lamington Volcanics. Constituents include porphyritic and non porphyritic rhyolite, obsidian, pitchstone, tuff, and agglomerate. It may be viewed at Minyon Falls.Brunker, R.L., Tweedale, G., 1972, Tweed Heads, New South Wales, 1:250 000 geological series map. Sheet SH/56-03, 1st edition., Geological Survey of New South Wales, 1v

See also Tweed Volcano

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