Mt Big St Peter - a photo on Flickriver

Mt Big St Peter

This prominent volcanic peak is within Minerva Hills National Park, immediately west of Springsure, Queensland.
On the geological timescale, this volcanic province is dated as Oligocene. The volcanics here are complex and have been broadly divided into a basal series of mafic lavas (some 70 m thick) overlain by a series of felsic volcanics ranging from trachyte to rhyolite as in Mt Big St Peter. The lower sequence has been dated at approximately 33 -34 million years and the upper sequence 28.5–27.5 million years.
The hot spot (Cosgrove Hot Spot) upon which these volcanics erupted has been traced from Cape Hillsborough volcanics province on the Queensland coast north of Mackay through the Peak Range (north of Emerald) to this location nearly 400kms away, and then all the way to Victoria and is now believed to be south of King Island, off the coast of Tasmania. This trace of extinct volcanoes extends for more than 2000kms and is the longest terrestrial line of volcanoes on one (the Australian Plate) tectonic plate in the world.
For more on the Cosgrove Hot Spot and the landscapes it formed see www.australiangeographic.com.au/topics/science-environmen...
The disturbed land in the foreground is an open-cut coal mine.

Taken in: Australia / Queensland / Wurba (show map)

Taken on: October 12, 2020

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Mt Big St Peter

volcanic legacy

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Springsure

Central Queensland

Australia

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Australia Plate

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Cosgrove Hot Spot

Bowen Basin

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Camera: Canon EOS 80D, f/16.0, 1/80 sec, 67mm, ISO 100 (more info) (hide info)

Camera:	Canon EOS 80D
Lens:	EF-S18-135mm f/3.5-5.6 IS USM
Aperture:	f/16.0
Exposure Time:	0.013 sec (1/80)
Focal Length:	67mm
ISO:	100
Exposure Bias:	0 EV
Flash:	Off, Did not fire
Exposure Program:	Aperture-priority AE
Exposure Mode:	Auto
Metering Mode:	Multi-segment
White Balance:	Auto
Color Space:	sRGB
Software:	Adobe Photoshop 24.4 (Windows)
Show full info

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