The Painted Cliffs of Maria Island

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The beautifully patterned sandstone rocks of Painted Cliffs are one of Maria island’s most popular attraction. The mountainous island located in the Tasman Sea, off the east coast of Tasmania, Australia, was once a penal colony for convicts who committed offences against the French colonists. Today, the entire island and the ocean around is a national park full of birds, animals and marine life.

The Painted Cliffs are located at the end of Hopground beach. The wonderful patterns on the exposed rocks along the shore were caused by ground water percolating down through the porous sandstone rocks and leaving traces of iron oxides, which have stained the rock formation. The regular patterns of red, orange and yellow bands and rings are due to fractures, joints and layers present within the sandstone.

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Photo credit: www.abc.net.au

The iron in the groundwater probably came from two prominent hills known as Bishop and Clerk and Mt. Maria, located at the highest point of Maria island. These peaks are composed of iron-rich dolerite rocks that weathered over millions of years ago when the climate was monsoonal, contributing to the iron-oxide staining on the Painted Cliffs.

Aside from the painted patterns, weathering of the rocks by salt crystal from sea spray have created a beautiful honeycomb pattern. Rock fragments moved around by the water have gradually worn small potholes and notches into the cliff face, eventually resulting in the undercutting of the cliff.

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Photo credit: exploringtheearth.com

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Photo credit: Markus M/Flickr

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Photo credit: Kristina D.C. Hoeppner/Flickr

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Photo credit: Kristina D.C. Hoeppner/Flickr

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Photo credit: Kristina D.C. Hoeppner/Flickr

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Photo credit: Tim Cooper/Flickr

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Photo credit: Kristina D.C. Hoeppner/Flickr

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Photo credit: Kristina D.C. Hoeppner/Flickr

Sources: www.parks.tas.gov.au / Wikipedia / Exploring the Earth

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1 comment:

  1. What French colonist????? "Lt. Governor Arthur established a penal settlement at Darlington (Maria Island) in 1825 for convicts who committed offences in the colony, but whose crimes were not 'so fragrant a nature' that they should be banished to Macquarie Harbour." "Frequent escape attempts, allegations of laxity of discipline and the opening of Port Arthur led to the decision to abandon the settlement in 1832." " A second period of convict settlement at Maria Island began in 1842. Under the probation system of the 1840s convicts were withdrawn from private service and congregated in government stations. Probation stations were established at Darlington (1842 - 1850) and Point Lesueur (1845 - 1850). Agricultural work largely kept the men busy, there being over 400 acres of crops needing attention."

    from www.parks.tas.gov.au website

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