Thursday, August 12, 2010

Journey South-West/Purnululu National Park Part III

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During the Devonian Era, 350 million years ago, a great marine deposit was formed here; it eroded away by the hundreds of millions of wet seasons to the present structure of domes, cliffs and gorges. One of the most obvious features of the sandstones is the alternating orange and black or grey banding. The darker bands are on the more permeable layers of rock. They allow moisture to seep through to the rock surface, promoting a dark algal growth. The less permeable layers in between are covered with a patina of iron and manganese staining, creating the orange bands. These outer coatings (the rock beneath is a whitish colour) help to protect the lower parts of the towers from erosion.

"Purnululu" means sandstone in the Kija Aboriginal language. The name Bungle Bungle comes either from the corruption of an Aboriginal name for the area, or from a misspelling of one of the common Kimberley grasses found here, bundle bundle grass.
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Mini Palms Gorge
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Painted Firetail Emblema pictum Male
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Piccaninny Creek Vista
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Pied Butcherbird Cracticus nigrogularis
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Polycarpaea spirostylis
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Ptilotus beardie
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Ptilotus exaltatus
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Ptilotus fusiformis
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Ptilotus macrocephalus
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Red Kangaroo Macropus rufus
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Scaevola amblyanthera var. centralisr
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Senna glutinosa
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Senna venusta
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Sida rohlenae
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Slender Gumleaf Grasshopper Goniaea vocans (leach)
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Southern Bungles Southern Vista
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Trichodesma zeylanicum
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Trichodesma zeylanicum Grove
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Trichosanthes cucumerina L
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Triumfetta plumigera
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Triumfetta rupestris
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Turkey Bush Calytrix exstipulata
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Waltheria indica
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White-winged Triller Lalage tricolour
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Wild Cotton Gossypium australe
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Zebra Gum Tree Shield Bug Poecilometis histricus
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