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12°S 143°E Shelburne Bay Queensland by Degrees |
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Location: This confluence point is located on the abandoned Shelburne Station on the eastern side of Cape York. The actual site lies within an area of sand dunes and swamp swales and an approach to within 12.1 km only was possible. That was achieved by driving 17 km from the Telegraph Road along a disused station track to the abandoned Shelburne homestead then 13.8 km by quad bike. The site lies within Cook Shire; Bramwell Junction is the nearest settlement. The Landscape: The locality is of Quaternary (less than 2 million years) origin and is aeolian sands. The soils are a grey sandy loam with white silica sand patches on the ridges. The area reached is a seasonally swampy heath with low closed Melaleuca-dominated forest on the ridges. Cabbage Tree Palms (Livistona muelleri) and Swamp Mahogany (Lophostemon sauveolons) were also noted on the ridges. The area has been mined for silica sand in the past and those activities have modified the terrain. The area is drained by Harmer Creek and the MacMillian River which flow to Shelburne Bay. Feral pigs were the only fauna noted in the area.
The satellite image provided on Google Earth shows the actual confluence point located on a low forested sand ridge close to several small permanent waterholes.
Point information and photos: Tony Hillier, Kev Teys, Bruce Urquhart, Dale Farnell and John and Mary Nowill, 2008. WITHIN THE DEGREE SQUARE The Country: The area within the degree square ranges from the low coastal dune fields of the Shelburne Bay area to the rugged sandstone escarpments found in the Great Dividing Range in the southern portion. Elevations range from sea level to in excess of 400 m ASL in the Baldy Hills (including Kennedy Hill at 437 m ASL) in the south-east corner. Much of the area, however, has elevations of less than 150 m. The oldest geology in the area is the Cape Grenville volcanics and the intruded granites of the Baldy Hills area, both of which are of Carboniferous age (around 325 million years). The spine of Cape York (the Great Dividing Range) is composed mainly of sandstone of Early Cretaceous (or younger) age (141 to 98 million years). The coastal area is made up of Quaternary age (less than 2 million years) alluvium of various origins.
The heathland that extends in a band from the Great Divide to the Shelburne Bay hinterland is made up of a very dense coverage of low shrubs with Grevillias, Casuarinas and low Melaleucas dominating. This type is very difficult to penetrate because of its density. Fauna in the area is dominated by the prolific bird life. Some bird species have been identified at Moreton telegraph Station including the iconic Palm Cockatoo and the elusive Magnificent Rifle Bird. Agile Wallabies and Antilopine Wallaroos are commonly seen and both estuarine and fresh water crocodiles are present in the rivers.
A significant feature in the woodland landscape are the massive termite mounds, some as tall as 7 m. The termites that build these mounds consume only grass - great competition for the cattle grazing industry.
The land use of the area is mostly cattle grazing. The Climate: The climate of the area is classified as tropical savannah. It has a markedly dry winter. The closest climate station with representative statistics is Moreton Telegraph Station. Moreton Telegraph Station (site 027015) 1887-2008 (elevation 40 m ASL)
The highest temperature ever recorded at Moreton Telegraph Station was 40.0°C in October 1987 while the lowest temperature was 4.5°C in July 1984. Rainfalls also vary greatly. The highest total of 2223.7 mm was recorded in 1973 and the lowest total of 721.6 mm in 1902. Extremes of Nature: The area is subject to cyclones. The cyclone database maintained by the Bureau of Meteorology shows that 47 cyclones have tracked within 200 km of the confluence point between 1906-7 and 2006-7. Of these, 11 tracked within 50 km of the point. They included: an unnamed cyclone in March 1923; TC Dawn in February 1970; TC Bronwyn in January 1972; TC Stan in April 1979; TC Kathy in March 1984; TC Jim in March 1984; TC Jason in February 1987; TC Meena in May 1989; TC Kelvin in March 1991; TC Dennis in February 1996; and TC Ethel in March 1996. TC Monica also passed close to the point in April 2006.
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Last updated 22
April 2009. Web page done by Hayley Freemantle. |
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