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Mount Warning (Aboriginal: ''Wollumbin''〔), a mountain in the Tweed Range in the Northern Rivers region of New South Wales, Australia, was formed from a volcanic plug of the now-gone Tweed Volcano. The mountain is located west-south-west of Murwillumbah, near the border between New South Wales and Queensland. Due to Mount Warning's proximity to Cape Byron, the Australian continent's easternmost point, it is the first place on mainland Australia to receive the sun's rays each day. Lieutenant James Cook saw the mountain from the sea and named it Mount Warning.〔〔 At he named a bit of land jutting out of the shoreline as point danger Fingal Head. Together they were named as a point of reference to warn other explorers that came afterward. ==Shield volcano== (詳細はvolcanic remnant of an ancient shield volcano, the Tweed Volcano, which would have been about above sea level or just under twice the height of the current mountain.〔The Caldera of the Mount Warning Shield Volcano. () New South Wales National Parks and Wildlife Service. 1990.〕 This volcano erupted around 23 million years ago.〔Knesel K. M., Cohen B.E., Vasconcelos P. M., and Thiede D.S. (2008) Rapid change in drift of the Australian plate records collision with Ontong Java Plateau, Nature vol 454, pages 754-757.〕 As the mountain's central vent cooled it shrank, forming a depression at the top that has greatly eroded.〔 Today the vast areas that were part of the volcano include many mountains and ranges at some distance from Mount Warning, and include the Border Ranges, Tamborine Mountain, the McPherson Range and both the Lamington Plateau and Springbrook Plateaus. The erosion caldera formed since this eruption is easily visible around the summit and forms the rim of the Tweed Valley. During the last stages of eruption, different and more resistant forms of lava that were cooler than those flows that created the shield volcano remained to form the current peak. The whole central Mount Warning massif was also pushed up by forces that remained active after lava eruptions had stopped.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mount Warning」の詳細全文を読む スポンサード リンク
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