Circum-Superior Belt event in Australia and 1,860 million year old magmatism of the Mashonaland event in Africa. The other questionable suggestion related to the Circum-Superior Belt is the existence of a suggested 1,900 million year old global superplume event. The long Labrador Trough, extending from Ungava Bay through Quebec and Labrador, includes two volcano-sedimentary series, the first ranging from 2,170 to 2,140 million years old and second ranging from 1,883 to 1,870 million years old. This magmatism is considered to have formed as a result of back-arc volcanism. The youngest magmatic series (1883-1870 Ma) contains 1,880 million-year-old carbonatites and lamprophyres. 1,883 to
2010 eruptions of Mount Merapi suffering from serious depression and anxiety, while one man had committed suicide, reportedly due to stress. On Thursday, 18 November the Australian Government Department of Foreign Affairs issued a second update to their 11 November travel advisory bulletin acknowledging the announcement by Indonesian authorities on 15 November scaling back the 20 kilometre exclusion zone in some of the regions around Mount Merapi. The exclusion zone had been reduced to in the District (Kabupaten) of Magelang and to in the Districts of Klaten and Boyolali. The exclusion zone in the District of Sleman, towards the city of Yogyakarta, remained at .