2010 eruptions of Mount Merapi possible widening of the exclusion zone was considered to have the potential to affect the availability of departure options. It was noted that there had been a deterioration in air quality in Yogyakarta from ash falling on the city. It was cautioned that volcanic ash could cause breathing difficulties, particularly for people with chronic respiratory ailments such as asthma, emphysema, or bronchitis. The Indonesian Social Welfare Minister, Salim Segaf Al-Jufri announced on 19 November that the government planned to end the emergency response period for the Mount Merapi eruption disaster on 24 November. "We will maintain the emergency response period
Circum-Superior Belt remain undated, indicating the existence of magmatic rocks with the same age as those of the Circum-Superior Belt is probable. It contains two large copper-nickel mining districts; the nickel-bearing Thompson Belt at the northwestern portion of the Superior craton and the Cape Smith Belt at the northern portion of the Circum-Superior Belt. The Circum-Superior Belt was formed 1,884 to 1,864 million years ago when the Superior craton was surrounded by mountain building processes, including the Trans-Hudson, New Quebec and Penokean orogenies. The major Trans-Hudson orogeny had its appearance when the Superior craton collided with the Rae-Hearne craton 1,900 to 1,800