More compact eruptions possess transpired at Toba since. The little cone of Pusukbukit has formed as a southwestern margin of the caldera and lava domes. The most current eruption may have been at Tandukbenua as a northwestern caldera edge, since the current shortage of vegetation could be due to an eruption within the endure few hundred years.
Most elements of the caldera possess knowledgeable uplift owing to partial refilling of the magma chamber, for instance pushing Samosir Island and the Uluan Peninsula above the surface of the lk. ref: Villas in Bali The lake sediments on Samosir Is display to which it has been uplifted by minimum 450 metres because the cataclysmic eruption. This kind of uplifts are common in quite vast calderas, apparently owing to the upward pressure of unerupted magma. Toba is possibly the biggest resurgent caldera on Earth. Large earthquakes possess occurred in the neighborhood of the volcano much more recently, notably in 1987 together the southern shore of the lake at a depth of 11 km. Various earthquakes have transpired in the place in 1892, 1916, and 1920-1922.
Lk Toba is located close the Stellar Sumatran fault which runs together the centre of Sumatra in the Sumatra Fracture Zone. The volcanoes of Sumatra and Java are part of the Sunda Arc, a outcome of the northeasterly movement of the Indo-Australian Plate which is slipping under the eastward-moving Eurasian Dish. ref: Bali Villa The subduction district in that area is very energetic: the seabed close to the west coast of Sumatra has had various main earthquakes since 1995, including the 9.3 2004 Indian native Sea Earthquake and the 8.7 2005 Sumatra earthquake, the epicenters of which had been nearly 300 km from Toba.
On 12 September 2007, a magnitude 8.5 Earthquake shook the ground in Sumatra and was sensed in the Indonesian capital, Jakarta. The epicenter for this earthquake was not as close as the prior two earthquakes, but it is in a similar neighborhood.
Smaller eruptions possess happened at Toba since. ref: Bali Villas Accommodation The small cone of Pusukbukit has formed on the southwestern margin of the caldera and lava domes. The most current eruption may have been at Tandukbenua on the northwestern caldera edge, because the present shortage of vegetation could be owing to an eruption inside of the last few hundred years.