WebThe Youngest Toba eruption was a supervolcano eruption that occurred around 74,000 years ago at the site of present-day Lake Toba in Sumatra, Indonesia.It is one of the Earth's largest known explosive eruptions.The Toba catastrophe theory holds that this event caused a global volcanic winter of six to ten years and possibly a 1,000-year-long cooling …

WebLake Toba (Indonesian: Danau Toba) (Toba Batak: ᯖᯀᯬ ᯖᯬᯅ) is a large natural lake in North Sumatra, Indonesia, occupying the caldera of a supervolcano.The lake is located in the middle of the northern part of the island of Sumatra, with a surface elevation of about 900 metres (2,953 ft), the lake stretches from to The lake is about 100 kilometres (62 miles) …

WebThe controversial Toba catastrophe theory, presented in the late 1990s to early 2000s, suggested that a bottleneck of the human population occurred approximately 75,000 years ago, proposing that the human population was reduced to perhaps 10,000–30,000 individuals when the Toba supervolcano in Indonesia erupted and triggered a major …

WebLa teoría de la catástrofe de Toba explica un hecho que se produjo en el norte de la isla de Sumatra, en Indonesia, hace aproximadamente 74 000 años, cuando un supervolcán situado en el lago Toba entró en erupción. [1] En 1993, la periodista científica Ann Gibbons postuló que se produjo un cuello de botella en la población en la evolución humana hace …

WebHistoric examples. The effects of volcanic eruptions on recent winters are modest in scale, but historically have been significant. Toba supereruption A proposed volcanic winter occurred around 71,000–73,000 years ago following the supereruption of Lake Toba on Sumatra island in Indonesia. In the following 6 years there was the highest amount of …

WebA caldera (/ k ɔː l ˈ d ɛr ə, k æ l-/ kawl-DERR-ə, kal-) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcano eruption.When large volumes of magma are erupted over a short time, structural support for the rock above the magma chamber is gone. The ground surface then collapses into the emptied or partially …

WebTerminology. The term "supervolcano" was first used in a volcanic context in 1949. Its origins lie in an early 20th-century scientific debate about the geological history and features of the Three Sisters volcanic region of Oregon in the United States. In 1925, Edwin T. Hodge suggested that a very large volcano, which he named Mount Multnomah, had existed in …

WebIn paleoanthropology, the recent African origin of modern humans, also called the "Out of Africa" theory (OOA), recent single-origin hypothesis (RSOH), replacement hypothesis, or recent African origin model (RAO), is the dominant model of the geographic origin and early migration of anatomically modern humans (Homo sapiens).It follows the early expansions …

WebAccording to the Toba catastrophe theory, 75,000 to 80,000 years ago, a supervolcanic eruption at what is now Lake Toba in Sumatra reduced the human population to 10,000 or even 1,000 breeding pairs, creating a bottleneck in human evolution, and killed three-quarters of all plant life in the northern hemisphere. However, there is considerable ...

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