Search results
Results from the WOW.Com Content Network
Some eruptions cooled the global climate—inducing a volcanic winter—depending on the amount of sulfur dioxide emitted and the magnitude of the eruption. [ 1 ] [ 2 ] Before the present Holocene epoch, the criteria are less strict because of scarce data availability, partly since later eruptions have destroyed the evidence.
Knowledge of precise climatic events decreases as the record goes further back in time. The timeline of glaciation covers ice ages specifically, which tend to have their own names for phases, often with different names used for different parts of the world. The names for earlier periods and events come from geology and paleontology.
Unknown; may include climate changes, massive volcanic eruptions and Humans (largely by human overhunting) [4] [5] [6] Neogene: Pliocene–Pleistocene boundary extinction: 2 Ma: Possible causes include a supernova [7] [8] or the Eltanin impact [9] [10] Middle Miocene disruption: 14.5 Ma Climate change due to change of ocean circulation patterns.
The eruption’s potential impacts to weather and climate are starting to come into focus, even as the danger posed by the volcano persists and evacuations continue.
This is a sortable list of large eruptions that occurred between 11.7 Ka and 450+ Ma. Uncertainties as to dates and tephra volumes are not restated, and references are not repeated. The inclusion criteria here only covers entries with a Volcanic explosivity index (VEI) of 5 or greater.
According to the U.S. Geological Survey, there are around 1,350 potentially active volcanoes around the world outside of the continuous range of volcanoes as part of the Mid-Atlantic Ridge. In the ...
In a volcanic eruption, lava, volcanic bombs, ash, and various gases are expelled from a volcanic vent and fissure. While many eruptions only pose dangers to the immediately surrounding area, Earth's largest eruptions can have a major regional or even global impact, with some affecting the climate and contributing to mass extinctions.
A volcanic field is a localized area of the Earth's crust that is prone to localized volcanic activity. A volcanic group (aka a volcanic complex) is a collection of related volcanoes or volcanic landforms. Neutral: volcanic cluster and volcanic locus. In the Basin and Range Province the volcanic fields are nested. The McDermit volcanic field ...