More than 80 Vesuvius eruptions were listed in a recent worldwide directory of volcanic activity. |
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One way to do just this would be to detect the on-going production of hydrocarbons such as propane which cannot be produced by volcanic activity. |
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The warnings of an impending eruption came from vulcanology experts on the island, based on evidence of increased volcanic activity. |
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This caused thermal uplift of Scotland and the East Shetland platform and volcanic activity. |
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According to geologists, mountains are formed because of volcanic activity or the movement of the plates of the earth. |
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Among the phenomena that permanent observatories can study are climate variability and volcanic activity. |
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They are subject to periodic earthquakes and volcanic activity that can destabilize them. |
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Experts watching a recent spike in volcanic activity say a lava dome in the mountain's crater is growing. |
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Past and recent volcanic activity is mainly located on the summit craters and along fissure systems on the flanks of the mountain. |
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However, whereas volcanic activity ceased on the Moon several billion years ago, Io still has about a dozen volcanoes erupting at any one time. |
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Seismologists and volcanologists use both seismic and infrasonic signals to monitor volcanic activity. |
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At least three phases of volcanic activity are present within the Erenlerdag Volcanic Complex. |
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However, many of these basins experienced intense volcanic activity which may have caused local folding. |
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There is also abundant evidence for increased volcanic activity during the Little Ice Age. |
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Another Jovian moon, Io, surprised astronomers by indications of volcanic activity. |
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Mountain ranges are created by diverse tectonic processes, including convergence of plates and volcanic activity. |
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In practice pyroclastic and volcaniclastic rocks include all the products of extrusive volcanic activity except lava flows. |
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As volcanic activity slowed and oxygen output of plants declined, small-lunged dinosaurs had trouble adjusting. |
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The most important discussion of volcanic activity focuses on the Owens Valley, which is in fact an active rift valley. |
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All the islands were formed by volcanic activity and can be divided into atolls and high islands. |
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The lava flow sequences exposed along the main barrancos do not display any gaps in the volcanic activity. |
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This confirms that the tension fractures were formed during the volcanic activity. |
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However, this folding mechanism is thought to be related to the nearest volcanic activity. |
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At the local warning center a seismometer will provide accurate recordings of volcanic activity. |
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Thus with the water drained from the land, the subsequent volcanic activity in the Mesozoic and Cainozoic would be sub-aerial. |
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Seas closed, uplands emerged, volcanic activity took place, and the entire continental margin grew by the addition of these new terrains. |
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The presence of basalt and obsidian is a sign of volcanic activity and the instability of the earth's crust in this area. |
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Volcanologists now monitor the frequency of volcanic activity in an effort to predict eruptions. |
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The activity observed in 1994 occurred largely at the site of the 1998 eruption and may have indicated precursory volcanic activity at a site on the brink of an eruption. |
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You can take a fifteen minute dash by helicopter for an overall impression of the island before the machine lands for a closer look at the volcanic activity. |
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After the crust moves off the hot spot, the volcanic activity stops. |
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The majority of Fiji's islands were formed through volcanic activity starting around 150 million years ago. |
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Sale provides an overview of the Arctic's seismic and volcanic activity, rock types, snow, ice flows, icebergs, and glacial landforms. |
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There is no known volcanic activity on Mars so it is most likely the result of a meteoritic impact. |
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Evidence of underwater volcanic activity can be seen today on the neck of Llanddwyn Island in the form of pillow lavas. |
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Possible explanations include floods of liquid water, ice-based volcanic activity, or even some form of tectonic system. |
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One cause of the extinction event is speculated to be extended volcanic activity. |
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Throughout the Little Ice Age, the world experienced heightened volcanic activity. |
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The region lies near the intersection of geological plates, with heavy seismic and volcanic activity. |
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More volcanic activity formed Arthur's Seat in Edinburgh, among other hills. |
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The exclusion zone also includes two sea areas adjacent to the land areas of most volcanic activity. |
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The northern part of Montserrat has largely been unaffected by volcanic activity, and remains lush and green. |
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The locations of settlements on the island have been vastly changed since the volcanic activity began. |
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It is also possible that volcanic activity on Mars will occasionally melt subsurface ice, creating large temporary lakes. |
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At the same time, an intense volcanic activity left large quantities of granite. |
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The dip was triggered by a burst of volcanic activity that deposited new silicate rocks, which draw CO2 out of the air as they erode. |
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Hotspot volcanic island ridges are created by volcanic activity, erupting periodically, as the tectonic plates pass over a hotspot. |
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Climate change can reportedly trigger volcanic activity in sensitive areas by changing pressure of ice or seawater and extreme weather. |
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Earthquakes, hot springs, fumaroles, mud pots and geysers often accompany volcanic activity. |
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The warming may have been due to intense volcanic activity which produced large quantities of carbon dioxide. |
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Lanzarote is the easternmost island and one of the most ancient of the archipelago, and it has shown evidence of recent volcanic activity. |
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Most of the volcanic activity has centered, primarily, along the Terceira Rift. |
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The country is situated at the meeting point of the Eurasian Plate and the African Plate, leading to considerable seismic and volcanic activity. |
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Earth's atmosphere and oceans were formed by volcanic activity and outgassing that included water vapor. |
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Most of this salt was released from volcanic activity or extracted from cool igneous rocks. |
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There is also evidence of volcanic activity, even after the ice sheet had formed, in Marie Byrd Land and Alexander Island. |
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The pressure of the South American Plate to the east of the Caribbean causes the region of the Lesser Antilles to have high volcanic activity. |
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The early volcanic activity of major hotspots, postulated to result from deep mantle plumes, is frequently accompanied by flood basalts. |
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The Iceland hotspot is a hotspot which is partly responsible for the high volcanic activity which has formed the island of Iceland. |
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A type of rock called ignimbrite is found in some parts of the traps indicating explosive volcanic activity. |
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Increases in greenhouse gases, such as by volcanic activity, can increase the global temperature and produce an interglacial period. |
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The island of Mauritius is relatively young geologically, having been created by volcanic activity some 8 million years ago. |
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Ternate lies in a very active seismic region where active volcanic activity and frequent earthquakes are common. |
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Situated on the western fringes of the Pacific Ring of Fire, the Philippines experiences frequent seismic and volcanic activity. |
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Geothermal energy is a product of volcanic activity that the Philippines has harnessed more successfully. |
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The island of Isla Tortuga is one example of this ongoing volcanic activity. |
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Visitors can go snorkeling in the Waiopae Tidepools or take a dip in several warm-water springs that have emerged as a result of the area's constant volcanic activity. |
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Divergence between strepsirrhines and haplorhines is correlated with intense volcanic activity on the Lebombo Monocline in Africa about 180 million years ago. |
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Interbedded pyroclastic rocks vary from thin beds of fine tuff to thick units of breccia, and reveal some ongoing volcanic activity during the period of deposition. |
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This consists mainly of deposits of bedded volcaniclastic sandstone and siltstone, deposited rapidly in shallow water at a late stage during the volcanic activity. |
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Towards the end of, or after the cessation of the volcanic activity a large granite batholith was emplaced in stages beneath the volcanic rocks of the Lake District. |
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The tight fit and the concavity on the lower rocks made them extraordinarily stable, despite the ongoing challenge of earthquakes and volcanic activity. |
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Models are unable to reproduce the rapid warming observed in recent decades when only taking into account variations in solar output and volcanic activity. |
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The Tristan hotspot is a volcanic hotspot which is responsible for the volcanic activity which forms the volcanoes in the southern Atlantic Ocean. |
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The last volcanic activity occurred at Ciomadul about 30,000 years ago. |
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The majority of seamounts have already completed their eruptive cycle, so access to early flows by researchers is limited by late volcanic activity. |
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The Earth's Moon has no large volcanoes and no current volcanic activity, although recent evidence suggests it may still possess a partially molten core. |
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The deeper layer becomes oxygen starved and can become saturated with carbon dioxide, or other gases such as sulfur dioxide if there is even a trace of volcanic activity. |
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Although all three parts of the territory were formed by volcanic activity, only the Tristan da Cunha group of islands are volcanically active at the moment. |
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During this period north Wales was subject to volcanic activity. |
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The volcanic activity which created the Antrim Plateau also formed the eerily geometric pillars of the Giant's Causeway on the north Antrim coast. |
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The region experienced high volcanic activity and plate subdivisions, creating Madagascar, Seychelles, Antartica, Austrolasia and the Indian subcontinent basin. |
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