| Magma (24) |  |
| Volcanic ash (5) | |
| Volcano eruption (10) | |
| Magma (24) | |
| Volcanic ash (5) | |
| Volcano eruption (10) | |
and remain standing even after volcanic eruptions end and lava levels fall again. In a new study published in the Journal of Volcanology
The recipe for Roman concrete was described around 30 BC by Marcus Vitruvius Pollio an engineer for Octavian who became Emperor Augustus. The not-so-secret ingredient is volcanic ash
whether volcanic ash would be a good large-volume substitute in countries without easy access to fly ash an industrial waste product from the burning of coal that is commonly used to produce modern green concrete.#
#Many countries don t have fly ash so the idea is to find alternative local materials that will work including the kind of volcanic ash that Romans used.
Saudi arabia has#mountains of volcanic ash#that could potentially be used in concrete Monteiro says. The Loeb Classical Library Foundation Harvard university and the Department of energy provided additional funding.
Using a type of bacteria that is typically found near active volcanoes researchers mix them into the concrete along with calcium lactate.
Using a type of bacteria that is typically found near active volcanoes, and near soda lakes like those near Wadi Natrun in Egypt, the researchers mix the bio material into the concrete as it is made.
when giant pools of magma greater than 100 cubic miles in volume and formed a few miles below the surface will erupt.
They occur when giant pools of magma greater than 100 cubic miles in volume form a few miles below the surface
The most recent super-eruption took place about 27,000 years ago in New zealand, well before humans kept records of volcanic eruptions and their aftermath.
and how rapidly these magma bodies develop and what causes them to eventually erupt. Despite considerable study, geologists are still debating how quickly these magma pools can be activated and erupted
with estimates ranging from millions to hundreds of years. Now a team of geologists have developed a new'geospeedometer'that they argue can help resolve this controversy by providing direct measurements of how long the most explosive types of magma existed as melt-rich bodies of crystal-poor magma before they erupted.
They have applied their new technique to two super-eruption sites and a pair of very large eruptions and found that it took them no more than 500 years to move from formation to eruption.
Timekeepers of short-lived giant magma bodies'appearing in the November issue of the journal Geology.
'The measurements that have been made indicate that this magma body doesn't currently have a high-enough percentage of melt to produce a super-eruption.
The researchers'geospeedometer is sized based on millimeter quartz crystals that grew within the magma bodies that produced these giant eruptions.
Quartz crystals are typically found in magmas that have a high percentage of silica. This type of magma is very viscous
and commonly produces extremely violent eruptions. Mount st helens was a recent example. When the crystals form
they often capture small blobs of molten magma known as blebs or melt inclusions. Blebs are initially round.
While the crystal is floating in hot magma, diffusion causes them to gradually acquire the polygonal shape of the crystal void that they occupy.
SCIENTISTS FIND MASSIVE NEW MAGMA CHAMBER UNDER YELLOWSTONE In the heart of Yellowstone national park a supervolcano releases around 45,000 metric tonnes of carbon dioxide each day.
But the magma chamber lying directly beneath its surface is considered not large enough to produce such levels,
Previous research found a relatively small magma chamber, known as the upper-crustal magma reservoir, directly beneath the surface in 2013 that measures 2
to calculate how long the crystal existed in the magma before the eruption, 'said Pamukcu. In addition, the researchers compared the results obtained with faceting with results obtained using other techniques.
as long as they erupt magmas that contain quartz crystals, 'said Pamukcu.''We are also confident that we can adapt these techniques to work with other minerals,
which will allow us to make similar timescale calculations for other types of magmas and volcanoes,
'VOLCANO'S GLOBAL DEVASTATION A volcanic eruption of a similar size to Laki eruption that hit Iceland in 1783 could have global impacts according to the new report.
#Biodegradable implant could simplify bone replacement surgery Combining cornstarch with volcanic ash clay to create a plastic for bone grafts could make the surgical process of bone replacement much simpler in the future.
or the detection of a volcanic eruption from a distance. nfrasound is the range of sound
Elsewhere, using a type of bacteria typically found near active volcanoes, researchers from Delft University mixed the bio material into the concrete along with calcium lactate.
they were carbonized in the Mount vesuvius volcanic eruption of A d. 79 and later discovered as charred clumps in the Villa of the Papyri in the ancient Italian city of Herculaneum beginning in 1752.
#Volcanic eruption on Cape verde Island A team from the GFZ German Research Centre for Geosciences is currently conducting research to support local partners
and Information system) the GFZ has started to observe the volcano eruption and to provide support on data acquisition and interpretation.
Thomas Walter. On one hand we are analysing data from the newest remote sensing satellites to develop models of the magma ascent path.
The satellite data which is acquired by the European space agency's Sentinel-1 satellite enables the measurement of ground movements associated with the volcano eruption.
and following the path of the magma from depth to its point of eruption. As a result the location of the ascent paths at depth explains well why the eruption site is off-centered with respect to the volcano summit.
which allows for regular updates on the ground movement and the magma ascent path beneath.
The magma's eruption rate has decreased but concerns have arisen about a recent increase of the explosive character of the eruption and related ash dispersion.
although volcanic eruptions and forest fires have been known to cause the moon to appear blue. This effect is caused by particulates like dust and smoke,
Considered one of Latin america most active volcanoes, Villarica has erupted on average once every 10 years. A major eruption in 1971 created a cloud of poisonous gases that killed approximately a dozen people.
#Flights Cancelled Due to Volcanic eruption in Japan According to the reports of the Japan Meteorological Agency Mount Aso blasted out lava debris along with plumes of ash shot into the sky up to
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