Quantcast

Latest Igneous rocks Stories

Image 1 - Mercury Has Widespread Flood Volcanism
2011-09-29 13:23:32

NASA announced on Thursday that its MESSENGER spacecraft has found new evidence that flood volcanism has been widespread on Mercury. New data from the spacecraft reveals that 6 percent of Mercury's total surface is covered by volcanic plains. "Analysis of the size of buried ℠ghost' craters in these deposits shows that the lavas are locally as thick as 2 kilometers" (or 1.2 miles), James Head of Brown University, the lead author of one of the reports published in Science, said in a...

Scientists Concerned By Continued Eruptions At Alaskan Volcano
2011-09-18 04:41:53

  The two-month long, low-level eruptions occurring at a volcano in Alaska's Aleutian Islands have volcanologists worried that there could be a larger eruption forthcoming, Yereth Rosen of Reuters reported on Friday. The volcano causing concern is Cleveland Volcano (also known as Mount Cleveland), a 5,676-foot peak located less about 940 miles southwest of Anchorage. As previously reported here on RedOrbit, an eruption warning was issued by the Alaska Volcano Observatory in late...

Remote Alaska Volcano Resumes Dome Growth
2011-09-08 04:46:08

  Mount Cleveland, a volcano sitting on the western half of Chuginidak Island 115 miles west of Dutch Harbor and 950 miles southwest of Anchorage, is reported to be on watch status with an aviation color code of orange, according to the Alaska Volcano Observatory (AVO). Anchorage Daily News reported in July that a lava dome was forming in the crater of the volcano and reached a width of 140 feet in diameter. But on August 30, it appeared that the lava dome had reached a maximum...

Iceland Keeps Eye On Katla Volcano After Tremors
2011-09-07 09:33:03

  Iceland´s Katla volcano has been the site of small but increasing earthquake activity but scientists said Tuesday there is no immediate concern that the increased seismic activity will trigger a dangerous eruption. Earthquakes around Katla are common, increases in cluster earthquakes are not, reports the Associated Press (AP). “It´s one of the most feared volcanos, so we´re closely monitoring it,” Pall Einarsson of the University of Iceland told AP's...

astronomy
2011-09-03 06:13:20

  In his new book, ℠Deep-Sky Companions: The Secret Deep,´ Stephen James O'Meara presents 109 new objects for stargazers to observe. The Secret Deep contains many exceptional objects, including a planetary nebula whose last thermal pulse produced a circumstellar shell similar to the one expected in the final days of our Sun's life; a piece of the only supernova remnant known visible to the unaided eye; the flattest galaxy known; the largest edge-on galaxy in the heavens;...

Mount Etna Begins 12th Eruption Of Year
2011-08-30 09:44:46

  Italy´s famed volcano Mt. Etna has erupted for the twelfth time this year, spewing lava and ash into the upper atmosphere, according to an Associated Press report. Italy´s Civil Protection Agency says the nation´s geophysics and volcanology institute on Monday registered increased explosive activity by Etna, eight days after the latest eruption began, spewing out a significant amount of ash in a southeast direction early in the day but that the eruption tapered off...

095f69449d119063427f382342aee25a
2011-08-12 13:30:19

The 2010 ash cloud from Iceland's Eyjafjallajokull volcano that disrupted air travel in the UK and cost European businesses more than $2.6 billion was likely a once in a lifetime event, according to scientists, who have analyzed a record of past similar events stretching back into prehistory across northern Europe. Their analysis showed that past ash clouds like the one seen in 2010 occurred on an average of once every 56 years. A report of the findings has been published in the journal...

5a01292ad631a8828e431d0720c21719
2011-08-11 08:41:57

Sunken oceanic crust resurfaces from Earth's mantle after only 500 million years The recycling of the Earth's crust in volcanoes happens much faster than scientists have previously assumed. Rock of the oceanic crust, which sinks deep into the earth due to the movement of tectonic plates, reemerges through volcanic eruptions after around 500 million years. Researchers from the Max Planck Institute for Chemistry in Mainz obtained this result using volcanic rock samples. Previously, geologists...

2b29137f67623887d9ac8397461bbbb8
2011-08-10 11:15:00

US scientists from Oregon and New York, who have been monitoring the Axial Seamount, an undersea volcano located 250 miles off the Oregon coast, said on Tuesday that they have successfully predicted an eruption for the first time. The team of scientists forecast the eruption beginning about five years ago, predicting the volcano, which last erupted in 1998, would erupt again sometime before 2014. This marks the first successful prediction of eruption of an undersea volcano. During an...

7eccecad82f8c08c2e965db4d580cec2
2011-08-10 09:30:00

On the remote, uninhabited Chuginadak Island in Alaska, a volcano has begun erupting, but poses little danger to people or aircraft, officials said Tuesday. The Cleveland volcano is erupting with a slow effusion of magma, forming a lava dome. It is not an explosive eruption that generates large ash plumes, explains John Power, the scientist-in-charge at the Alaska Volcano Observatory. "So far, it's just lava as far as we can tell from our satellite imagery and the people who have managed to...


Latest Igneous rocks Reference Libraries

Mount Nyiragongo
2014-08-28 11:22:30

Mount Nyiragongo is an active stratovolcano that is located in the Democratic Republic of the Congo. This volcano is part of the Virunga Mountains and is located in Virunga National Park. It reaches an elevation of 11,385 feet and has a crater that reaches 1.2 miles in width. This crater typically holds a lava lake that has varied between 2,000 and 10,660 feet in depth. It is not known how long this volcano has been active, but at least 34 eruptions have been recorded since 1882. Mount...

Chaitén
2014-08-28 10:38:21

Chaitén is a volcanic caldera that is located in southern Chile that reaches an elevation of 3,681 feet. It is thought that this volcano once held a rhyolite obsidian lava dome that reached 3,156 in height, but this was destroyed after its most recent eruption in 2008. In the past, this volcano has released grey obsidian, which was used by pre-Columbian cultures to make many objects, some of which have been found 250 miles away from the volcano. Chaitén experienced the beginning of a new...

Hualālai
2014-04-10 12:06:55

Hualālai is a dormant shield volcano that is located on the island of Hawaii and is one of five volcanoes that form the island. It reaches an elevation of 8,271 feet and is thought to have emerged from the sea about 300,000 years ago, making it the third youngest volcano on the island. Its shape is rough compared to younger volcanoes and it holds three rift zones that are covered with over one hundred cinder cones and spatter cones. Although it does not hold a caldera at its summit, it does...

Kohala
2014-04-10 10:03:58

Kohala is an extinct shield volcano that is located on the island of Hawaii and reaches an elevation of 5,480 feet. It is one of five volcanoes that comprise the island of Hawaii and is thought to be about one million years old, although it only emerged from the sea about 500,000 years ago. Because its last eruption is thought to have occurred about 120,000 years ago, based on studies conducted on hardened lava flows, this volcano is not thought to pose a threat to inhabitants on the island....

Askja
2014-04-09 16:13:20

Askja is an active stratovolcano that is located in the isolated central highlands in Iceland. It reaches an elevation of 4,974 feet and its name literally means caldera, or box, in the Icelandic language. The area can only be reached during a period of a few months and because it located in the rain shadow of the Vatnajökull glacier to the northeast, it only receives 17.7 inches of rain per year. One of Askja’s smaller craters holds a lake known as Öskjuvatn, which is often frozen over...

More Articles (16 articles) »
Word of the Day
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.