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Latest Igneous rocks Stories

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2009-09-21 07:50:00

Scientists have found the "Rosetta Stone" of supervolcanoes, those giant pockmarks in the Earth's surface produced by rare and massive explosive eruptions that rank among nature's most violent events. The eruptions produce devastation on a regional scale "” and possibly trigger climatic and environmental effects at a global scale. A fossil supervolcano has been discovered in the Italian Alps' Sesia Valley by a team led by James E. Quick, a geology professor at Southern Methodist...

2009-08-07 18:12:26

 Scientists have placed high-tech "spiders" inside and around the mouth of Mount St. Helens, one of the most active volcanoes in the United States. Networks such as these could one day be used to respond rapidly to an impending eruption. On July 14, 2009, these spider pods were lowered by cable from a helicopter hovering about 100 feet up (30 meters) and gently put in hot spots inside and around the volcano crater."This project demonstrates that a low-cost sensor network system can...

2009-08-06 15:06:04

When Alaska's Kasatochi Volcano erupted on Aug. 7, 2008, it virtually sterilized Kasatochi Island, covering the small Aleutian island with a layer of ash and other volcanic material several meters thick. The eruption also provided a rare research opportunity: the chance to see how an ecosystem develops from the very first species to colonize the island.Next week, a team of researchers organized by the U.S. Geological Survey and the U.S. Fish and Wildlife Service will visit Kasatochi to look...

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2009-07-08 09:40:30

U.S. scientists said they have determined the eruption of Indonesia's Toba volcano about 74,000 years ago triggered a decade-long severe winter. Previous studies suggested the massive eruption produced a 1,000-year episode of ice sheet advance, as well as a volcanic winter, which most likely would have drastically reduced the human population at the time. To investigate additional mechanisms that might have enhanced and extended the effects of the Toba eruption, Rutgers University Professor...

2009-07-02 08:00:00

VANCOUVER, July 2 /PRNewswire-FirstCall/ - Anglo Platinum Limited ("Anglo Platinum") (JSE: AMS) and Anooraq Resources Corporation ("Anooraq") (TSXV: ARQ; NYSE Amex: ANO; JSE: ARQ) announces that all of the conditions precedent to the acquisition by Anooraq of an effective 51% interest in the Lebowa Platinum Mine from Anglo Platinum have been fulfilled. The transaction has accordingly been implemented in accordance with the terms and conditions of the agreements entered into between, among...

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2009-06-08 07:30:00

Billions of years of history have been uncovered with a new technique that is helping scientists paint a picture of how Earth's continents were arranged. Scientists are using the new method to recover rare minerals from rocks and analyze their composition. In addition, researchers claim they can accurately date ancient volcanic rocks for the first time. The early landmasses can be pieced together by aligning rocks that have a similar age and orientation. Scientists say the new approach will...

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2009-06-07 15:59:26

Hawaii's Kilauea volcano seems to be active again, with molten lava moving around 300 feet under the crater's floor. The growth of the Halemaumau crater corroborates scientists' certainty that the lava is near the summit, said Janet Babb, a geologist and spokeswoman at the U.S. Geological Survey's Hawaiian Volcano Observatory. Park rangers have started allowing the overlook at the Jaggar Museum to stay open later in the evening to have capacity for the larger numbers of visitors to see the...

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2009-05-29 06:45:00

According to a new study, volcanic eruptions in what is now present-day China may have been the cause of mass extinction 260 million years ago. The Guadalupian Mass Extinction, which devastated marine life around the world, was preceded by eruptions in the Emeishan province of Southwest China, said Paul Wignall, paleontologist from the University of Leeds. According to the report, which appears in Friday's edition of the journal Science, the eruption in China unleashed nearly a half million...

2009-05-14 08:05:00

- Lebowa Technical Review completed - Revised Production Scheduling and Cost Estimates - Revised Lebowa Life of Mine plan (100%) Indicates Positive Net Present Value VANCOUVER, May 14 /PRNewswire-FirstCall/ - Anooraq Resources Corporation ("Anooraq" or the "Company") (TSXV: ARQ; NYSE Amex: ANO; JSE: ARQ) announces that, together with Anglo Platinum Limited ("Anglo Platinum") (referred to collectively as "the parties"), it has completed the technical review of...

2009-05-11 16:58:59

U.S. and French scientists say they have discovered the origin of carbon-based lavas erupting from a Tanzanian volcano. The researchers, led by the University of New Mexico, analyzed gas samples collected from inside the active crater of Tanzania's Oldoinyo Lengai volcano -- the only volcano that is actively producing carbon-based lavas. The geochemical analyses revealed a very small degree of partial melting of minerals in the Earth's upper mantle is the source of the rare carbon-derived...


Latest Igneous rocks Reference Libraries

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...

Eldfell
2014-04-08 12:54:37

Eldfell is an active stratovolcano that is located in Iceland on the island of Heimaey, in the Vestmannaeyjar archipelago. It reaches an elevation of 656 feet and was created during a volcanic eruption on the east side of the island in 1973. Its name means Mountain of Fire in the Icelandic language. Iceland is an area with a high frequency of volcanic activity because it is located on top of the Iceland hotspot and beside the Mid-Atlantic Ridge. So many eruptions occur here that it is thought...

Kīlauea
2014-04-08 12:33:13

Kīlauea is an active shield volcano that is located on the island of Hawaii and is located within Hawaii Volcanoes National Park. This volcano, which reaches an elevation of 4,091 feet, is one of five volcanoes that form the island and it is the most active. It is thought to be between 300,000 and 600,000 years old and is the second youngest of all the Hawaii volcanoes. It was formed when the Pacific tectonic plate moved over the Hawaiian hotspot and like other Hawaiian volcanoes, it began...

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Word of the Day
siliqua
  • A Roman unit of weight, 1⁄1728 of a pound.
  • A weight of four grains used in weighing gold and precious stones; a carat.
  • In anatomy, a formation suggesting a husk or pod.
  • The lowest unit in the Roman coinage, the twenty-fourth part of a solidus.
  • A coin of base silver of the Gothic and Lombard kings of Italy.
'Siliqua' comes from a Latin word meaning 'a pod.'
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