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Volcanic Eruptions Wiped Out Ocean Life 94 Million Years Ago

Undersea volcanic activity triggered a mass extinction of marine life and buried a thick mat of organic matter on the sea floor about 93 million years ago, which became a major source of oil, according to a new study.

Volcanic eruptions helped shape planet Mercury: study

WASHINGTON (AFP) - Volcanic activity played a key role in shaping the planet Mercury's crater-riddled surface, and not asteroid impacts as previously theorized, according to US research published Thursday.

Volcanic Activity Shaped Mercury After All

A research team led by Brown University planetary geologist James Head has determined that volcanism played a central role in forming Mercury’s surface. The evidence of volcanic activity lends important insights into Mercury’s geologic history and appears in a special section describing the MESSENGER mission’s recent flyby of Mercury in the July 4 issue of Science.

Undersea Volcanic Eruptions Linked to Ancient Die-Off

A surge of undersea volcanic activity about 93 million years ago sapped the oceans of oxygen, triggering a mass extinction of marine life, a new study finds.

Undersea Volcanic Rocks Offer Vast Repository For Greenhouse Gas, Says Study

A group of scientists has used deep ocean-floor drilling and experiments to show that volcanic rocks off the West Coast and elsewhere might be used to securely imprison huge amounts of globe-warming carbon dioxide captured from power plants or other sources. In particular, they say that natural chemical reactions under 78,000 square kilometers (30,000 square miles) of ocean floor off California, Oregon, Washington and British Columbia could lock in as much as 150 years of U.S. CO

Crystals Improve Understanding Of Volcanic Eruption Triggers

The team, from Durham University and the University of Leeds, studied crystal formation from a volcano, in Santorini, in Greece, to calculate the timescale between the trigger of volcanic activity and the volcano's eruption.

Crystals Help Scientists Learn About Volcanic Eruption Triggers

The team, from Durham University and the University of Leeds, studied crystal formation from a volcano, in Santorini, in Greece, to calculate the timescale between the trigger of volcanic activity and the volcano's eruption.

Volcanoes on Mercury solve 30-year mystery

Low-iron volcanic plains filling the Caloris impact basin make a large pale-orange patch (marked "C") in this false-color image of Mercury. White arrows mark young smooth plains. Around the edge of Caloris and elsewhere lie small volcanic centers thought to form by explosive eruptions (black arrows). Widespread dark blue areas are older rocks that may be rich in the mineral ilmenite.

Santorini Volcano, Greece

One of the largest volcanic eruptions in the past 10,000 years occurred in approximately 1620 BC on the volcanic island of Santorini in the Aegean Sea. This astronaut photograph illustrates the center of Santorini Volcano, located approximately 118 kilometers to the north of Crete (not shown). Prior to 1620 BC, the island of Santorini, now known as Thera, was built up by layers of lava created by overlapping shield volcanoes, and it had experienced three significant eruptions that formed overlapping calderas, or collapsed magma chambers. Around 1620 BC, the fourth (and latest) major eruption created the present-day islands and caldera bay of Santorini Volcano. The caldera rim is clearly visible in this image as a steep cliff forming the western shoreline of the island of Thera.

Volcanic eruptions wiped out ocean life 93 million years ago

University of Alberta scientists contend they have the answer to mass extinction of animals and plants 93 million years ago. The answer, research has uncovered, has been found at the bottom of the sea floor where lava fountains erupted, altering the chemistry of the sea and possibly of the atmosphere.

Volcanic Activity Shaped Mercury After All

Scientists have long anguished over how little is known about Mercury, the innermost of the four terrestrial planetary bodies in our solar system. The gaps in knowledge covered such basic information as the planet's geology, how it was formed and evolved and whether its interior was still active.

Undersea volcanic rocks offer vast repository for greenhouse gas, says study

Deep-sea basalt region for CO2 burial. Red outline shows where water depth exceeds 2700 meters and sediment thickness exceeds 200 meters hatched areas show where sediment thickness exceeds 300 meters. Seamounts and areas near plate boundaries or cont ...

Technology Volcanic activity has played a central role in forging the surface of Mercury, scientists have said.

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Mercury's surface dominated by volcanic activity

Volcanism has played a more extensive role in shaping the surface of Mercury than scientists had thought. This result comes from multispectral imaging data gathered in January 2008 by MESSENGER, the latest spacecraft to visit the sun's innermost planet.

NASA International Space Station Imagery: Sentinel Volcanic Field

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Icelandic volcanoes help researchers understand potential effects of eruptions

Volcanic eruptions from the volcano Askja created the small crater Vti (foreground) and large lakes such as skjuvatn (background).

Brand-new view of volcanism on mercury

Washington - Volcanic activity has played a central role in forging the surface of Mercury, scientists said on Thursday based on data collected by a Nasa spacecraft that zoomed past the closest planet to the sun in January.

Dramatic volcanism forged Mercury's surface

WASHINGTON (Reuters) - Volcanic activity has played a central role in forging the surface of Mercury, scientists said on Thursday based on data collected by a NASA spacecraft that zoomed past the closest planet to the sun in January.

Dramatic volcanism forged Mercury's surface

WASHINGTON (Reuters) - Volcanic activity has played a central role in forging the surface of Mercury, scientists said on Thursday based on data collected by a NASA spacecraft that zoomed past the closest planet to the sun in January.

Inside Africa's PlayStation War

In the rugged volcanic mountains of the Congo the conflict known as Africa’s World War continues to smolder after ten grueling years. The conflict earned its name because at the height of the war eight African nations and over 25 militias were in the combatant mix. But more recently the conflict was given another name: The PlayStation War. The name came about because of a black metallic ore called coltan. Extensive evidence shows that during the war hundreds of millions of dollars worth of coltan was stolen from the Democratic Republic of Congo (DRC). The UN and several NGOs claim some of the most active thieves were the Rwandan military, several militias supported by the Rwandan government, and also a number of western-based mining companies, metal brokers, and metal processors that had allegedly partnered with these Rwandan factions.

Evidence of ancient water found on moon

A new analysis of volcanic glass recovered from the moon decades ago found the rocks contain traces of the constituents of water, challenging a long-held notion that the moon is perfectly dry.

Underwater Volcanoes Blamed for Mass Extinctions

More than 93 million years ago, researchers say undersea volcanic activity caused mass extinction in the worlds' oceans.

Volcanoes may be active under Arctic ice

U.S.-led scientists say they've discovered signs of volcanic activity under Arctic Ocean ice, defying assumptions about sea floor pressure and volcanoes.

Volcanoes May Be Active Under Arctic Ice

U.S.-led scientists say they've discovered signs of volcanic activity under Arctic Ocean ice, defying assumptions about sea floor pressure and volcanoes.

Up, Up and Away: Studying Volcanoes With Balloons

Researchers from Michigan Technological University took the first in situ measurements of volcanic gases from an erupting volcano, using controlled meteorological balloons.

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