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Latest Flood basalt Stories

Lava Formations In Western US Linked To Tear In Giant Slab Of Earth
2012-02-17 04:04:00

Scripps scientists propose mass melting as new force behind volcanic activity in Columbia River region Like a stream of air shooting out of an airplane's broken window to relieve cabin pressure, scientists at Scripps Institution of Oceanography at UC San Diego say lava formations in eastern Oregon are the result of an outpouring of magma forced out of a breach in a massive slab of Earth. Their new mechanism explaining how such a large volume of magma was generated is published in the Feb....

Earth’s Largest Extinction Event - Was It Caused By Siberian Volcanism?
2012-01-10 05:57:28

Around 250 million years ago, at the end of the Permian geologic period, there was a mass extinction so severe that it remains the most traumatic known species die-off in Earth´s history. Although the cause of this event is a mystery, it has been speculated that the eruption of a large swath of volcanic rock in Russia called the Siberian Traps was a trigger for the extinction. New research from Carnegie´s Linda Elkins-Tanton and her co-authors offers insight into how this volcanism...

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2011-07-28 07:55:00

Geological history has periodically featured giant lava eruptions that coat large swaths of land or ocean floor with basaltic lava, which hardens into rock formations called flood basalt. New research from Matthew Jackson and Richard Carlson proposes that the remnants of six of the largest volcanic events of the past 250 million years contain traces of the ancient Earth's primitive mantle"”which existed before the largely differentiated mantle of today"”offering clues to the...

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2011-07-25 08:35:00

Nature of mysterious hot spot revealed by "photogeology" By Diana Lutz, Washington University in St. Louis Analysis of new images of a curious "hot spot" on the far side of the Moon reveal it to be a small volcanic province created by the upwelling of silicic magma. The unusual location of the province and the surprising composition of the lava that formed it offer tantalizing clues to the Moon's thermal history. The hot spot is a concentration of a radioactive element thorium sitting between...

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2010-03-23 12:05:00

Volcanic activity more than 200 million years ago may have helped dinosaurs become and remain the world's dominant species by causing the mass extinction of rivals, researchers claim in a recent study. The paper, which was completed by a five-person team of researchers from the United States and Taiwan and published in the Proceedings of the National Academy of Sciences (PNAS), suggests that it was mass volcanic eruptions that wiped out the crurotarsans, the crocodile-like creatures that were...

2008-09-19 03:00:25

By Jolley, David W Widdowson, Mike; Self, Stephen Abstract: Research from biological and geological sources has highlighted the role of volcanoes in the outgassing of P, and thermal fixation and subsequent atmospheric oxidation of NO^sub x^ in volcanic environments. The impact of these nutrient fluxes on biological systems has been demonstrated on present-day Hawai'i, and here we consider the impact on the plant communities within a large igneous province (LIP). The Miocene Columbia River...

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2008-07-14 10:22:09

For the first time, researchers have taken a detailed look at what lies beneath all of Iceland's volcanoes "“ and found a world far more complex than they ever imagined.  They mapped an elaborate maze of magma chambers - work that could one day help scientists better understand how earthquakes and volcanic eruptions occur in Iceland and elsewhere in the world. Knowing where magma chambers are located is a key first step to understanding the chemical composition of the molten rock...

2008-03-20 14:46:32

Scientists reported on Thursday that they believe a series of volcanic eruptions in modern day India may have been the cause of mass extinctions of species including dinosaurs over the last 545 million years. The eruptions, which formed "flood basalts," hurled large amounts of sulfur into the atmosphere 65 million years ago during the Cretaeceous period and resulted in damages to the Earth's climate, according to researchers. These eruptions are one of two primary explanations for a series of...

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2006-03-09 09:00:52

University scientists suggest extraterrestrial theories are flawed and that more down to earth factors could have accounted for past mass extinctions Leicester -- Earth history has been punctuated by several mass extinctions rapidly wiping out nearly all life forms on our planet. What causes these catastrophic events? Are they really due to meteorite impacts? Current research suggests that the cause may come from within our own planet "“ the eruption of vast amounts of lava that brings...

2005-06-03 19:30:21

Boulder, Colo. - The June issue of GEOLOGY covers a wide variety of potentially newsworthy subjects. Topics include: discovery of 21 Martian river channels and estimates of their discharge and runoff production; evidence for olivine-rich bedrock on Mars; regional dynamics of global climate change; a challenge to the mantle plume hypothesis; constraints on late Neoproterozoic glaciations; new modeling of pyroclastic currents and possibilities for human survival in 79 A.D. Pompeii; the...