News tagged with sedimentary rock

Poisonous oceans delayed animal evolution

Animals require oxygen, but oxygenated environments were rare on early Earth. New research from University of Southern Denmark shows that poisonous sulfide existed in the oceans 750 million years ago making large areas of ...

dateOct 24, 2011 in Earth Sciences
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Fracking risks to ground water assessed

(Phys.org) —Extraction of "unconventional" gas from sedimentary rocks such as shale could provide a clean energy source and help some regions to become energy independent, but concerns have been raised about risks such ...

dateMay 17, 2013 in Environment weblog
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Greater tsunami threat identified

The shape of the seabed where the 2004 Sumatra earthquake struck may indicate that the strength of the underlying rocks added to the size of the resulting tsunami, according to new research.

dateJun 21, 2011 in Earth Sciences
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