Oxygen Isotope Current Events | Oxygen Isotope News
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Sulfur signature changes thoughts on atmospheric oxygen
Ancient sediments that once resided on a lake bed and the ocean floor show sulfur isotope ratios unlike those found in other samples from the same time, calling into question accepted ideas about when the Earth's atmosphere began to contain oxygen. view more (2006-08-24)
Diet, population size and the spread of modern humans into Europe
Accumulating carbon and nitrogen stable isotope data from fossil humans in Europe is pointing towards a significant shift in the range of animal resources exploited with the spread of modern humans into Europe 40,000 years ago. view more (2009-08-11)
Cooling Off Periods
Research by a team of Cambridge scientists has provided new clues about the first dramatic cooling of the Earth's climate 34 million years ago. The team, based at the University of Cambridge's Department of Earth Sciences said that ocean temperature drops were apparently not responsible for the rapid formation of ice in Antarctica. Carrie Lear,... view more... (2000-01-12)
Snail fossils suggest semiarid eastern Canary Islands were wetter 50,000 years ago
Fossil land snail shells found in ancient soils on the subtropical eastern Canary Islands show that the Spanish archipelago off the northwest coast of Africa has become progressively drier over the past 50,000 years. view more (2009-10-28)
Scripps/UCSD geophysicist among international team finding evidence of first plate tectonics
Identification of the oldest preserved pieces of Earth's crust in southern Greenland has provided evidence of active plate tectonics as early as 3.8 billion years ago, according to a report by an international team of geoscientists in the March 23 edition of Science magazine. view more (2007-03-23)
New isotope molecule may add to Venus' greenhouse effect
Planetary scientists on both sides of the Atlantic have tracked down a rare molecule in the atmospheres of both Mars and Venus. The molecule, an exotic form of carbon dioxide, could affect the way the greenhouse mechanism works on Venus. view more (2007-10-11)
Oxygen increase caused mammals to triumph, researchers say
The first, high resolution continuous record of oxygen concentration in the earth's atmosphere shows that a sharp rise in oxygen about 50 million years ago gave mammals the evolutionary boost they needed to dominate the planet. view more (2005-09-30)
Ancient oceans offer new insight into the origins of animal life
Analysis of a rock type found only in the world's oldest oceans has shed new light on how large animals first got a foothold on the Earth. view more (2009-09-10)
Radioactive crystals help identify and date ore deposits
Reddish-brown crystals of a radioactive mineral called monazite can act as microscopic clocks that allow geologists to date rock formations that have been altered by the action of high-temperature fluids, a process that frequently leads to the formation of rich ore deposits. view more (2006-08-01)
Drinking water in Gaza Strip contaminated with high levels of nitrate
Palestinian and German scientists have recommended to the authorities in the Gaza Strip that they take immediate measures to combat excessive nitrate levels in the drinking water. view more (2008-08-15)
Scientists discover cheap and environmentally friendly way to dispose of waste from nuclear power plants
Scientists from the University of Strathclyde, collaborating with an international team from Imperial College, Rutherford Appleton Laboratory(RAL), ITU (Karlsruhe) and the University of Jena, have successfully turned the radioactive isotope Iodine-129, a major waste product in the nuclear power industry, into the more friendly isotope Iodine-128... view more... (2003-08-13)
Nuclear physicists examine oxygen's limits
Physicists at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University have made a unique measurement of an exotic oxygen nucleus, leading scientists one step closer to deciphering the behavior of the element at its limits of existence. view more (2007-09-14)
Cosmic dust in terrestrial ice
For the last 30,000 years, our planet has been hit by a constant rain of cosmic dust particles. view more (2006-07-28)
The Rise of Oxygen Caused Earth's Earliest Ice Age
Geologists may have uncovered the answer to an age-old question - an ice-age-old question, that is. view more (2009-05-07)
Methane-eating microbes can use iron and manganese oxides to 'breathe'
Iron and manganese compounds, in addition to sulfate, may play an important role in converting methane to carbon dioxide and eventually carbonates in the Earth's oceans, according to a team of researchers looking at anaerobic sediments. view more (2009-07-10)
Explosive growth of life on Earth fueled by early greening of planet
Earth's 4.5-billion-year history is filled with several turning points when temperatures changed dramatically, asteroids bombarded the planet and life forms came and disappeared. view more (2009-07-09)
WHEELS WITHIN WHEELS: RARE ORBITAL ANOMALY MAY HAVE CAUSED GLOBAL COOLING 23 MILLION YEARS AGO
A rare coincidence of orbital cycles may have caused sudden global cooling 23 million years (Ma) ago, according to scientists, who used high resolution records and new techniques that allow astronomical calibration to be extended much further back in time. The late Oligocene to early Miocene Earth (20-26 Ma ago) experienced a complex climate... view more... (2001-06-21)
New laser technique may help find supernova
One single atom of a certain isotope of hafnium found on Earth would prove that a supernova once exploded near our solar system. view more (2009-08-12)
Friend or foe? - Viennese chemists optimise analysis of bones found at 7,000-year-old battlefield
Precise determination of strontium in bone material now makes it possible to distinguish between friend and foe on neolithic battlefields. A team of researchers at the University of Natural Resources and Applied Life Sciences, Vienna, has succeeded in using this sophisticated method to analyse skeleton finds. The interdisciplinary project,... view more... (2003-07-07)
Ancient Human Occupation of Britain
The University of Bradford's Department of Archaeological Sciences is taking part in a five-year study looking at when people first arrived in Britain, and the factors that led to their survival or local extinction. view more (2003-03-20)
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