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News articles about "Isotopes"

Laser system allows determination of atomic binding energy of the rarest element on Earth

Atomic, System
The radioactive element astatine the name of which is derived from the Greek word for 'instability ' is so rare on Earth that it has not yet been investigated to any greater extent and as ... - Read More

Noble gases hitch a ride on hydrous minerals

Minerals, Minerals
The six noble gases do not normally dissolve into minerals leaving earth scientists to wonder how they are subducted back into the Earth Researchers at Brown have discovered that the lattice structure of minerals such ... - Read More

Fossil kangaroo teeth reveal mosaic of Pliocene ecosystems in Queensland

The teeth of a kangaroo and other extinct marsupials reveal that southeastern Queensland 2.5 5 million years ago was a mosaic of tropical forests wetlands and grasslands and much less arid than previously thought The ... - Read More

Ancient trapped water explains Earth's first ice age

Ice
Tiny bubbles of water found in quartz grains in Australia may hold the key to understanding what caused Earth's first ice age say scientists The Anglo French study published in the journal Nature analysed the ... - Read More

Ancient trapped water explains Earth’s first ice age

Ice
Tiny bubbles of water found in quartz grains in Australia may hold the key to understanding what caused Earth's first ice age say scientists The Anglo French study published in the journal Nature analysed the ... - Read More

Diet likely changed game for some hominids 3.5 million years ago

Carbon, carbon
A new look at the diets of ancient African hominids shows a game changer occurred about 3.5 million years ago when some members added grasses or sedges to their menus according to a new study ... - Read More

Acceleration of ocean denitrification during deglaciation documented

As ice sheets melted during the deglaciation of the last ice age and global oceans warmed oceanic oxygen levels decreased and denitrification accelerated by 30 to 120 percent a new international study shows creating oxygen ... - Read More

Billion-year-old water could hold clues to life on Earth and Mars

Mars
A UK Canadian team of scientists has discovered ancient pockets of water which have been isolated deep underground for billions of years and contain abundant chemicals known to support life This water could be some ... - Read More

Scientists demonstrate pear shaped atomic nuclei

Scientists at the University of Liverpool have shown that some atomic nuclei can assume the shape of a pear which contributes to our understanding of nuclear structure and the underlying fundamental interactions Most nuclei that ... - Read More

The Black Sea is a goldmine of ancient genetic data

sea
When Woods Hole Oceanographic Institution WHOI marine paleoecologist Marco Coolen was mining through vast amounts of genetic data from the Black Sea sediment record he was amazed about the variety of past plankton species that ... - Read More

Lava erupting on sea floor linked to deep-carbon cycle

sea
Scientists from the Smithsonian and the University of Rhode Island have found unsuspected linkages between the oxidation state of iron in volcanic rocks and variations in the chemistry of the deep Earth Not only do ... - Read More

Lava erupting on sea floor linked to deep-carbon cycle

sea
Scientists from the Smithsonian and the University of Rhode Island have found unsuspected linkages between the oxidation state of iron in volcanic rocks and variations in the chemistry of the deep Earth Not only do ... - Read More

Unique Chemistry Reveals Eruption of Ancient Materials Once at Earth's Surface

was subducted into the mantle more than 2.5 billion years ago and recycled into the mantle source of the Mangaia lavas ” said Rita Cabral the study’s primary author and a graduate student in Boston ... - Read More

Rethinking early atmospheric oxygen: Possibility of more dynamic biological oxygen cycle on early Earth than previously supposed

Oxygen, Oxygen, oxygen
A research team of biogeochemists at the University of California Riverside has provided a new view on the relationship between the earliest accumulation of oxygen in the atmosphere arguably the most important biological event in ... - Read More

Unique sulfur isotopes in plume lavas reveal deep mantle storage of archean crust

was subducted into the mantle more than 2.5 billion years ago and recycled into the mantle source of the Mangaia lavas ” says Rita Cabral the study’s primary author and a graduate student in BU’s ... - Read More

Ancient Earth crust stored in deep mantle

Scientists have long believed that lava erupted from certain oceanic volcanoes contains materials from the early Earth's crust But decisive evidence for this phenomenon has proven elusive New research from a team including Carnegie's Erik ... - Read More

Unique Sulfur Isotopes in Plume Lavas Reveal Deep Mantle Storage of Archean Crust

Founded in 1839 Boston University is an internationally recognized private research university with more than 30 000 students participating in undergraduate graduate and professional programs As Boston University’s largest academic division the College and Graduate ... - Read More

Geochemical method finds links between terrestrial climate and atmospheric carbon dioxide

Atmospheric
Nearly 34 million years ago   Earth underwent a transformation from a warm high carbon dioxide greenhouse state to a lower CO2 variable climate similar to the modern icehouse world Massive ice sheets grew across ... - Read More

Egyptian Wedding Certificate Key to Authenticating Controversial Biblical Text

from Augusta Honduras Now a major heritage site Augusta was founded as an English stronghold on Roatan Island from 1742 1748 and hosted a mix of English militia and indigenous Miskitu While historical documents provide ... - Read More

Discovery of 1,800-year-old 'Rosetta Stone' for tropical ice cores

Ice
Two annually dated ice cores drawn from the tropical Peruvian Andes reveal Earth's tropical climate history in unprecedented detail year by year for nearly 1 800 years Share This See Also Climate Ice Ages Global ... - Read More
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