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News articles about "Sediments"

Rethinking wetland restoration: Smaller wetlands more valuable than previously thought

Most efforts to protect and restore wetlands mistakenly focus on preserving only total wetland area with no consideration of ecosystem services provided by different wetland types according to a new study from the University of ... - Read More

Archaea: Surviving in hostile territory

Many strange creatures live in the deep sea but few are odder than archaea primitive single celled bacteria like microorganisms Archaea go to great lengths eating methane or breathing sulfur or metal instead of oxygen ... - Read More

Ascension of marine diatoms linked to vast increase in continental weathering

A team of researchers including Rensselaer professor Morgan Schaller has used mathematical modeling to show that continental erosion over the last 40 million years has contributed to the success of diatoms a group of tiny ... - Read More

'Chemistry of Natural Resources' Focus of Plenaries at American Chemical Society Meeting

Problems producing biofuels the role of gas hydrates in energy production and how to supply clean safe water are the topics of three plenary talks at the 249th National Meeting & amp Exposition of the ... - Read More

Methane in Arctic lake traced to groundwater from seasonal thawing

Global warming may ramp up the flow of methane from groundwater into Arctic lakes allowing more of the potent greenhouse gas to bubble out into the atmosphere according to a new study led by researchers ... - Read More

Same forces as today caused climate changes 1.4 billion years ago

Natural forces have always caused the climate on Earth to fluctuate Now researchers have found geological evidence that some of the same forces as today were at play 1.4 billion years ago Fluctuating climate is ... - Read More

Early herders' grassy route through Africa: Old teeth show Lake Victoria wasn't tsetse fly habitat

A University of Utah study of nearly 2 000 year old livestock teeth show that early herders from northern Africa could have traveled past Kenya's Lake Victoria on their way to southern Africa because the ... - Read More

Lightning plus volcanic ash make glass

In their open access paper for Geology Kimberly Genareau and colleagues propose for the first time a mechanism for the generation of glass spherules in geologic deposits through the occurrence of volcanic lightning The existence ... - Read More

Scientists search for new ways to deal with U. S. uranium ore processing legacy

Researchers at the Department of Energy's SLAC National Accelerator Laboratory are trying to find out why uranium persists in groundwater at former uranium ore processing sites despite remediation of contaminated surface materials two decades ago ... - Read More

Fossils survive volcanic eruption to tell us about the origin of the Canary Islands

The most recent eruption on the Canary Islands at El Hierro in 2011 produced spectacularly enigmatic white floating rocks that originated from the layers of oceanic sedimentary rock underneath the island An international team of ... - Read More

Chemical analysis of ancient rocks reveals earliest record yet of Earth's atmosphere: Isotopic memory of atmospheric persistence

Chemical analysis of some of the world's oldest rocks by an international team led by McGill University researchers has provided the earliest record yet of Earth's atmosphere The results show that the air 4 billion ... - Read More

Mercury from gold mines accumulates far downstream

Researchers have determined that the health risks taken on by artisanal small scale gold miners extend far beyond the miners themselves Based on a study of gold mining operations in Peru the miners' practices not ... - Read More

Algae blooms create their own favorable conditions

Fertilizers are known to promote the growth of toxic cyanobacterial blooms in freshwater and oceans worldwide but a new multi institution study shows the aquatic microbes themselves can drive nitrogen and phosphorus cycling in a ... - Read More

Oil sand mining is not polluting Athabasca Delta, new sampling method reveals

A new study into the pre industrial baseline levels of heavy metals in sediment carried by the Athabasca River shows that emissions from the Alberta oil sands and other human activities have not yet increased ... - Read More

Radiochemistry Annex: It's Getting Hot in There

Released 24 Dec 2014 11 00 AM ESTSource Newsroom Department of Energy Office of Science more news from this source Contact Information Available for logged in reporters only Dec 25 2014 Daniel Kaplan and Peter ... - Read More

NASA Goddard instrument makes first detection of organic matter on Mars

The team responsible for the Sample Analysis at Mars SAM instrument suite on NASA's Curiosity rover has made the first definitive detection of organic molecules at Mars Organic molecules are the building blocks of all ... - Read More

Oil-dwelling bacteria are social creatures in Earth's deep biosphere

Oil reservoirs are scattered deep inside Earth like far flung islands in the ocean so their inhabitants might be expected to be very different but a new study led by Dartmouth College and University of ... - Read More

Breathing sand: New measurement technique detects oxygen supply to bottom of North Sea

New analytical methods show for the first time how the permeable sandy sediment at the bottom of the North Sea is supplied with oxygen and which factors determine the exchange Because the metabolic rate is ... - Read More

Evidence for huge mountains that fed early life discovered

Scientists have found evidence for a huge mountain range that sustained an explosion of life on Earth 600 million years ago The mountain range was similar in scale to the Himalayas and spanned at least ... - Read More

Scientists find ancient mountains that fed early life

Scientists have found evidence for a huge mountain range that sustained an explosion of life on Earth 600 million years ago The mountain range was similar in scale to the Himalayas and spanned at least ... - Read More
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