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Preview: Brightsurf Science News :: Geochemistry News

Geochemistry Current Events and Geochemistry News from Brightsurf

Geochemistry Current Events and Geochemistry News Events, Discoveries and Articles from Brightsurf

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Underwater volcano behavior captured by timely scientific expedition

Wed, 14 Mar 18 00:02:10 -0700

Researchers got a rare opportunity to study an underwater volcano in the Caribbean when it erupted while they were surveying the area.

Stagnation in the South Pacific

Thu, 22 Feb 18 00:11:30 -0800

A team led by geochemist Dr. Katharina Pahnke from Oldenburg has discovered important evidence that the rise in atmospheric carbon dioxide levels at the end of the last ice age was triggered by changes in the Antarctic Ocean.

Radioactivity from oil and gas wastewater persists in Pennsylvania stream sediments

Fri, 19 Jan 18 00:04:50 -0800

More than seven years after Pennsylvania officials requested that the disposal of radium-laden fracking wastewater into surface waters be restricted, a new Duke study finds that high levels of radioactivity persist in stream sediments at three disposal sites. Radioactivity at these sites is 650 times higher than at unaffected sites upstream. The contamination comes from conventional, or non-fracked, oil and gas wastewater, which, under current state regulations, can still be treated and discharged into streams.

NASA team studies middle-aged sun by tracking motion of Mercury

Thu, 18 Jan 18 00:06:00 -0800

Like the waistband of a couch potato in midlife, the orbits of planets in our solar system are expanding. It happens because the Sun's gravitational grip gradually weakens as our star ages and loses mass. Now, a team of NASA and MIT scientists has indirectly measured this mass loss and other solar parameters by looking at changes in Mercury's orbit.

Heavy-petroleum fuels raising vanadium emissions

Fri, 15 Dec 17 00:16:10 -0800

Human emissions of the potentially harmful trace metal vanadium into Earth's atmosphere have spiked sharply since the start of the 21st century due in large part to industry's growing use of heavy oils, tar sands, bitumen and petroleum coke for energy, a new Duke study finds. These emissions now exceed those from all natural sources combined. Growing evidence suggests exposure to vanadium-rich aerosols can impair respiratory functions and exacerbate conditions such as asthma or COPD.

Shatter-proof mobile phone screens a step closer with ANU research

Mon, 11 Dec 17 00:02:20 -0800

An international study on glass led by The Australian National University (ANU) and the Institut de Physique du Globe de Paris in France could lead to the development of shatter-proof mobile phone screens.

Discovery about rare nitrogen molecules offers clues to makeup of life-supporting planets

Wed, 06 Dec 17 00:03:50 -0800

A new study on atmospheric nitrogen provides a clue about what geochemical signatures of other planets might look like, especially if they are capable of supporting life as we know it.

A series of fortunate events

Mon, 27 Nov 17 00:07:50 -0800

Volcanism is sometimes like food poisoning, where the Earth spews forth unstable material. New research from Michigan Technological University, University of Wisconsin Oshkosh and ETH Zurich shows that a significant pulse of volatile carbon was released from the Earth's mantle around 500 million years ago. But why?

A huge hydrogen generator at the Earth's core-mantle boundary

Wed, 22 Nov 17 00:10:40 -0800

The Earth is made up of a giant iron core, covered by a thick layer of silicate mantle and a thin coating of crustal rocks. A portion of water reacts with rocks and forms hydrous minerals that can transport deep into the mantle. Once they reach the bottom of the mantle, what will happen when water meets the iron core? A team led by Dr. Ho-Kwang Mao, director of HPSTAR published their answer in the National Science Review.

One in ten historic coastal landfill sites in England are at risk of erosion

Wed, 15 Nov 17 00:16:20 -0800

There are at least 1,215 historic coastal landfill sites in England, mostly clustered around estuaries with major cities, including Liverpool, London, and Newcastle on Tyne. An investigation by researchers, published today (Thursday Nov. 16) in WIREs Water finds that 122 sites are at risk of starting to erode into coastal waters by 2055 if not adequately protected.

When water met iron deep inside the Earth, did it create conditions for life?

Mon, 13 Nov 17 00:07:30 -0800

Reservoirs of oxygen-rich iron between the Earth's core and mantle could have played a major role in Earth's history, including the breakup of supercontinents, drastic changes in Earth's atmospheric makeup, and the creation of life, according to recent work from an international research team published in National Science Review.

Some Chinese coal ash too radioactive for reuse

Thu, 09 Nov 17 00:05:10 -0800

Many manufacturers use coal ash from power plants as a low-cost binding agent in concrete and other building materials. But a new study finds that coal ash from high-uranium deposits in China is too radioactive for this use. Some coal ash analyzed in the study contained radiation 43 times higher than the maximum safe limit set for residential building materials by the U.N. Scientific Committee on the Effects of Atomic Radiation.

Molybdenum in Wisconsin wells not from coal ash

Wed, 01 Nov 17 00:10:00 -0700

Natural causes, not leaching coal ash, are to blame for high levels of molybdenum in drinking water wells in southeastern Wisconsin, a study by Duke and Ohio State researchers finds. The scientists used isotopic fingerprinting and age-dating techniques to rule out the possibility that surface coal-ash contamination could be causing the problem and traced it to natural processes occurring deep underground instead.

The oceans were colder than we thought

Thu, 26 Oct 17 00:13:40 -0700

A team of EPFL and European researchers has discovered a flaw in the way past ocean temperatures have been estimated up to now. Their findings could mean that the current period of climate change is unparalleled over the last 100 million years.

Bat Poop: A Reliable Source of Climate Change

Thu, 26 Oct 17 00:02:50 -0700

Isotopes found in bat guano over the last 1,200 years provide scientists with information on how the climate was and is changing.

Aitape skull likely belongs to world's oldest tsunami victim

Wed, 25 Oct 17 00:07:10 -0700

New research from the University of Notre Dame suggests the bone fragment belongs to the world's oldest known tsunami victim -- an important piece in the conversation about how modern populations can adapt to rising sea levels.

Research sheds new light on early turquoise mining in Southwest

Wed, 18 Oct 17 00:14:30 -0700

Researchers are blending archaeology and geochemistry to get a more complete picture of turquoise's mining and distribution in the pre-Hispanic Southwest.

Carbon dioxide levels lower than thought during super greenhouse period

Thu, 12 Oct 17 00:05:20 -0700

Research from Dartmouth College adds to the understanding of Earth's historic hyperthermal events to help explain the planet's current warming trend.

Small collisions make big impact on Mercury's thin atmosphere

Fri, 29 Sep 17 00:04:50 -0700

Mercury, our smallest planetary neighbor, has very little to call an atmosphere, but it does have a strange weather pattern: morning micro-meteor showers.

Changes in Earth's crust caused oxygen to fill the atmosphere

Mon, 18 Sep 17 00:09:50 -0700

New research out of the University of B.C. has uncovered a direct link between changes in the earth's crust three billion years ago and the introduction of free oxygen to the atmosphere. Without these changes, oxygen could have been suppressed in earth's crust forever, so the findings help explain the emergence of life on our planet.

Techniques used in forensic science help discover new molecular fossils

Wed, 30 Aug 17 00:05:40 -0700

Researchers in Japan and China believe they have found new molecular fossils of archaea using a method of analysis commonly used in forensic science.

Russian scientists have analyzed the process of rock destruction

Tue, 22 Aug 17 00:03:40 -0700

Members of the Faculty of Geology of the Lomonosov Moscow State University together with their colleagues have studied the stages of rock deformation. They have revealed a criterion, with the help of which you could predict the critical stage of fracture when the rock destroys.

129I waste used to track ocean currents for 15,000 km after discharge from nuclear plants

Wed, 16 Aug 17 00:12:40 -0700

Radioactive 129I has traveled the equivalent of a third of the way round the globe, since being released from nuclear fuel reprocessing plants in the UK and France. The iodine's 15,000 km journey begins in the nuclear plants at Sellafield and La Hague and continues via the Arctic Ocean and then southward via the Grand Banks towards Bermuda, where it is found at very low concentrations about 20 years later.

This week from AGU: New study details ocean's role in fourth-largest extinction

Wed, 16 Aug 17 00:02:50 -0700

Extremely low oxygen levels in Earth's oceans could be responsible for extending the effects of a mass extinction that wiped out millions of species on Earth around 200 million years ago, according to a new study published in Geochemistry, Geophysics, Geosystems.

Study solves mystery of how first animals appeared on Earth

Wed, 16 Aug 17 00:07:30 -0700

Research led by the Australian National University has solved the mystery of how the first animals appeared on Earth, a pivotal moment for the planet without which humans would not exist.

The key to drought-tolerant crops may be in the leaves
Scientists at the University of Southern California and Texas A