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Meteorites key to the story of Earth's layers
Australian National University via ScienceDaily
A new analysis of the chemical make-up of meteorites has helped scientists work out when the Earth formed its layers. The research by an international team of scientists confirmed the Earth's first crust had formed around 4.5 billion years ago. The team measured the amount of the rare elements hafnium and lutetium in the mineral zircon in a meteorite that originated early in the solar system.
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SOCIETY NEWS


Goldschmidt2015 preparations in full swing
GS
We are pleased to report that a huge number of abstracts have been received and we are looking forward to a fantastic conference.
  • Note the deadline for Early Registration is June 16. Members of partner societies (EAG, GS, GSJ, EMU AFEQ, DMG, HGS, Min Soc. SGI, SIMP and SFIS) can also benefit from reduced fees (€490 and students €295).
  • A whole series of Student Events will be proposed, as well as a Mentor Program.
  • 12 workshops and 7 geochemical field trips are available for booking.
  • There is still time for associations and partner societies to schedule social events, meetings, ceremonies or present awards during the conference, details here.

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PRODUCT SHOWCASE
  Analab Corrosion Resistant Laboratory Appliances

Analab manufacture corrosion resistant laboratory appliances such as acid vapour cleaning stations, hotplates, and sample preparation devices. Our devices can be used with a wide range of acids and bases (HF to NH4OH). We are represented in North America by Isomass Scientific.

Please visit us at Goldschmidt Aug 16 – 21/15 in Prague.
 


Featured Geochemical Career Center Jobs
GS


Senior Staff Associate (Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY)


Job Seekers: View current openings | Post your resume | Career resources

Employers: All jobs posted in the Geochemical Career Center are cross-promoted through Facebook, Twitter and right here in Geochemical News.

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New in GCA (v.155, 15 April 2015)
GS
Replacement of barite by a (Ba,Ra)SO4 solid solution at close-to-equilibrium conditions: A combined experimental and theoretical study

Sea-ice distribution in the modern Arctic Ocean: Biomarker records from trans-Arctic Ocean surface sediments

Sedimentary reservoir oxidation during geologic CO2 sequestration

Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy

Influence of organic ligands on magnesite growth: A hydrothermal atomic force microscopy study

Effects of seawater-pH and biomineralization on the boron isotopic composition of deep-sea bamboo corals

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GEOCHEMISTRY IN THE NEWS


Study: Earth ate a Mercury-like body early in its history
Los Angeles Times
A Mercury-like body smashed into a young Earth and gave our planet's core the radioactive elements necessary to generate a magnetic field, a pair of Oxford geochemists say. Without that magnetic field, there would be no shield to protect us from the onslaught of radiation constantly bombarding Earth from space, making the existence of life as we know it impossible, scientists say.
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Typhoon Haiyan's storm surge may contaminate aquifer for years
AGU
In research of significance to the world's expanding coastal populations, scientists have found that geology and infrastructure play key roles in determining whether aquifers that provide drinking water are inundated with seawater during a typhoon or hurricane and how long the contamination lasts.
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Fragment of continental crust found under south east Iceland
Space Daily
An international team, including researchers at the University of Liverpool, have shown that south east Iceland is underlain by continental crust. The team found that the accepted theory, that Iceland consists only of very thick oceanic crust, is incorrect.
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Evidence for moon-forming impact found inside Meteorites
NASA
Not too long after the planets began forming, a Mars-sized object slammed into Earth, creating the debris that would coalesce into the moon. But some of the debris escaped all the way out to the asteroid belt. Collisions there left shock-heating signatures that can still be detected billions of years later in meteorites that have fallen to Earth.
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TRENDING ARTICLES
Missed last week's issue? See which articles your colleagues read most.

    How did the Earth's continents form? Scientists move big step closer to solving mystery (The Huffington Post)
Study: Greatest mass extinction driven by acidic oceans (University of Edinburgh via ScienceDaily)
Panama debate fueled by zircon dating: Americas connected earlier than thought (Science via Phys.org)

Don't be left behind. Click here to see what else you missed.


 

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