Solar composition noble gases in the Washington County iron meteorite: a correction

1987 ◽  
Vol 84 (2-3) ◽  
pp. 356
Author(s):  
R.H. Becker ◽  
R.O. Pepin
Keyword(s):  
Noble Gases ◽  
Iron Meteorite ◽  
Washington County ◽  
Solar Composition

Solar composition noble gases in the Washington County iron meteorite

1984 ◽  
Vol 70 (1) ◽  
pp. 1-10 ◽  
Author(s):  
R.H. Becker ◽  
R.O. Pepin
Keyword(s):  
Noble Gases ◽  
Iron Meteorite ◽  
Washington County ◽  
Solar Composition

scholarly journals Solar noble gases in an iron meteorite indicate terrestrial mantle signatures derive from Earth’s core

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Manfred Vogt ◽  
Mario Trieloff ◽  
Ulrich Ott ◽  
Jens Hopp ◽  
Winfried H. Schwarz
Keyword(s):  
Solar Wind ◽  
Noble Gases ◽  
Iron Meteorite ◽  
Washington County ◽  
Magma Ocean ◽  
Earth’S Core ◽  
Earth's Core ◽  
Earth’S Mantle ◽  
Metal Melts ◽  
Solar Type

AbstractNoble gases are important tracers of planetary accretion and acquisition of volatiles to planetary atmospheres and interiors. Earth’s mantle hosts solar-type helium and neon for which 20Ne/22Ne ratios advocate either incorporation of solar wind irradiated solids or solar nebula gas dissolution into an early magma ocean. However, the exact source location of primordial signatures remains unclear. Here we use high-resolution stepwise heating gas extraction experiments to analyse interior samples of the iron meteorite Washington County and find that they contain striking excesses of solar helium and neon. We infer that the Washington County protolith was irradiated by solar wind and that implanted noble gases were partitioned into segregating metal melts. The corollary that solar signatures are able to enter the cores of differentiated planetesimals and protoplanets validates hypotheses that Earth’s core may have incorporated solar noble gases and may be contributing to the solar signatures observed in Earth’s mantle.

The Neutrino Revolution

2010 ◽  
Author(s):  
David Fisher
Keyword(s):  
Quantum Mechanics ◽  
Binding Energy ◽  
Mass Spectrometer ◽  
Noble Gases ◽  
Iron Meteorite ◽  
Ancient History ◽  
Basic Part ◽  
Atomic Nuclei ◽  
Kennedy Assassination

But while all this was going on, while the noble gases were being used to work out all the details of stellar processes, a different argon-based experiment was sneaking in and threatening to upset the whole applecart. I first began to learn about it way back in the fading summer of 1958, when I pulled myself up off the Westhampton sands and sauntered back to the lab, angry—in my own self-importance—that Gert Friedlander had hopped off to Europe and left me on my own. You’ll remember Ray Davis, in whose lab I was to work on the iron meteorite K/Ar problem? Well, I first met him that summer when I found Ollie Schaeffer and his mass spectrometer. In the lab next door was this courtly, soft-spoken Southern gentleman, Raymond Davis, Junior, who was putting together a most unlikely experiment and who invited me to join him in his journey into the unknown. Except that it wasn’t really unknown. It was a basic part of quantum mechanics, the theory describing the inner workings of atomic nuclei, which was put together largely during the 1920s and ‘30s—some thirty years before my sojourn at Brookhaven, and which I considered a time of ancient history, not quite real. Oh, I accepted that the 1920s had really existed, but in an intellectual way only, as a sort of existential fantasy—they had happened before I was born. (I first noticed this in others when, in the 1980s, I referred during a class lecture to the Kennedy assassination and was received with blank, uninterested stares. The students knew about it, but it had happened before they were born and had the same status as the Lincoln assassination: it was true, certainly, but basically it was a story grown-ups told.) It’s hard to realize that I’m writing this now more than twice as far removed from my Brookhaven years as those years were from the beginnings of quantum mechanics. So anyhow, it was known back then that the nuclei of atoms were held together by a binding energy which can be expressed through Einstein’s famous equation E = mc2.

Noble gases in the Xinjiang (Armanty) iron meteorite--A big object with a short cosmic-ray exposure age

2011 ◽  
Vol 46 (6) ◽  
pp. 785-792 ◽  
Author(s):  
Katja AMMON ◽  
Ingo LEYA ◽  
Yangtin LIN
Keyword(s):  
Noble Gases ◽  
Cosmic Ray ◽  
Iron Meteorite ◽  
Exposure Age ◽  
Cosmic Ray Exposure Age

Primordial noble gases in a graphite-metal inclusion from the Canyon Diablo IAB iron meteorite and their implications

2005 ◽  
Vol 40 (3) ◽  
pp. 431-443 ◽  
Author(s):  
Jun-ichi Matsuda ◽  
Miwa Namba ◽  
Teruyuki Maruoka ◽  
Takuya Matsumoto ◽  
Gero Kurat
Keyword(s):  
Noble Gases ◽  
Iron Meteorite ◽  
Metal Inclusion

scholarly journals Abundance and isotopic composition of noble gases in metal and graphite of the Bohumilitz IAB iron meteorite

2001 ◽  
Vol 36 (5) ◽  
pp. 597-609 ◽  
Author(s):  
Teruyuki MARUOKA ◽  
Jun-ichi MATSUDA ◽  
Gero KURAT
Keyword(s):  
Isotopic Composition ◽  
Noble Gases ◽  
Iron Meteorite

Cosmogenic Noble Gases in the Washington County Meteorite

Nature ◽  
1959 ◽  
Vol 183 (4662) ◽  
pp. 660-661 ◽  
Author(s):  
OLIVER A. SCHAEFFER ◽  
DAVID E. FISHER
Keyword(s):  
Noble Gases ◽  
Washington County

scholarly journals Cosmogenic 45Sc in Gibeon iron meteorite by radioanalytical neutron activation analysis

2011 ◽  
Vol 1 (1) ◽  
pp. 383-386
Author(s):  
Y. Oura ◽  
M. Honda ◽  
M. Ebihara ◽  
K. Bajo ◽  
K. Nagao
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Noble Gases ◽  
Noble Gas ◽  
Radiochemical Neutron Activation Analysis ◽  
Iron Meteorite ◽  
Noble Gas Isotopes ◽  
The Difference ◽  
Exposure Ages

Abstract Cosmogenic nuclides in many fragments of Gibeon iron meteorite have been studied by Honda and co-workers. They observed that their concentrations varied by 5 orders and found that Gibeon gives two different exposure ages using pair of stable noble gas isotopes and radinuclide. To assess one possible cause for the difference, namely loss of partial noble gases due to atmospheric heating of the incoming meteoroid, concentrations of non-volatile and stable cosmogenic 45Sc of Gibeon were determined by radiochemical neutron activation analysis (RNAA). For RNAA, a radiochemical procedure using extraction chromatography was developed to separate Sc from an iron meteorite. Concentrations of 45Sc in 7 fragments ranged from 0.0064 to 0.11 ppb and correlated with cosmogenic 4He concentrations. This correlation suggests that noble gases in Gibeon were not lost during the fall to the earth.

Noble gases in metal and schreibersite of the Acuña (IIIAB) iron meteorite

1996 ◽  
Vol 31 (2) ◽  
pp. 227-233 ◽  
Author(s):  
Jun-ichi Matsuda ◽  
Keisuke Nagao ◽  
Gero Kurat
Keyword(s):  
Noble Gases ◽  
Iron Meteorite
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