Jeff Klein

University of Pennsylvania

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R. Middleton

ConocoPhillips (Canada)

G. F. Herzog

Rutgers, The State University of New Jersey

David Fink

Australian Nuclear Science and Technology Organisation

J. R. Arnold

Schlumberger (British Virgin Islands)

M. Rex

University of Arizona

Matthew D. P. Truch

University of Pennsylvania

D. Scott

University of British Columbia

Joshua O. Gundersen

University of Miami

M. Halpern

University of British Columbia

K. Nishiizumi

University of California, Berkeley

Cooperative Institutions

University of British Columbia

Cardiff University

California Institute of Technology

Max Planck Society

University of Toronto

Carnegie Institution for Science

Rutgers, The State University of New Jersey

University of Pennsylvania

Fisheries and Oceans Canada

Centre National de la Recherche Scientifique

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Over half of the far-infrared background light comes from galaxies at z ≥ 1.2

Nature (2009)

Michelle Devlin P. A. R. Ade I. Aretxaga James J. Bock Edward L. Chapin

Cosmic infrared background

10.1038/nature07918

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Citations (172)

Complex exposure histories for meteorites with “short” exposure ages

Meteoritics and Planetary Science (1997)

G. F. Herzog S. Vogt Achim Albrecht S. Xue David Fink

Abstract— We report measurements of 26 Al and 10 Be activities in nine ordinary chondrites and of the light noble gas concentrations and 36 Cl and 41 Ca activities in subsets of those meteorites. All but Murray have low 21 Ne concentrations (<1.0 × 10 −8 cm 3 STP/g) and have previously been used to estimate 21 Ne production rates. Ladder Creek, Murchison, Sena, and Timochin have inventories of cosmogenic radionuclides that are compatible with a single stage of irradiation and give 21 Ne production rates that are consistent with the standard L‐chondrite value of 0.33 × 10 −8 cm 3 STP/g/Ma. In contrast, Cullison, Guenie, Shaw, and Tsarev experienced complex irradiation histories. They and several other meteorites with low nominal exposure ages also have lower 3 He/ 21 Ne ratios than expected based on their 22 Ne/ 21 Ne ratios. A general association between low 21 Ne contents and 3 He losses suggests that meteorites with short lifetimes often occupy orbits with small perihelia. However, meteorites with low 21 Ne contents, one‐stage exposure histories, and losses of cosmogenic 3 He are rare. Possible explanations for the scarcity are (1) statistical, (2) that it is harder for more deeply buried protometeoroids to lose gas in a liberating collision, and (3) that it is harder to insert more deeply buried protometeoroids directly into orbits with small perihelia.

Murchison meteorite

Noble gas

Cosmogenic nuclide

10.1111/j.1945-5100.1997.tb01284.x

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Citations (62)

Terrestrial Cosmogenic Nuclide Dating

Springer eBooks (2014)

John Gosse Jeff Klein

Cosmogenic nuclide

10.1007/978-94-007-6326-5_148-1

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Beryllium-10 Contents of Eucrites

Meteoritics and Planetary Science (1986)

D. Aylmer G. F. Herzog Jeff Klein R. Middleton

Source

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Citations (2)

Terrestrial Cosmogenic Nuclide Dating

Encyclopedia of earth sciences series/Encyclopedia of earth sciences (2015)

John Gosse Jeff Klein

Cosmogenic nuclide

Surface exposure dating

10.1007/978-94-007-6304-3_148

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Citations (3)

The Lunar Fission Hypothesis and Volatile/Refractory Element Fractionation

Meteoritics and Planetary Science (1983)

F. Tera Leanne Brown Jeff Klein R. Middleton Brian Mason

Refractory (planetary science)

Volatiles

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Citations (4)

Low Be-10 and Al-26 contents of ureilites - Production at meteoroid surfaces

Geochimica et Cosmochimica Acta (1990)

D. Aylmer S. Vogt G. F. Herzog Jeff Klein David Fink

Parent body

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Citations (1)

26 Al and 10 Be Contents of the Murchison (C2) Chondrite

Meteoritics and Planetary Science (1991)

Achim Albrecht S. Vogt G. F. Herzog Jeff Klein David Fink

Murchison meteorite

Carbonaceous chondrite

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Citations (3)

Exposure history of glass and breccia phases of lunar meteorite EET87521

Meteoritics and Planetary Science (1996)

O. Eugster Ch. Thalmann Achim Albrecht G. F. Herzog J. S. Delaney

Abstract— Glass‐rich separates were prepared from a sample of the basaltic lunar meteorite EET87521 rich in dark glass. Noble gas isotopic abundances and 26 Al and 10 Be activities were measured to find out whether shock effects associated with lunar launch helped to assemble these phases. Similar 10 Be and 26 Al activities indicate that all materials in EET87521 had a common exposure history in the last few million years before launch. However, the glass contains much higher concentrations of trapped gases and records a much longer cosmic‐ray exposure, 100 Ma–150 Ma, in the lunar regolith than does the bulk sample. The different histories show that the glass existed long before the ejection of EET87521. The trapped 40 Ar/ 36 Ar ratio of 1.6 ± 0.1 implies that the lunar exposure that produced most of the stable cosmogenic noble gases began 500 Ma ago. Cosmogenic and trapped noble gas components correlate strongly in various temperature‐release fractions and phases of EET87521, which is probably because the glass contains most of the gas. The trapped solar ratios, 20 Ne/ 22 Ne = 12.68 ± 0.20 and 36 Ar/ 38 Ar = 5.24 ± 0.05 can be understood as resulting from a mixture consisting of ∼60% solar wind and 40% solar energetic particles (SEP). All EET87521 phases show a 40 K‐ 40 Ar gas retention age of ∼3300 Ma, which is in the range of typical lunar mare basalts.

Noble gas

Regolith

Breccia

Lunar soil

Outgassing

Lunar mare

10.1111/j.1945-5100.1996.tb02026.x

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Citations (14)

Solar Cosmic Ray Effects in Allan Hills 77005

Meteoritics and Planetary Science (1986)

K. Nishiizumi J. R. Arnold N. J. Goswami Jeff Klein R. Middleton

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Citations (4)