scholarly journals Correlations and zoning patterns of phosphorus and chromium in olivine from H chondrites and the LL chondrite Semarkona

2016 ◽  
Vol 51 (3) ◽  
pp. 520-546 ◽  
Author(s):  
M. C. McCanta ◽  
J. R. Beckett ◽  
E. M. Stolper
Keyword(s):  
H Chondrites

Noble gases in eleven H-chondrites

1973 ◽  
Vol 37 (2) ◽  
pp. 359-362 ◽  
Author(s):  
E. Ganapathy ◽  
Edward Anders
Keyword(s):  
Noble Gases ◽  
H Chondrites

scholarly journals Noble Gas Record of Japanese Chondrites

1989 ◽  
Vol 44 (10) ◽  
pp. 935-944
Author(s):  
Nobuo Takaoka ◽  
Masako Shima ◽  
Fumitaka Wakabayashi
Keyword(s):  
Noble Gas ◽  
Cosmic Ray ◽  
Ordinary Chondrites ◽  
Isotopic Signatures ◽  
Shock Heating ◽  
H Chondrites ◽  
Gas Loss ◽  
Exposure Ages ◽  
Cosmic Ray Exposure Ages ◽  
Gas Component

Abstract Concentrations and isotopic ratios of noble gases are reported for nineteen Japanese chondrites. Among those, Nio (H3-4) is a solar-gas-rich meteorite.U/Th - He ages are younger than K - Ar ages for all meteorites studied. Six of the nine L-chondrites give significantly young K-Ar ages, suggesting gas loss by impact shock heating. The remaining three L-chondrites and seven of the ten H-chondrites have K-Ar ages older than 4 Ga. The L-chondrite Nogata and the H-chondrites Numakai, Ogi and Higashi-Koen have concordant ages.Cosmic-ray exposure ages for six of the H-chondrites show clustering around the 6-Myr peak in the distribution of exposure ages, while those for the L-chondrites, ranging from 8.2 to 64 Myr, do not show clustering.Fukutomi (L4) contains trapped 36Ar in excess, 3.5 times enriched compared to the highest value so far reported for type-4 ordinary chondrites except solar-gas-rich chondrites. The 36Ar/132Xe and 84Kr/132Xe ratios fit along a mixing line between a planetary and a sub-solar (or argon-rich) component found in separates of E-chondrites [43], The Xe isotopic composition is identical with that in Abee and Kenna. The isotopic signatures suggest that this meteorite may contain mineral fragments bearing the noble gas component found in E-chondrites or ureilites. Fukutomi also contains 80Kr, 82Kr and 128Xe produced by epithermal neutron captures on 79Kr, 81Kr and 127I, respectively. From the neutron-produced Kr, the preatmospheric minimum radius is estimated to be 20 cm with an assumption of a spherical meteoroid.

Experimental partial melting of the St. Severin (LL) and Lost City (H) chondrites

1995 ◽  
Vol 59 (2) ◽  
pp. 391-408 ◽  
Author(s):  
A.J.G. Jurewicz ◽  
D.W. Mittlefehldt ◽  
J.H. Jones
Keyword(s):  
Partial Melting ◽  
Lost City ◽  
H Chondrites

Chemical studies of H chondrites. I: Mobile trace elements and gas retention ages

1987 ◽  
Vol 51 (3) ◽  
pp. 727-739 ◽  
Author(s):  
David W Lingner ◽  
Ted J Huston ◽  
Melinda Hutson ◽  
Michael E Lipschutz
Keyword(s):  
Trace Elements ◽  
Chemical Studies ◽  
H Chondrites

Chemical studies of H chondrites: 4. New data and comparison of Antarctic suites

1995 ◽  
Vol 100 (E2) ◽  
pp. 3297 ◽  
Author(s):  
Stephen F. Wolf ◽  
Michael E. Lipschutz
Keyword(s):  
Chemical Studies ◽  
H Chondrites

scholarly journals Investigation of the weathering effect on Rb-Sr systematics and trace element abundances in Antarctic and non-Antarctic meteorites: A case of H-chondrites.

1990 ◽  
Vol 38 (3) ◽  
pp. 115-123 ◽  
Author(s):  
Yoshiyuki Nishikawa ◽  
Noboru Nakamura ◽  
Keiji Misawa ◽  
Osamu Okano ◽  
Hiroo Kagami ◽  
...  
Keyword(s):  
Trace Element ◽  
Element Abundances ◽  
H Chondrites

scholarly journals To be or not to be oxidized: A case study of olivine behavior in the fusion crust of ureilite A 09368 and H chondrites A 09004 and A 09502

2019 ◽  
Vol 54 (7) ◽  
pp. 1563-1578 ◽  
Author(s):  
Lidia Pittarello ◽  
Akira Yamaguchi ◽  
Julia Roszjar ◽  
Vinciane Debaille ◽  
Christian Koeberl ◽  
...  
Keyword(s):  
H Chondrites
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