Noble gases in the howardites Bholghati and Kapoeta

Timothy Swindle, D. H. Garrison, J. N. Goswami, C. M. Hohenberg, R. H. Nichols, C. T. Olinger

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Analyses of noble gases in whole rock samples of the howardites Bholghati and Kapoeta and grain-size separates of Kapoeta yield evidence for excesses of the Xe isotopes 129Xe, 131Xe, 132Xe, 134Xe, and 136Xe in a low-temperature component, similar to lunar excess fission Xe. Such a component may be able to provide Chronometric information if the relative abundances of radioactive progenitors (129I, 244Pu, and 238U) can be determined, but the isotopic spectra we obtain are not sufficiently precise to do so. Eucritic clast BH-5 in Bholghati contains Xe produced in situ by the decay of 244Pu. Calculated fission Xe retention ages are 30-70 Ma after the formation of the solar system, consistent with the apparent presence of 146Sm decay products. Both the clast and the matrix of Bholghati have K-Ar ages of about 2 Ga, suggesting a common thermal event at least that recently.

Original languageEnglish (US)
Pages (from-to)2183-2194
Number of pages12
JournalGeochimica et Cosmochimica Acta
Volume54
Issue number8
DOIs
StatePublished - 1990

Fingerprint

Noble Gases
Solar system
noble gas
Isotopes
clast
Rocks
solar system
relative abundance
grain size
isotope
Temperature
matrix
rock
Hot Temperature
in situ
decay product

ASJC Scopus subject areas

  • Geochemistry and Petrology

Cite this

Swindle, T., Garrison, D. H., Goswami, J. N., Hohenberg, C. M., Nichols, R. H., & Olinger, C. T. (1990). Noble gases in the howardites Bholghati and Kapoeta. Geochimica et Cosmochimica Acta, 54(8), 2183-2194. https://doi.org/10.1016/0016-7037(90)90044-L

Noble gases in the howardites Bholghati and Kapoeta. / Swindle, Timothy; Garrison, D. H.; Goswami, J. N.; Hohenberg, C. M.; Nichols, R. H.; Olinger, C. T.

In: Geochimica et Cosmochimica Acta, Vol. 54, No. 8, 1990, p. 2183-2194.

Research output: Contribution to journalArticle

Swindle, T, Garrison, DH, Goswami, JN, Hohenberg, CM, Nichols, RH & Olinger, CT 1990, 'Noble gases in the howardites Bholghati and Kapoeta', Geochimica et Cosmochimica Acta, vol. 54, no. 8, pp. 2183-2194. https://doi.org/10.1016/0016-7037(90)90044-L
Swindle T, Garrison DH, Goswami JN, Hohenberg CM, Nichols RH, Olinger CT. Noble gases in the howardites Bholghati and Kapoeta. Geochimica et Cosmochimica Acta. 1990;54(8):2183-2194. https://doi.org/10.1016/0016-7037(90)90044-L
Swindle, Timothy ; Garrison, D. H. ; Goswami, J. N. ; Hohenberg, C. M. ; Nichols, R. H. ; Olinger, C. T. / Noble gases in the howardites Bholghati and Kapoeta. In: Geochimica et Cosmochimica Acta. 1990 ; Vol. 54, No. 8. pp. 2183-2194.
@article{175f948fe8494e9eb45d480b14d8763f,
title = "Noble gases in the howardites Bholghati and Kapoeta",
abstract = "Analyses of noble gases in whole rock samples of the howardites Bholghati and Kapoeta and grain-size separates of Kapoeta yield evidence for excesses of the Xe isotopes 129Xe, 131Xe, 132Xe, 134Xe, and 136Xe in a low-temperature component, similar to lunar excess fission Xe. Such a component may be able to provide Chronometric information if the relative abundances of radioactive progenitors (129I, 244Pu, and 238U) can be determined, but the isotopic spectra we obtain are not sufficiently precise to do so. Eucritic clast BH-5 in Bholghati contains Xe produced in situ by the decay of 244Pu. Calculated fission Xe retention ages are 30-70 Ma after the formation of the solar system, consistent with the apparent presence of 146Sm decay products. Both the clast and the matrix of Bholghati have K-Ar ages of about 2 Ga, suggesting a common thermal event at least that recently.",
author = "Timothy Swindle and Garrison, {D. H.} and Goswami, {J. N.} and Hohenberg, {C. M.} and Nichols, {R. H.} and Olinger, {C. T.}",
year = "1990",
doi = "10.1016/0016-7037(90)90044-L",
language = "English (US)",
volume = "54",
pages = "2183--2194",
journal = "Geochmica et Cosmochimica Acta",
issn = "0016-7037",
publisher = "Elsevier Limited",
number = "8",

}

TY - JOUR

T1 - Noble gases in the howardites Bholghati and Kapoeta

AU - Swindle, Timothy

AU - Garrison, D. H.

AU - Goswami, J. N.

AU - Hohenberg, C. M.

AU - Nichols, R. H.

AU - Olinger, C. T.

PY - 1990

Y1 - 1990

N2 - Analyses of noble gases in whole rock samples of the howardites Bholghati and Kapoeta and grain-size separates of Kapoeta yield evidence for excesses of the Xe isotopes 129Xe, 131Xe, 132Xe, 134Xe, and 136Xe in a low-temperature component, similar to lunar excess fission Xe. Such a component may be able to provide Chronometric information if the relative abundances of radioactive progenitors (129I, 244Pu, and 238U) can be determined, but the isotopic spectra we obtain are not sufficiently precise to do so. Eucritic clast BH-5 in Bholghati contains Xe produced in situ by the decay of 244Pu. Calculated fission Xe retention ages are 30-70 Ma after the formation of the solar system, consistent with the apparent presence of 146Sm decay products. Both the clast and the matrix of Bholghati have K-Ar ages of about 2 Ga, suggesting a common thermal event at least that recently.

AB - Analyses of noble gases in whole rock samples of the howardites Bholghati and Kapoeta and grain-size separates of Kapoeta yield evidence for excesses of the Xe isotopes 129Xe, 131Xe, 132Xe, 134Xe, and 136Xe in a low-temperature component, similar to lunar excess fission Xe. Such a component may be able to provide Chronometric information if the relative abundances of radioactive progenitors (129I, 244Pu, and 238U) can be determined, but the isotopic spectra we obtain are not sufficiently precise to do so. Eucritic clast BH-5 in Bholghati contains Xe produced in situ by the decay of 244Pu. Calculated fission Xe retention ages are 30-70 Ma after the formation of the solar system, consistent with the apparent presence of 146Sm decay products. Both the clast and the matrix of Bholghati have K-Ar ages of about 2 Ga, suggesting a common thermal event at least that recently.

UR - http://www.scopus.com/inward/record.url?scp=0025682612&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0025682612&partnerID=8YFLogxK

U2 - 10.1016/0016-7037(90)90044-L

DO - 10.1016/0016-7037(90)90044-L

M3 - Article

AN - SCOPUS:0025682612

VL - 54

SP - 2183

EP - 2194

JO - Geochmica et Cosmochimica Acta

JF - Geochmica et Cosmochimica Acta

SN - 0016-7037

IS - 8

ER -