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40Ar/39Ar dates for spreading rates in eastern Iceland

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Abstract

RADIOMETRIC dates for eastern Iceland have shown considerable scatter (see ref. 1 for a summary). This paper describes the results of the systematic dating of a stratigraphically continuous sequence of lavas (see Figure 1 for the sample locations; nomenclature follows ref. 2, from which further details can be obtained). As some of the lavas have experienced low-grade hydrothermal alteration3 the 40Ar/39Ar step-heating method was chosen, and the results of determinations on 18 samples from 11 sections are set out in Table 1.

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Author notes

  1. J. G. Ross

    Present address: Esso Exploration and Production UK Inc., Walton-on-Thames, UK

Authors and Affiliations

  1. Sub-department of Geophysics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 3BX, UK

    J. G. Ross & A. E. MUSSETT

Authors
  1. J. G. Ross
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  2. A. E. MUSSETT
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Ross, J., MUSSETT, A. 40Ar/39Ar dates for spreading rates in eastern Iceland. Nature 259, 36–38 (1976). https://doi.org/10.1038/259036a0

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  • DOI: https://doi.org/10.1038/259036a0

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