Letter | Published:

Radiogenic and Atmospheric Argon Content of Tektites

Naturevolume 199page583 (1963) | Download Citation



IN previous publications it has been shown that tektites can be dated by the potassium/argon method1–3. The potassium/argon ages give the time of their formation and also show which tektite localities belong together. It has been found that tektites from North America, the moldavites and tektites from Indo-China, Indonesia and from Australia form three independent strewn fields. The size of the strewn fields is of crucial interest to all hypotheses concerned with the origin of tektites. Therefore, these experiments have been extended with improved techniques and with a larger variety of samples. The results are given in Table 1.

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  1. 1

    Gentner, W., and Zähringer, J., Z. Naturforsch., 14a, 686 (1959); 15a, 93 (1960).

  2. 2

    Reynolds, J. H., Geochim. Cosmochim. Acta, 20, 101 (1960).

  3. 3

    Gentner, W., Lippolt, H. J., and Schaeffer, O. A., Geochim. Cosmochim. Acta, 27, 191 (1963).

  4. 4

    Baker, G., Nature, 185, 291 (1960); Georgia Mineral Newsletter, 15, 62 (1962).

  5. 5

    Barnes, V. E., Sci. Amer., 205, 58 (1961).

  6. 6

    Suess, H. E., Geochim. Cosmochim. Acta, 2, 76 (1951).

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  1. Max-Planck-Institut für Kernphysik, Heidelberg

    •  & W. GENTNER


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