Letter | Published:

Microtektites in Deep-sea Sediments

Naturevolume 214pages372374 (1967) | Download Citation



AN examination of deep-sea sediments deposited south of Australia and Sumatra during and after the last polarity reversal of the Earth's magnetic field resulted in the discovery of a zone containing microscopic (< 1 mm) glassy objects. (Five to ten gram samples were washed through a 125µ sieve.) This zone, which occurs immediately above the last geomagnetic reversal, has now been found in five cores from the Australia Basin, one from the Wharton Basin, and one from the Philippine Basin. Two of these cores will be discussed in a later publication (RC 9–142, 42° 42′ S., 116° 52′ E., depth 2,290 fathoms, from the Australia Basin, and V 20–138, 28° 52′ N., 135° 33′ E., depth 2,264 fathoms, from the Philippine Sea).

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Chapman, D. R., and Larson, K., J. Geophys. Res., 68, 4305 (1963).

  2. 2

    Baker, G., in Tektites (edit. by O'Keefe, J. A.), 1 (University of Chicago Press, Chicago, 1963).

  3. 3

    Barnes, V. E., in Tektites (edit. by O'Keefe, J. A.) 25 (University of Chicago Press, Chicago, 1963).

  4. 4

    Baker, G., Mem. Nat. Mus. Victoria, 23 (1959).

  5. 5

    Thorpe, A. N., and Sentfle, F. E., Geochim. et Cosmochim. Acta, 28, 981 (1964).

  6. 6

    Barnes, V. E., Univ. Texas Publ., 3945 (1940).

  7. 7

    Gentner, W., and Zahringer, J., Nature, 199, 583 (1963).

  8. 8

    Fleischer, R. L., and Price, P. B., Geochim. et Cosmochim. Acta, 29, 161 (1965).

  9. 9

    Chapman, D. R., Larson, K., and Scheiber, L. C., Geochim. et Cosmochim. Acta, 28, 821 (1964).

Download references

Author information


  1. Lamont Geological Observatory and Department of Geology, Columbia University, New York



  1. Search for BILL GLASS in:

About this article

Publication history


Issue Date




By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.