The age of three Urengoi (northwestern Siberia) tektites was estimated by the 'repeated-polishing' version of the track technique, using the Apatite FC-3 as the age standard. The average age for the three samples was found to be 23 + or - 1.6 million years. This age does not coincide with the age of known tektite fields on the earth, and it is not close to the age of the certain impact craters on Soviet territory. It is concluded that the Urengoi tektites may have originated on a hitherto unknown tektite dispersion field.
- Pub Date:
- November 1990
- Meteoritic Composition;
- Particle Tracks;
- Planetary Craters;
- Radioactive Age Determination;
- Lunar and Planetary Exploration