An experimental model for the tektite fluvial transport based on the most distal Polish moldavite occurrences

1Tomasz Brachaniec
Meteoritics & Planetary Science (in Press) Link to Article [DOI: 10.1111/maps.13035]
1Department of Geochemisty, Mineralogy and Petrography, Faculty of Earth Sciences, University of Silesia, Sosnowiec, Poland
Published by arrangement wit John Wiley & Sons

Reworking and redeposition of tektites is a highly complex and multistage geological process including many factors. A tumbling experiment was therefore undertaken with the aim of estimating a distance of transport that such moldavites can withstand. Though the experiment probably did not accurately mimic natural conditions, our results proved that moldavites can withstand considerable transport only over a distance of a few kilometers. Observed abrasion of tektites was significant in the early stage of experimental transport; the rate of abrasion decreased correlatively with increasing distance of transport as usual. Overall, given the results obtained from this experimental study and their state of preservation described in the literature, it is very likely that Polish tektites were reworked and redeposited by rivers from the Sudetes Mountains. Based on the paleoreconstruction of river flows, it can be assumed that the Polish tektites originated from two independent sediment supply areas.


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