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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
The study of sediments and speleothems in the Zbrašov Aragonite Caves
 Bosák, Pavel ; Šlechta, Stanislav ; Hercman, H. ; Pruner, Petr
The numerical dating of hydrothemal speleothems (doughnuts) from locality At Crocodile gave older data than was published in the literature: 123 to 127 thousand years (with range 108 to 144 thousand years). Speleothems crystallized in the time of climatic optimum of the last interglacial period (Eemian) corresponding to the marine isotope stage (MIS) 5e. Clastic sediments from excavations in the area At Crocodile show normal paleomagnetic polarity in all samples with nearly recent magnetic field directions. Studied sediments cover block of hydrothermal speleothems fallen from the wall and therefore they must be younger than 108 thousand years.
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