Table 1:    Results of 230Th/234U dating of travertine from the Plitvice National Park and the Krka National Park.

 

UZ-Lab.No. Location Description of sample U (ppm) 234U/238U 230Th/232Th 230Th/234U 230Th/234U
age (ka)		 14C age
(ka,BP)
(A0=85%)
Plitvice National Park
8 Bijela Rijeka compact tufa 0.192 1.430±0.023 12.8±0.5 0.656±0.014 107±4 238± 1
9 Plitvieki Ljeskovac hard,
compact tufa		 0.235 1.501±0.030 13.7±0.7 0.666±0.018 109±5 >40
10     0.229 1.492±0.027 14.2±0.5 0.726±0.016 126±5  
12     0.261 1.503±0.021 14.1±0.5 0.674±0.013 111±4  
19 Plitvieki Ljeskovac hard,
compact tufa		 0.249 1.536±0.017 50.3 0.611±0.010 96±3 >40
20 Plitvieki Ljeskovac hard,
compact tufa		 0.222 1.576±0.027 47.9 0.624±0.011 98±3 >40
Krka National Park
17 Krcic crystalline tufa 0.224 1.425±0.014 4.9±0.3 0.056±0.002 6.3±0.2 5.9±0.1
21 Krcic hard,
compact tufa		 0.320 1.246±0.014 3.5±0.1 0.682±0.013 118±6 26.9±0.8
28     0.303 1.212±0.020 3.5±0.1 0.705±0.021 124±9  
29     0.369 1.132±0.010 2.6±0.1 0.669±0.016 114±8  
23 Krka,
Quarry Topolje		 hard tufa with three separate layers 0.230 3.194±0.913 4.7±0.1 1.038±0.027 U leaching >40
24 Krka,
Lake Mlinarsko		 very hard,
compact tufa		 0.466 1.155±0.012 6.5±0.1 0.643±0.012 109±4 32.5±2.8

 

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