The Erdmannshöhle near Hasel, SW Germany: karst environment and cave evolution

Becker, Arnfried; Piepjohn, Karsten; Schröder-Ritzrau, Andrea

doi:10.1186/s00015-020-00363-5

Swiss Journal of Geosciences

Table 2 Results of the U/Th dating on speleothem samples from the Erdmannshöhle

From: The Erdmannshöhle near Hasel, SW Germany: karst environment and cave evolution

IUP ID	Sample	²³⁸U (ng/g)	²³²Th (ng/g)	²³⁰Th/²³⁸U^a	²³⁰Th/²³²Th^a	δ²³⁴U (‰)	Age (ka)	Age _corr. (ka)	δ²³⁴U_initial (‰)
Fig. 9a	Dreikönig
IUP-8564	Test sample	506.389 ± 0.028	37.697 ± 0.087	0.32100 ± 0.00084	13.106 ± 0.046	402.33 ± 0.78	28.027 ± 0.083	26.63 ± 0.71	433.8 ± 1.2
IUP-8565	Test sample	586.546 ± 0.032	13.133 ± 0.037	0.2751 ± 0.0010	37.35 ± 0.17	301.85 ± 0.89	25.680 ± 0.094	25.23 ± 0.27	324.2 ± 1.0
Fig. 9b	Dreikönig
IUP-8794	Drill core	168.961 ± 0.015	76.92 ± 0.16	0.3217 ± 0.0015	2.148 ± 0.011	1033.2 ± 5.1	18.539 ± 0.093	12.5 ± 2.9	1070 ± 10
IUP-8795	Drill core	198.233 ± 0.017	39.042 ± 0.070	0.2569 ± 0.0010	4.018 ± 0.017	994.3 ± 3.1	14.890 ± 0.070	12.3 ± 1.4	1029.4 ± 5.1
Fig. 8	Labyrinth
IUP-8789 a	Stalagmite	501.610 ± 0.045	38.699 ± 0.059	0.7982 ± 0.0013	31.697 ± 0.071	306.0 ± 2.1	98.24 ± 0.37	96.76 ± 0.84	402.2 ± 2.9
IUP-8789 b	Stalagmite	511.491 ± 0.039	128.93 ± 0.22	0.8210 ± 0.0017	9.916 ± 0.027	300.9 ± 1.6	103.38 ± 0.41	98.4 ± 2.5	397.4 ± 3.5
IUP-8790 a	Flowstone	616.463 ± 0.073	1804.1 ± 3.6	1.0157 ± 0.0032	1.0579 ± 0.0040	412.5 ± 3.2	126.68 ± 0.79	57 ± 40^b	485 ± 55
IUP-8790 b	Flowstone	450.574 ± 0.047	751.1 ± 1.3	0.9870 ± 0.0024	1.8175 ± 0.0054	427.5 ± 3.4	118.20 ± 0.64	85 ± 21^b	544 ± 33
IUP-8792 a	Flowstone	495.862 ± 0.050	946.6 ± 1.6	0.9505 ± 0.0024	1.5145 ± 0.0046	335.2 ± 2.1	125.86 ± 0.56	83 ± 24^b	424 ± 29
IUP-8792 b	Flowstone	431.017 ± 0.044	397.61 ± 0.78	0.8604 ± 0.0021	2. 8691 ± 0. 0090	298. 4 ± 2. 5	111. 95 ± 0. 65	93 ± 11^b	388 ± 13
IUP-8793	Flowstone	526. 288 ± 0. 052	800. 3 ± 1. 9	0. 9603 ± 0. 0026	1. 9168 ± 0. 0069	297. 5 ± 2. 2	135. 92 ± 0. 87	103 ± 21^b	398 ± 24
IUP-8948	Stalagmite	410. 948 ± 0. 026	98. 29 ± 0. 17	0. 7592 ± 0. 0019	9. 773 ± 0. 030	228. 2 ± 2. 1	100. 96 ± 0. 55	95. 9 ± 2. 5	299. 3 ± 3. 4
IUP-8949	Stalagmite	558. 960 ± 0. 036	23. 242 ± 0. 050	0. 8396 ± 0. 0022	62. 09 ± 0. 21	343. 6 ± 1. 7	101. 26 ± 0. 46	100. 49 ± 0. 61	456. 4 ± 2. 4
Fig. 7a	Steffisgang
IUP-9384	Stalagmite	791. 995 ± 0. 071	10. 170 ± 0. 017	0. 9342 ± 0. 0015	223. 32 ± 0. 52	172. 08 ± 0. 61	162. 53 ± 0. 63	162. 25 ± 0. 66	272. 2 ± 1. 1
IUP-9385	Stalagmite	410. 143 ± 0. 026	7. 804 ± 0. 013	0. 7754 ± 0. 0014	124. 98 ± 0. 30	167. 43 ± 0. 75	114. 76 ± 0. 39	114. 34 ± 0. 43	231. 3 ± 1. 1
Fig. 7b	Steffisgang
IUP-9386	Stalagmite	563. 965 ± 0. 024	7. 295 ± 0. 013	0. 7400 ± 0. 0014	175. 64 ± 0. 45	118. 62 ± 0. 44	115. 02 ± 0. 38	114. 72 ± 0. 40	164. 05 ± 0. 64
IUP-9387	Stalagmite	377. 069 ± 0. 019	3. 2029 ± 0. 0063	0. 7682 ± 0. 0021	277. 81 ± 0. 93	203. 1 ± 1. 2	106. 77 ± 0. 51	106. 60 ± 0. 52	274. 4 ± 1. 7
Fig. 6a	Steffisgang
IUP-9537	Stalagmite	477. 023 ± 0. 027	1. 0534 ± 0. 0023	1. 0770 ± 0. 0026	1497. 4 ± 4. 9	611. 6 ± 1. 2	109. 74 ± 0. 41	109. 71 ± 0. 45	833. 9 ± 1. 9
IUP-9538	Stalagmite	496. 80 ± 0. 15	8. 091 ± 0. 023	1. 0291 ± 0. 0032	194. 08 ± 0. 82	539. 9 ± 1. 6	110. 45 ± 0. 52	110. 20 ± 0. 64	737. 1 ± 2. 6
Fig. 6b	Steffisgang
IUP-9268	Stalactite	1067. 504 ± 0. 042	51. 510 ± 0. 062	0. 8940 ± 0. 0013	56. 87 ± 0. 11	132. 45 ± 0. 65	161. 19 ± 0. 48	160. 11 ± 0. 79	208. 3 ± 1. 1
IUP-9269	Stalactite	650. 570 ± 0. 029	122. 59 ± 0. 17	0. 9270 ± 0. 0019	15. 090 ± 0. 037	248. 62 ± 0. 94	138. 03 ± 0. 58	134. 3 ± 1. 9	363. 4 ± 2. 4

^aActivity ratios; _corr. corrected for detrital Th with ²³²Th/²³⁸U weight ratio of 3.8 ± 1.9 and ²³⁴U, ²³⁸U and ²³⁰Th in secular equilibrium; 1ka = 1000 years; all measurements performed with a ThermoFischer Neptune Plus MC-ICP MS; errors 2σ; ^bages not shown in Fig. 10

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