Fensterer, Claudia; Scholz, Denis; Hoffmann, Dirk L; Mangini, Augusto; Pajon, Jesus M (2010): (Supplementary Table 1) 230Th/U results for stalagmite Cuba Grande (CG) from Pinar del Rio [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.736630, Supplement to: Fensterer, C et al. (2010): 230Th/U-dating of a late Holocene low uranium speleothem from Cuba. IOP Conference Series: Earth and Environmental Science, 9(1), 012015, https://doi.org/10.1088/1755-1315/9/1/012015
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
We present 22 U-series ages for a stalagmite from north-western Cuba based on multi-collector inductively coupled plasma mass spectrometry (MC-ICPMS) and thermal ionisation mass spectrometry (TIMS). Our results reveal that the stalagmite continuously grew within the last ~1400a. Low uranium content of the sample and thus, extremely low 230Th concentrations limit the precision and accuracy of 230Th/U-dating by TIMS. Samples measured by MC-ICPMS show a high variability of 232Th content along the growth axis with some sections significantly affected by initial 230Th from a detrital phase. An a-priori bulk earth ratio for (238U/232Th) cannot be used to accurately account for this initial 230Th. Using an age model based on the 230Th/U ages determined on samples with low or negligible 232Th concentration, we find that the (238U/232Th) activity ratio of the detrital phase is an order of magnitude larger than the bulk earth value, indicating the importance of an accurately determined correction factor.
Project(s):
Integrierte Analyse zwischeneiszeitlicher Klimadynamik (INTERDYNAMIK)
Funding:
German Research Foundation (DFG), grant/award no. 25575884: Integrierte Analyse zwischeneiszeitlicher Klimadynamik
Coverage:
Latitude: 22.383300 * Longitude: -83.966700
Minimum DISTANCE: 1.30 cm * Maximum DISTANCE: 72.00 cm
Event(s):
Comment:
Data acquired through subproject CaribClim (Control of seasonality and interannual to centennial climate in the Caribbean during the Holocene - Combining coral records, stalagmite records and climate models)
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
351 data points