Ampuero Grandez, Angela; Stríkis, Nicolas M; Meckler, Anna Nele; Krüger, Yves; Vuille, Mathias; Vonhof, Hubert B; Pasqualetto, Leonardo; Mayta, Victor; M Medina, N Melissa; Utida, Giselle; Zhang, Haiwei; Cheng, Hai; Edwards, R Lawrence; Travassos, Luiz; Piacsek, Patricia; Akabane, Thomas K; Cruz, Francisco William (2026): Microthermometry measurements of stalagmite the Rei do Mato stalagmite REI 7-2 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.995231
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Published: 2026-06-05 • DOI registered: 2026-06-05
Abstract:
This dataset presents a cave paleotemperature reconstruction over the last glacial termination from stalagmite REI 7-2 from Rei do Mato Cave in Minas Gerais State, central-eastern South America (19.50°S, 44.28°W, 800 masl).
Microthermometric measurements were performed on a Linkam THMSG600 heating/cooling stage attached to an Olympus BX51 microscope equipped with a 100x long-working-distance objective (Olympus LMPLFLN 100x/0.8) and a Leica DFC350 FX digital camera for visual observation. Each cave temperature represents the average Th∞ of ~40 individual fluid inclusions. Outliers were excluded from the statistical analysis using a 4-MAD criterion.
Keyword(s):
Supplement to:
Ampuero, Angela; Stríkis, Nicolas M; Meckler, Anna Nele; Krüger, Yves; Vuille, Mathias; Vonhof, Hubert B; Pasqualetto, Leonardo; Mayta, Víctor C; M Medina, N Melissa; Utida, Giselle; Zhang, Haiwei; Cheng, Hai; Edwards, R Lawrence; Travassos, L E P; Piacsek, Patricia; Akabane, Thomas K; Cruz, Francisco William (2026): Rapid warming in South America during the last deglaciation. Nature Communications, https://doi.org/10.1038/s41467-026-74093-x
References:
Cheng, Hai; Edwards, R Lawrence; Shen, Chuan-Chou; Polyak, Victor J; Asmerom, Yemane; Woodhead, Jon D; Hellstrom, John C; Wang, Yongjin; Kong, Xinggong; Spötl, Christoph; Wang, Xianfeng; Alexander, E Calvin (2013): Improvements in 230Th dating, 230Th and 234U half-life values, and U–Th isotopic measurements by multi-collector inductively coupled plasma mass spectrometry. Earth and Planetary Science Letters, 371-372, 82-91, https://doi.org/10.1016/j.epsl.2013.04.006
Edwards, R Lawrence; Chen, J H; Wasserburg, Gerald J (1987): 238U-234U-230Th-232Th systematics and the precise measurement of time over the past 500,000 years. Earth and Planetary Science Letters, 81(2-3), 175-192, https://doi.org/10.1016/0012-821X(87)90154-3
Krüger, Yves; Marti, Dominik; Staub, Rita Hidalgo; Fleitmann, Dominik; Frenz, Martin (2011): Liquid–vapour homogenisation of fluid inclusions in stalagmites: Evaluation of a new thermometer for palaeoclimate research. Chemical Geology, 289(1-2), 39-47, https://doi.org/10.1016/j.chemgeo.2011.07.009
Krüger, Yves; Pasqualetto, Leonardo; Fernandez, Alvaro; Cobb, Kim M; Meckler, Anna Nele (2025): Tropical temperature evolution across two glacial cycles derived from speleothem fluid inclusion microthermometry. Climate of the Past, 21(9), 1553-1584, https://doi.org/10.5194/cp-21-1553-2025
Lambeck, Kurt; Rouby, Hélène; Purcell, Anthony; Sun, Y; Sambridge, Malcom (2014): Sea level and global ice volumes from the Last Glacial Maximum to the Holocene. Proceedings of the National Academy of Sciences, 111(43), 15296-15303, https://doi.org/10.1073/pnas.1411762111
Richards, David A (2003): Uranium-series Chronology and Environmental Applications of Speleothems. Reviews in Mineralogy & Geochemistry, 52(1), 407-460, https://doi.org/10.2113/0520407
Scholz, Denis; Hoffmann, Dirk L (2011): StalAge – An algorithm designed for construction of speleothem age models. Quaternary Geochronology, 6(3-4), 369-382, https://doi.org/10.1016/j.quageo.2011.02.002
Funding:
Coverage:
Latitude: -19.500000 * Longitude: -44.280000
Date/Time Start: 2024-07-31T00:00:00 * Date/Time End: 2024-08-20T00:00:00
Minimum DISTANCE: 0.55 cm * Maximum DISTANCE: 34.75 cm
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample ID | Sample ID | ||||
| 2 | DISTANCE | Distance | cm | Geocode – Distance from the top of the stalagmite | ||
| 3 | AGE | Age | ka BP | Mean values | Geocode – StalAge mean age (ka BP = thousands of years before 1950). | |
| 4 | Age model | Age model | ka | 95% Confidence interval, upper limit (CI up) | StalAge 95% CI (ka BP = thousands of years before 1950). | |
| 5 | Age model | Age model | ka | 95% Confidence interval, lower limit (CI low) | StalAge 95% CI (ka BP = thousands of years before 1950). | |
| 6 | Temperature, cave | T cave | °C | derived | From ~30-40 individual fluid inclusions analyses | |
| 7 | Temperature, cave, standard error | T cave std e | ± | Calculated | 2 standard errors of the mean | |
| 8 | Temperature, cave, standard deviation | T cave std dev | ± | Calculated | 1 standard deviation | |
| 9 | Sea level, reconstructed | Sea lev reconst | m | According to Lambeck et al. (2014) | ||
| 10 | Sea level, uncertainty | Sea lev unc | ± | According to Lambeck et al. (2014) | 2 standard deviation | |
| 11 | δ18O, calcite | δ18O cal | ‰ PDB | Average | Average value from samples taken within the same growth layer | |
| 12 | δ180, calcite, standard deviation | δ18O cal std dev | ± | Calculated | 1 standard deviation from samples within the same growth layer | |
| 13 | δ18O, drip water | δ18O drip H20 | ‰ PDB | Calculated | vs. VSMOW, corrected for ice sheet-related global changes in seawater delta 18O | |
| 14 | δ18O, drip water, standard deviation | δ18O drip H20 std dev | ± | Calculated | 1 standard deviation of the mean dripwater delta 18O calculated using Monte Carlo (N=100,000) | |
| 15 | DATE/TIME | Date/Time | Geocode |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
252 data points