noaa-cave-21060 Botuverá Cave, Brazil High-resolution Trace Metal and Stable Isotope Speleothem Data covering the last 10,000 Years Bernal, J.P.; Cruz, F.W.; Strikis, N.; Wang, X.; Deininger, M.; Catunda, M.C.A.; Ortega-Obregón, C.; Cheng, H.; Edwards, R.L.; Auler, A.S. Botuverá Cave, Brazil High-resolution Trace Metal and Stable Isotope Speleothem Data covering the last 10,000 Years 2016-12-21 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/21060 Investigator J.P. Bernal Investigator F.W. Cruz Investigator N. Strikis Investigator X. Wang Investigator M. Deininger Investigator M.C.A. Catunda Investigator C. Ortega-Obregón Investigator H. Cheng Investigator R.L. Edwards Investigator A.S. Auler earth science paleoclimate speleothems delta 13C,calcite,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null earth science paleoclimate speleothems age,null,null,calendar year before present,null,speleothems,null,null,N,null earth science paleoclimate speleothems strontium/calcium,calcite,null,mole per mole,null,speleothems,raw,laser ablation,N,null earth science paleoclimate speleothems barium/calcium,calcite,null,mole per mole,null,speleothems,raw,laser ablation,N,null earth science paleoclimate speleothems magnesium/calcium,calcite,null,mole per mole,null,speleothems,raw,laser ablation,N,null earth science paleoclimate speleothems delta 18O,calcite,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null earth science paleoclimate speleothems trace metals earth science paleoclimate speleothems oxygen isotopes earth science paleoclimate speleothems geochemistry geoscientificInformation 9117 cal yr BP -54 cal yr BP Complete -27.22 -27.22 -49.16 -49.16 230 230 Continent South America Brazil Botuverá Cave>LATITUDE -27.22>LONGITUDE -49.16 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Bernal, J.P., Francisco W. Cruz, Nicolás, M. Stríkis, Xianfeng Wang, Michael Deininger, Maria Carolina A. Catunda, C. Ortega-Obregón, Hai Cheng, R. Lawrence Edwards, and Augusto S. Auler 2016 Earth and Planetary Science Letters 450 186–196 10.1016/j.epsl.2016.06.008

A Holocene stalagmite from Botuverá Cave, southeastern Brazil was analyzed by LA-ICPMS for Mg/Ca, Sr/Ca, Ba/Ca. The observed variability in the record was demonstrated to be modulated by prior calcite precipitation, and, thus, is interpreted to reflect monsoon intensity. We find that the calcite d18O is strongly correlated with Sr/Ca, indicating that atmospheric circulation over South America and monsoon intensity have been tightly correlated throughout most of the Holocene, both directly responding to solar precession. Comparison with other contemporaneous high-resolution hydroclimate records reveals that SAMS has shown a degree of complexity during the Holocene not previously detected, with periods where the South American Convergence Zone (SACZ) expanded to cover most of the South American sub-continent, and coincident with periods of low-SST in the north Atlantic. We also detect periods where rainfall amount in northeastern and southeastern Brazil are markedly anti-phased, suggesting a north-south migration of SACZ, which it appears to be mediated by solar irradiance. The high-resolution nature of our record allow us to examine the effect that Holocene climate anomalies had upon SAMS dynamics and hydroclimate in southeastern Brazil, in particular the 8.2 ka event and the Little Ice Age. In addition to confirm the internal structure of the events, we also detect the possible consequences of the climatic anomalies upon ocean-atmosphere interactions through its effects upon SAMS. STUDY NOTES: d18O and d13C measurement precision: 0.1 per mil. Mg/Ca measurement precision ~5%, Sr/Ca measurement precision ~7%, Ba/Ca measurement precision ~10%.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/bernal2016/bernal2016-chem.txt Formatted Text File; Botuvera Cave Mg/Ca, Sr/Ca and Ba/Ca Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/bernal2016/bernal2016-isot.txt Formatted Text File; Botuvera Cave Stable Isotope Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11