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. 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. 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 earth science/paleoclimate/speleothems earth science/paleoclimate/speleothems (Botuverá Cave>LATITUDE -27.22>LONGITUDE -49.16) 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%. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Bernal, J.P. Investigator : Cruz, F.W. Investigator : Strikis, N. Investigator : Wang, X. Investigator : Deininger, M. Investigator : Catunda, M.C.A. Investigator : Ortega-Obregón, C. Investigator : Cheng, H. Investigator : Edwards, R.L. Investigator : Auler, A.S. 2016-12-21 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/21060 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/bernal2016/bernal2016-chem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/bernal2016/bernal2016-isot.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/bernal2016/bernal2016-chem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/bernal2016/bernal2016-isot.txt English https://www.ncdc.noaa.gov/paleo/study/21060 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/bernal2016/bernal2016-chem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/bernal2016/bernal2016-isot.txt 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. Auler2016High-resolution Holocene South American monsoon history recorded by a speleothem from Botuverá Cave, BrazilEarth and Planetary Science Letters450186–19610.1016/j.epsl.2016.06.008 START YEAR: 9117 cal yr BP * END YEAR: -54 cal yr BP -49.16 -27.22 -49.16 -27.22