Stable isotope geochemistry as main tool to unravel Eocene-Oligocene paleoclimate and paleoceanography

• Grant number: 12/15995-5
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: December 01, 2013
• End date: October 10, 2016
• Field of knowledge: Physical Sciences and Mathematics - Oceanography - Chemical Oceanography
• Principal Investigator: Luigi Jovane
• Grantee: Martino Giorgioni
• Host Institution: Instituto Oceanográfico (IO). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

This project will apply carbon and oxygen isotope geochemistry (d13C and d18O) on carbonate sediments, in order to perform detailed paleocenaographic reconstructions for the Eocene-Oligocene period. High-resolution d13C and d18O records will be obtained from several archives in different part of the world. A robust chemostratigraphic reference curve will be established and the major paleoceanographic and paleoclimatic events will be characterized from local to global scale. Further sedimentological and geochemical analyses will complement the paleoceanographic interpretation. It expected to obtain an enhanced reconstruction of the Eocene-Oligocene climatic history and new insights on themechanisms that drove the global climate during the transition from greenhouse to icehouseconditions at that time. This Project proposes to obtain and examine high-quality, continuous stratigraphic records of stable isotopes from targeted time intervals to better understand (1) how physical and biological systems responded to elevated and varying levels of atmospheric CO2, and (2) how ocean circulation and carbon cycle behaved during warmer climates. An integrated data-model science approach will offer new insight into the onset, early evolution, and subsequent behavior of oceans and ice sheets in Antarctica inresponse to underlying tectonic change, landscape evolution, orbital forcing, and varying levels of atmospheric CO2. Particular attention will be given to the link between tectonic and oceanographic changes; the link between orbital forcing, C-cycle, and climate; characterization of the rapid "hyperthermals"; and calibration of the Milankovitch orbital signal between isotopes and magnetic properties in sedimentary archives. This work is tightly connected to the ongoing research of Prof. Luigi Jovane, carried out at the Oceanographic Institute of the University of Sao Paulo in the last years.

Scientific publications

(10)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SAVIAN, JAIRO F.; JOVANE, LUIGI; GIORGIONI, MARTINO; IACOVIELLO, FRANCESCO; RODELLI, DANIEL; ROBERTS, ANDREW P.; CHANG, LIAO; FLORINDO, FABIO; SPROVIERI, MARIO. Environmental magnetic implications of magnetofossil occurrence during the Middle Eocene Climatic Optimum (MECO) in pelagic sediments from the equatorial Indian Ocean. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, v. 441, n. 1, SI, p. 212-222, JAN 1 2016. (11/22018-3, 12/18304-3, 12/15995-5)

GIORGIONI, MARTINO; WEISSERT, HELMUT; BERNASCONI, STEFANO M.; HOCHULI, PETER A.; KELLER, CHRISTINA E.; COCCIONI, RODOLFO; PETRIZZO, MARIA ROSE; LUKENEDER, ALEXANDER; GARCIA, THERESE I.. Paleoceanographic changes during the Albian-Cenomanian in the Tethys and North Atlantic and the onset of the Cretaceous chalk. GLOBAL AND PLANETARY CHANGE, v. 126, p. 46-61, MAR 2015. (12/15995-5)

GIORGIONI, MARTINO; JOVANE, LUIGI; REGO, ERIC S.; RODELLI, DANIEL; FRONTALINI, FABRIZIO; COCCIONI, RODOLFO; CATANZARITI, RITA; OZCAN, ERCAN. Carbon cycle instability and orbital forcing during the Middle Eocene Climatic Optimum. SCIENTIFIC REPORTS, v. 9, JUN 27 2019. (11/22018-3, 15/16501-4, 12/15995-5)

LUKENEDER, ALEXANDER; SOTAK, JAN; JOVANE, LUIGI; GIORGIONI, MARTINO; SAVIAN, JAIRO F.; HALASOVA, EVA; REHAKOVA, DANIELA; JOZSA, STEFAN; KROH, ANDREAS; FLORINDO, FABIO; et al. Multistratigraphic records of the Lower Cretaceous (Valanginian-Cenomanian) Puez key area in N. Italy. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, v. 447, p. 65-87, APR 1 2016. (11/22018-3, 12/15995-5)

GIORGIONI, MARTINO; TIRABOSCHI, DANIELE; ERBA, ELISABETTA; HAMANN, YVONNE; WEISSERT, HELMUT. Sedimentary patterns and palaeoceanography of the AlbianMarne a Fucoidi Formation (Central Italy) revealed byhigh-resolution geochemical and nannofossil data. SEDIMENTOLOGY, v. 64, n. 1, p. 16-pg., 2017-01-01. (12/15995-5)

GIORGIONI, MARTINO; TIRABOSCHI, DANIELE; ERBA, ELISABETTA; HAMANN, YVONNE; WEISSERT, HELMUT. Sedimentary patterns and palaeoceanography of the AlbianMarne a Fucoidi Formation (Central Italy) revealed byhigh-resolution geochemical and nannofossil data. SEDIMENTOLOGY, v. 64, n. 1, SI, p. 111-126, JAN 2017. (12/15995-5)

REGO, E. S.; JOVANE, L.; HEIN, J. R.; SANT'ANNA, L. G.; GIORGIONI, M.; RODELLI, D.; OZCAN, E.. Mineralogical evidence for warm and dry climatic conditions in the Neo-Tethys (eastern Turkey) during the middle Eocene. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, v. 501, p. 45-57, JUL 15 2018. (11/22018-3, 15/16501-4, 12/15995-5, 16/02288-0)

RODELLI, D.; JOVANE, L.; OZCAN, E.; GIORGIONI, M.; COCCIONI, R.; FRONTALINI, F.; REGO, E. S.; BROGI, A.; CATANZARITI, R.; LESS, GY.; et al. High-resolution integrated magnetobiostratigraphy of a new middle Eocene section from the Neotethys (Elazig Basin, eastern Turkey). GEOLOGICAL SOCIETY OF AMERICA BULLETIN, v. 130, n. 1-2, p. 193-207, JAN 2018. (11/22018-3, 12/21212-3, 12/15995-5)

JOVANE, LUIGI; FIGUEIREDO, JORGE J. P.; ALVES, DANIEL P. V.; IACOPINI, DAVID; GIORGIONI, MARTINO; VANNUCCHI, PAOLA; MOURA, DENISE S.; BEZERRA, FRANCISCO H. R.; VITAL, HELENICE; RIOS, ISABELLA L. A.; et al. Seismostratigraphy of the Ceara Plateau: Clues to Decipher the Cenozoic Evolution of Brazilian Equatorial Margin. Frontiers in Earth Science, v. 4, OCT 25 2016. (11/22018-3, 12/15995-5)

SAVIAN, JAIRO F.; JOVANE, LUIGI; GIORGIONI, MARTINO; IACOVIELLO, FRANCESCO; RODELLI, DANIEL; ROBERTS, ANDREW P.; CHANG, LIAO; FLORINDO, FABIO; SPROVIERI, MARIO. Environmental magnetic implications of magnetofossil occurrence during the Middle Eocene Climatic Optimum (MECO) in pelagic sediments from the equatorial Indian Ocean. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, v. 441, p. 11-pg., 2016-01-01. (12/15995-5, 11/22018-3, 12/18304-3)