Proc. IODP, 339, Data report: IODP Expedition 339 Site U1391: an improved splice and preliminary age model on the basis of XRF data

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Chapter contents Abstract Introduction Methods and materials Results Acknowledgments References Figures F1. Log Ca/Ti records. F2. Log Ca/Ti and Ca/Fe records. F3. Log Ca/Ti vs. age. Tables T1. Composite and corrected composite depth offsets. T2. Depth and age tie points. PDF file			Previous \| Next doi:10.2204/iodp.proc.339.203.2017 Data report: IODP Expedition 339 Site U1391: an improved splice and preliminary age model on the basis of XRF data¹ F. Abrantes,^2, ^3, ⁴ C. Santos,^2, ^3, ^4, ⁵ C. Ventura,^2, ³ A. Voelker,^2, ⁴ and U. Röhl⁵ Abstract With the objective to reconstruct past primary production on the southwest Portuguese margin at orbital and millennial timescales through the Pleistocene, we chose to compare two sites recovered during Expedition 339 at similar latitude but different distances to the coast (Sites U1385 and U1391). Site U1385 has a well-established chronology, but for Site U1391 no isotope data are yet available. In order to develop a correct chronology without isotope data, we performed XRF analysis of cores from Holes U1391A and U1391B between 76.51 and 205.77 mbsf. With these data, in particular using log(Ca/Ti) and log(Ca/Fe), it was possible to enhance the Site U1391 splice and to establish an age model based on the correlation to the well-defined and robust Site U1385 age model. ¹ Abrantes, F., Santos, C., Ventura, C., Voelker, A., and Röhl, U., 2017. Data report: IODP Expedition 339 Site U1391: an improved splice and preliminary age model on the basis of XRF data. In Stow, D.A.V., Hernández-Molina, F.J., Alvarez Zarikian, C.A., and the Expedition 339 Scientists, Proceedings of the Integrated Ocean Drilling Program, 339: Tokyo (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.339.203.2017 ² Divisão de Geologia e Georecursos Marinhos, Instituto Português do Mar e da Atmosfera (IPMA), Rua Alfredo Magalhães Ramalho 6, 1495-006 Lisboa, Portugal. Correspondence author: fatima.abrantes@ipma.pt ³ Also at CIIMAR, Universidade do Porto, Rua dos Bragas 287, 4050-123 Porto, Portugal. ⁴ Also at CCMAR, Centro de Ciencias do Mar, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal. ⁵ MARUM, Universität Bremen, Leobener Strasse, 28355 Bremen, Germany. Initial receipt: 10 March 2016 Acceptance: 5 January 2017 Publication: 28 February 2017 MS 339-203 Top of page \| Previous \| Next