Sequential extraction procedure to obtain the composition of terrigenous detritus in marine sediments
Margit H. Simon,
Daniel P. Babin,
Steven L. Goldstein,
Merry Yue Cai,
Tanzhuo Liu,
Xibin Han,
Anne A. Haws,
Matthew Johns,
Caroline Lear,
Sidney R. Hemming
Affiliations
Margit H. Simon
NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway; SFF Centre for Early Sapiens Behaviour (SapienCE), University of Bergen, Post Box 7805, 5020, Bergen, Norway; Lamont-Doherty Earth Observatory of Columbia University, 61 Rt 9W, Palisades, New York 10964-8000, USA; Corresponding author at: NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway.
Daniel P. Babin
Lamont-Doherty Earth Observatory of Columbia University, 61 Rt 9W, Palisades, New York 10964-8000, USA; Department of Earth and Environmental Sciences, Columbia University, New York NY USA
Steven L. Goldstein
Lamont-Doherty Earth Observatory of Columbia University, 61 Rt 9W, Palisades, New York 10964-8000, USA; Department of Earth and Environmental Sciences, Columbia University, New York NY USA
Merry Yue Cai
Lamont-Doherty Earth Observatory of Columbia University, 61 Rt 9W, Palisades, New York 10964-8000, USA
Tanzhuo Liu
Lamont-Doherty Earth Observatory of Columbia University, 61 Rt 9W, Palisades, New York 10964-8000, USA
Xibin Han
Key Laboratory of Submarine Geosciences, SOA Second Institute of Oceanography, Hangzhou, China
Anne A. Haws
Department of Earth and Environmental Sciences, Boston College, Chestnut Hill, MA 02467, USA
Matthew Johns
Lamont-Doherty Earth Observatory of Columbia University, 61 Rt 9W, Palisades, New York 10964-8000, USA; Department of Earth and Environmental Sciences, Columbia University, New York NY USA
Caroline Lear
School of Earth and Ocean Sciences, Cardiff University, Park Pl, Cardiff CF10 3AT UK
Sidney R. Hemming
Lamont-Doherty Earth Observatory of Columbia University, 61 Rt 9W, Palisades, New York 10964-8000, USA; Department of Earth and Environmental Sciences, Columbia University, New York NY USA
The geochemical and isotopic composition of terrigenous clays from marine sediments can provide important information on the sources and pathways of sediments. In order to extract the detrital signal from bulk marine sediments, standard sediment leaching methods are commonly applied to remove carbonate and ferromanganese oxides. In comparison to most previous studies that aimed to extract the terrestrial signal from marine sediments we additionally applied a CsCl wash throughout the sample preparation Simon et al. [1]. The motivation behind that extra step, not frequently applied, is to remove ions that are gained on the clay surface due to re-adsorption of authigenic trace metals in the ocean or during the leaching procedure and thus could alter the original composition of the detrital fraction if no cation exchange was applied. Here we present an improved and detailed step-by-step leaching protocol for the extraction of the detrital fraction of bulk deep-sea sediments including commonly used buffered acetic acid and acid-reductive mix solutions including a final cation exchange wash. • standard method to remove carbonate and ferromanganese oxides and Stokes settling to isolate the clay fractions • additional application of cation cation exchange wash (CsCl) • removal of ions that are gained on the clay surface due to adsorption of authigenic trace metals in the ocean or during the leaching procedure
