Carbonate content analyses and accumulation rate data for the marine isotopic stage (MIS) 5, MIS 9, MIS KM5 and MCO, ODP Site 154-927, Ceara Rise, tropical Atlantic Ocean


Total carbon measurement (LECO CS744 elemental analyser, Bremen University). The analyses were performed by heating 0.1 g of homogenised material in a ceramic dish and measuring the resulting CO2 in IR cells. The carbonate content has been calculated as the difference between the total carbon content and the organic carbon content, measured in a second sample that was pre-treated with hydrochloric acid to remove carbonates. Both measurements have an accuracy of 0.001 mg (1 ppm) or 0.5 % relative standard deviation (RSD). The inorganic carbon was then converted to carbonate content using the molecular mass of calcium carbonate. The carbonate content data were combined with dry bulk density (DBD) and sedimentation rate (SR, this study) to calculate the carbonate accumulation rate (CaCO3 AR) as CaCO3 AR = (CaCO3 % / 100) x DBD x SR for the four time intervals MIS 5, MIS 9, MIS KM5 and MCO for the Leg 154, Site 927, Ceara Rise, tropical Atlantic Ocean. The composite depths and age model presented are from this study.

Related Identifier
Related Identifier
Metadata Access
Creator Cornuault, Pauline; Westerhold, Thomas ; Pälike, Heiko ; Bickert, Torsten ; Baumann, Karl-Heinz; Kucera, Michal
Publisher PANGAEA
Publication Year 2022
Funding Reference German Science Foundation, 390741603
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 5481 data points
Discipline Earth System Research
Spatial Coverage (-44.481 LON, 5.463 LAT); South Atlantic Ocean
Temporal Coverage Begin 1994-02-28T00:00:00Z
Temporal Coverage End 1994-03-04T00:00:00Z