Publication Date:
2024-03-15
Description:
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.
Keywords:
154-927; Accumulation rate, calcium carbonate; AGE; CaCO3; Calcium carbonate; Calculated; Carbon, organic, total; Carbon, standard deviation; Carbon, total; Carbonate accumulation rates; Carbonate Content; Ceara Rise; COMPCORE; Composite Core; Core; Cruise/expedition; Density, dry bulk; Depth, composite; DEPTH, sediment/rock; Elemental analyzer, LECO, CS744; Half; Hole; Joides Resolution; Leg154; MCO; MIS 5; MIS 9; MIS KM5; Neogene; Ocean Drilling Program; ODP; Offset; Period; PWP; Quaternary; Sample code/label; Section; Sedimentation rate; Shape; Site; South Atlantic Ocean; tropical Atlantic; Type; Volume
Type:
Dataset
Format:
text/tab-separated-values, 5481 data points
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