Oligocene-Miocene (24-20 Ma) biogenic carboante dissolution in the South China Sea

The spreadsheet contains main datasets for the carbonate micro and nannofossil analysis from IODP Site U1505 in the northern South China Sea, covering approximately 24-20.5 Ma: Coccolith assemblage data Fine-fraction carbonate carbon and oxygen isotope analysis (U1501 & 1505) Organic carbon content and isotope analysis Calculated alkalinity flux Benthic formainifera shell weight Coccolith morphometry The compressed files integrate the figures coccolith cuts from 115 samples (around 9,000 images in total) and 40 samples examined for benthic foraminiferal preservation (Cibicidoides mundulus). The dataset is complemented by: Photographs of C. mundulus tests with marked length measurements Raw data and images of individual coccolith cuts