Middle to late Eocene carbonate accumulation rates in the Pacific, Atlantic, Indian, and Southern Oceans


Sedimentary records from the equatorial Pacific show that the deepening of the carbonate compensation depth (depth below which the calcium carbonate flux to the seafloor is balanced by dissolution) at the Eocene/Oligocene boundary (~33.9 Ma) was preceded by several episodes of high and low carbonate accumulation rates. However, data from other basins are scarce. Here, we report middle-late Eocene carbonate accumulation rates from sites located in the Pacific, Atlantic, Indian, and Southern Oceans. Our results show that the calcium carbonate burial was geographically, bathymetrically, and temporally heterogenous suggesting the fundamental role of surface calcium carbonate production in driving middle-late Eocene carbonate accumulation rates. Our data also suggest that an increase in ocean ventilation might have influenced calcium carbonate preservation at depths > 2500 m.

DOI https://doi.org/10.1594/PANGAEA.934247
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.934247
Creator Borrelli, Chiara; Katz, Miriam E; Toggweiler, J Robbie
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2021
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Language English
Resource Type Collection of Datasets; Collection
Format application/zip
Size 13 datasets
Discipline Earth System Research
Spatial Coverage (-135.367W, -64.517S, 168.337E, 51.450N)
Temporal Coverage Begin 1987-01-16T08:00:00Z
Temporal Coverage End 2003-04-03T13:30:00Z