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

DOI

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.

Identifier
DOI https://doi.org/10.1594/PANGAEA.934247
Related Identifier IsSupplementTo https://doi.org/10.1029/2020PA004168
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.934247
Provenance
Creator Borrelli, Chiara ORCID logo; Katz, Miriam E; Toggweiler, J Robbie ORCID logo
Publisher PANGAEA
Publication Year 2021
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Publication Series 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