Stable silicon isotope of radiolarians and sponges from Middle Eocene Climatic Optimum (MECO) from ODP Site 207-1260, 171-1051 and IODP Site 371-U1511

Dataset

DOI

This dataset contains stable silicon isotope measurements of radiolarian tests and sponge spicules analyzed by MC-ICP-MS. Isotopic differences between radiolarian size fractions and morphotypes were also examined. The data contribute to a broader study aimed at reconstructing the marine silicon cycle during the Middle Eocene Climatic Optimum (MECO) in order to investigate changes in silicate weathering feedbacks and ocean circulation, using siliceous microfossils from IODP Site U1511, ODP Site 1260, and ODP Site 1051.

Identifier
DOI	https://doi.pangaea.de/10.1594/PANGAEA.993681
Metadata Access	https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.993681

Provenance
Creator	Ruchi ; Henehan, Michael J ; Frings, Patrick J ; Laub, Ollie; Penman, Donald E ; Frick, Daniel A ; Blanckenburg, Friedhelm von
Publisher	PANGAEA
Publication Year	2026
Funding Reference	German Research Foundation https://doi.org/10.13039/501100001659 Crossref Funder ID HE 8660/3
Rights	Creative Commons Attribution 4.0 International; Data access is restricted (moratorium, sensitive data, license constraints); https://creativecommons.org/licenses/by/4.0/
OpenAccess	false

Representation
Resource Type	Dataset
Format	text/tab-separated-values
Size	1123 data points
Discipline	Earth System Research
Spatial Coverage	(-54.544W, -37.561S, 160.316E, 30.053N); Blake Nose, North Atlantic Ocean; North Atlantic Ocean
Temporal Coverage Begin	1997-01-21T19:15:00Z
Temporal Coverage End	2003-02-12T23:45:00Z