Geochemistry of sediments from the mid-oceanic Kolbeinsey Ridge

DOI

In order to assess recent submarine volcanic contributions to the sediments from the active Kolbeinsey Ridge, surface samples were analyzed chemically. The contribution of major and trace elements studied differ within the study area.A statistical analysis of the geochemical variables using factor analysis and cluster method allows to distinguish possible sample groups. Cluster method identifies three distinct sediment groups located in different areas of sedimentation.Group 1 is characterized by highest contents of Fe2O3, V, Co, Ni, Cu and Zn demonstrating the input of volcaniclastic material. Group 2 comprises high values of CaCO3, CaO and Sr representing biogenic carbonate. Group 3 is characterized by the elements K, Rb, Cs, La and Pb indicating the terrigenous component.The absolute percentage of the volcanic, biogenic and terrigenous components in the bulk sediments was calculated by using a normative sediment method. The highest volcanic component (> 60% on a carbonate free basis) is found on the ridge crest. The biogenic component is highest (10-30%) in the eastern part of the Spar Fracture Zone influenced by the East Iceland Current. Samples from the western and southeastern region of the study area contain more than 90% of terrigenous component which appears to be mainly controlled by input of ice-rafted debris.

Supplement to: Lackschewitz, Klas Sven; Wallrabe-Adams, Hans-Joachim; Garbe-Schönberg, Dieter (1994): Geochemistry of surface sediments from the mid-oceanic Kolbeinsey Ridge, north of Iceland. Marine Geology, 121(1-2), 105-119

Identifier
DOI https://doi.org/10.1594/PANGAEA.735769
Related Identifier IsSupplementTo https://doi.org/10.1016/0025-3227(94)90160-0
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.735769
Provenance
Creator Lackschewitz, Klas Sven; Wallrabe-Adams, Hans-Joachim ORCID logo; Garbe-Schönberg, Dieter ORCID logo
Publisher PANGAEA
Publication Year 1994
Funding Reference Fourth Framework Programme https://doi.org/10.13039/100011105 Crossref Funder ID MAS3980185 https://cordis.europa.eu/project/id/MAS3980185 Quaternary Environment of the Eurasian North
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 27 datasets
Discipline Earth System Research
Spatial Coverage (-18.922W, 67.060S, -16.428E, 69.198N)
Temporal Coverage Begin 1988-06-02T10:30:00Z
Temporal Coverage End 1989-04-15T00:00:00Z