(Table 1.15) Composition of glassy basalts from the north part of the Bougault anomaly, Mid-Atlantic Ridge 15°N


Structure and composition of sub-surface bottom sediments from the southwest Barents Sea have been under study. The study has revealed heterogeneity of sediment structure resulted from temporal irregularity and variability of sedimentation processes. The study of the heavy minerals from 0.1-0.01 mm grain size fraction has shown prevalence of green hornblende, epidote, garnet, and ilmenite in all types of sediments; these minerals are the basis of terrigenous-mineralogical province. At the same time in different areas local terrigenous-mineralogical associations have been identified. Clay mineral composition of in the sediments was quite uniform: biotite, chlorite, hydromica, smectite. Despite this, a number of features indicating initial stages of clay mineral transformation has been identified. Differences in material composition and structure of the studied sediments are associated with rapid change in paleogeographic situation on the land - ice cover melting on the Kola Peninsula and subsequent Holocene climatic situation.

Contents are determined for temperature 1200°C in platinum containers. 0 = not found; >0 = traces.

DOI https://doi.org/10.1594/PANGAEA.778318
Related Identifier https://doi.org/10.1594/PANGAEA.778319
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.778318
Creator Sharapov, V N; Akimtsev, V A; Dorovskii, V N; Perepechko, Yu V; Cherepanov, A N
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2000
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 473 data points
Discipline Chemistry
Spatial Coverage (-46.724W, 14.067S, -44.790E, 15.864N); Cape Verde Fault Zone; Central Atlantic