Lithology, colour and mineralogy of pelagic sediments from the Romanche fracture zone (RFZ) in the equatorial atlantic
Abstract
Sediment cores from the Romanche Fracture Zone (RFZ) in the equatorial Atlantic have been described visually and microscopically as well as analyzed by X-ray diffraction techniques in order to study the main controls on their lithology, colour and mineralogy. The sediments display graditional changes in colour, mineralogy and lithology. Water depth and biogenic dissolution appear to play an important role in controlling the lithology and mineralogy of the sediments. Distance from continental and volcanic sources of sediment appear to play secondary roles. Changes of colour downcore largely reflect variation in the Mn and Fe oxides content of the sediments.
URI
http://www.sciencedirect.com/science/article/pii/089953629290051Dhttp://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/26931
Citation
Journal of African Earth Sciences (and the Middle East) Volume 14, Issue 1, January 1992, Pages 13–23Publisher
Department of Geology, University of Nairobi