Volcanic rocks from Rosemary Bank (Rockall Trough, NE Atlantic)

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doi: 10.1016/0025-3227(80)90122-X
Authors:Dietrich, V. J.; Jones, E. J. W.
Volume Title:Marine Geology
Source:Marine Geology, 35(4), p.287-297. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0025-3227
Publication Date:1980
Note:In English. 19 refs.
Summary:A collection of basalts dredged from the southern flank of Rosemary Bank is described. All samples are highly altered, the introduction of large amounts of CaCO3 into the rocks being particularly notable. Normative calculations suggest that the basalts are transitional or mildly alkaline in character; the discrimination techniques of Pearce & Cann indicate oceanic affinities. Several trace elements appear to have been immobile during the process of secondary alteration and are used to infer the tectonic setting of Rosemary Bank at the time of its formation; a minimum age of Eocene is assigned. [T.R.]
Subjects:Affinities; Alteration; Basalts; Cenozoic; Chemical composition; Crust; Genesis; Geochemistry; Halmyrolysis; Igneous rocks; Lava; Major elements; Oceanic crust; Paleogene; Seamounts; Tertiary; Trace elements; Volcanic rocks; Atlantic Ocean; North Atlantic; Northeast Atlantic; Rockall Trough; Rosemary Bank
Coordinates:N585500 N593500 W0093000 W0110000
Abstract Numbers:83M/4690
Record ID:1980040603
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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