Unknown
PANGAEA
In:
Supplement to: Tual, E; Jahn, Bor-Ming; Bougault, Henri; Joron, Jean Louis (1985): Geochemistry of basalts from Hole 504B, Leg 83, Costa Rica Rift. In: Anderson, RN; Honnorez, J; Becker, K; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 83, 201-214, https://doi.org/10.2973/dsdp.proc.83.107.1985
Publication Date:
2023-05-12
Description:
The major element geochemistry of basalts recovered from Leg 83, Hole 504B, shows the typical features of midocean ridge basalts (MORB). The range of variation in their composition, together with the behavior of compatible trace elements (Co, Ni, Cr), indicate the well-known relative abundance of minerals that crystallize from these basaltic liquids: plagioclase, olivine, pyroxene, and spinel in decreasing abundance. The hygromagmaphile (or LILE or incompatible) elements are extremely depleted in light rare earths. Nevertheless, some units show flat and enriched REE patterns. These patterns, together with the values of the La/Ta ratio, are interpreted in terms of local mantle heterogeneity.
Keywords:
Deep Sea Drilling Project; DSDP
Type:
Dataset
Format:
application/zip, 3 datasets
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