REE mobility due to alteration of Indian Ocean basalt

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doi: 10.1139/e85-201
Author(s): Seifert, Karl E.; Cole, Melanie R. W.; Brunotte, Dale A.
Author Affiliation(s): Primary:
Iowa State Univ., Dep. Earth Sci., Ames, IA, United States
Volume Title: Canadian Journal of Earth Sciences Revue Canadienne des Sciences de la Terre
Source: Canadian Journal of Earth Sciences = Revue Canadienne des Sciences de la Terre, 22(12), p.1884-1887. Publisher: National Research Council of Canada, Ottawa, ON, Canada. ISSN: 0008-4077 CODEN: CJESAP
Note: In English with French summary. 22 refs.; illus. incl. 2 tables
Summary: Indian Ocean basalts from DSDP site 249 on the Mozambique Ridge exhibit a progressive up-hole increase in alteration and Fe2O3/FeO and decrease in MgO and density over the approx 3.5 m of recovered core. Abrupt increases in H2O+ and K2O and a decrease in CaO relative to lower basalt samples occur in the uppermost sample. These up-hole changes are accompanied by increasing REE and LREE/HREE and the development of a pronounced negative Ce anomaly. A rough estimate of the magnitude of chemical change is obtained by assuming constant Lu.
Year of Publication: 1985
Research Program: DSDP Deep Sea Drilling Project
Key Words: 02 Geochemistry; 05 Petrology, Igneous and Metamorphic; Alteration; Basalts; DSDP Site 249; Deep Sea Drilling Project; Geochemistry; Halmyrolysis; Igneous rocks; Indian Ocean; Lava; Leg 25; Major elements; Metals; Migration of elements; Mobility; Mozambique Ridge; Rare earths; Trace elements; Volcanic rocks; Western Indian Ocean
Coordinates: S310000 S290000 E0400000 E0350000
Record ID: 1986011199
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom