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Alteration of the upper oceanic crust, DSDP, site 417: Mineralogy and chemistry
Alt, J.C.; Honnorez, J. (1984). Alteration of the upper oceanic crust, DSDP, site 417: Mineralogy and chemistry. Contrib. Miner. Petrol./Beitr. Mineral. Petrol. 87(2): 149-169
In: Contributions to Mineralogy and Petrology = Beiträge zur Minerologie und Petrologie. Springer: Heidelberg; Berlin. ISSN 0010-7999; e-ISSN 1432-0967, more
Peer reviewed article  
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Keywords
    Chemistry > Geochemistry
    Hydrothermal activity > Basalt-seawater interaction
    Mineralogy
    Rocks > Igneous rocks > Volcanic rocks > Basalts
    Marine/Coastal
Authors  Top 
  • Alt, J.C.
  • Honnorez, J.
Abstract
    Basalts from DSDP Site 417 (109 Ma) exhibit the effects of several stages of alteration reflecting the evolution of seawater-derived solution compositions and control by the structure and permeability of the crust. Characteristic secondary mineral assemblages occur in often superimposed alteration zones within individual basalt fragments. By combining bulk rock and single phase chemical analyses with detailed mineralogic and petrographic studies, chemical changes have been determined for most of the alteration stages identified in the basalts.
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