Clay Mineral-Brine Interactions During Evaporite Diagenesis: Lanthanide Distribution in WIPP Samples

  • J. K. Register
  • D. G. Brookins
  • M. E. Register
  • S. J. Lambert
Part of the Advances in Nuclear Science & Technology book series (ANST)


Clay minerals are common accessory constitutents of the bedded evaporite sequence at and near the WIPP site, southeastern New Mexico. Many of these are detrital in origin as documented by preservation of pre-emplacement ages, grain size and other criteria (1). Some phyllosilicates disseminated throughout the evaporite sequence have either formed by authigenic processes or by diagenetic reactions between small amounts of detritus and brine (2). In order to study the behavior of clay minerals considered for overpack in salt media, we have examined the detrital clay minerals by scanning electron microscopy (SEM), neutron activation analysis (NAA), X-ray diffraction (XRD) and supporting techniques (3). While special emphasis is placed on lanthanide elements, data for other trace and some major elements are reported as well. Fourteen samples were selected which, from SEM and XRD examination, showed clear evidence for some interaction between clay minerals and brine.


Clay Mineral Neutron Activation Analysis Pelagic Sediment Evaporite Mineral Evaporite Sequence 
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Copyright information

© Springer Science+Business Media New York 1980

Authors and Affiliations

  • J. K. Register
    • 1
  • D. G. Brookins
    • 1
  • M. E. Register
    • 1
  • S. J. Lambert
    • 2
  1. 1.Department of GeologyUniversity of New MexicoAlbuquerqueUSA
  2. 2.Sandia LaboratoriesAlbuquerqueUSA

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