Core data from the Ocean Drilling Program legs 101-129

 leg : 109                section:  01        unit/subunit :  0001
 hole: 0669A              top int:   0 cm     observer code:  KUE 
 core:  001D              pieces : 1-2                           
 
 rock name:  APHYRIC BASALT
 
 contact  :  n/a
 
                         ***** MAIN COMMENTS *****                         
 Glass: None, no contacts.                                                  
 
                          ***** PHENOCRYSTS *****                          
 phenocryst name    %    size            description        
 Plagioclase          1  2 mm             Euhedral, fresh                   
                                                                            
                                                                            
                                                                            
                                                                            
 
 Piece 2: One plagioclase phenocryst near lower edge.
 
                          ***** GROUNDMASS *****                           
 Uniformly fine grained.                                                    
                             ***** COLOR *****                             
 Gray                                                                       
                           ***** VESICLES *****                            
      percent: 2-3  
         size: 0.2-1.0 mm                              
        shape: Round, empty                            
 distribution: Homogeneous distribution                
     miaroles: ~25% of all voids, 0.1-0.5 mm sub-circular to elongate-irregular, empty or 
               lined by bluish smectite in alteration halos, homogeneou s distribution.   
 Filled with microcrystalline groundmass, or lined by bluish smectite 
 in alteration halos.
                           ***** STRUCTURE *****                           
 n/a                                                                        
                          ***** ALTERATION *****                           
 Fresh to slightly altered. Piece 1: Dark alteration halo 2-4 mm wide       
 developed parallel to edges; vesicles lined with bluish smectite, iron     
 oxide/clay mixture, yellow brown clay and zeolites; edges coated with      
 yellow brown clay and zeolites. Piece 2: Dark alteration halo 2-25 cm wide 
 developed around outside of sample, vesicles lined with bluish smectite.   
                        ***** VEINS/FRACTURES *****                        
                                                                                        
 Piece 2 contains crack filled with yellow clay.
 

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These Web pages are from the Core Data from the Ocean Drilling Program Legs 101-129 CD-ROM produced in 2001 by the U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, National Geophysical Data Center, and collocated World Data Center for Marine Geology and Geophysics, Boulder. Data were compiled in cooperation with the U.S. Science Support Program, the Joint Oceanographic Institutions, Inc., and the U.S. National Science Foundation. Please see the NGDC privacy, disclaimer, and copyright notices. Additional ocean drilling data are available from NGDC and from the ODP/IODP.

questions to: carla.j.moore@noaa.gov