NOAA NESDIS National Geophysical Data Center WDC MGG Seafloor Series Volume 2

Core data from the Ocean Drilling Program legs 101-129


 leg : 106                section:  01        unit/subunit :  0001
 hole: 0649C              top int:   0 cm     observer code:  KUE 
 core:  001D              pieces : 1-3                           
 
 rock name:  APHYRIC BASALT
 
 contact  :  n/a
 
                         ***** MAIN COMMENTS *****                         
 Glass: glassy margin, fresh, no contacts.                                  
 
                          ***** PHENOCRYSTS *****                          
 phenocryst name    %    size            description        
 Plagioclase        n/a  2 mm             Euhedral, fresh, 3 phenocrysts on 
                                          outer surface                     
                                                                            
                                                                            
                                                                            
                                                                            
 
 Irregular distribution.
 
                          ***** GROUNDMASS *****                           
 Glassy to very fine grained.                                               
                             ***** COLOR *****                             
 Gray                                                                       
                           ***** VESICLES *****                            
      percent: 3    
         size: < 1 mm                                  
        shape: Some round, some elongate, mostly empty 
 distribution: Even distribution                       
                                                                                          
 Some lined with orange clay.
                           ***** STRUCTURE *****                           
 n/a                                                                        
                          ***** ALTERATION *****                           
 Fresh, yellow green clay on outer surface, rare sulfides with clay.        
                        ***** VEINS/FRACTURES *****                        
                                                                                        
 One empty crack.
 
 leg : 106                section:  01        unit/subunit :  0001
 hole: 0649C              top int:   5 cm     observer code:  KUE 
 core:  001D              pieces : 2                             
 
 rock name:  APHYRIC BASALT
 
 contact  :  n/a
 
                         ***** MAIN COMMENTS *****                         
 Glass: glassy margin on one of three pieces, fresh, no contacts.           
 
                          ***** PHENOCRYSTS *****                          
                                                                            
                                                                            
                                                                            
                                                                            
                                                                            
 
 Absent
 
                          ***** GROUNDMASS *****                           
 Glassy to fine grained.                                                    
                             ***** COLOR *****                             
 Gray                                                                       
                           ***** VESICLES *****                            
      percent: 3    
         size: < 1 mm                                  
        shape: Round, some empty                       
 distribution: Even distribution                       
                                                                                          
 Some filled by green clay, even distribution.
                           ***** STRUCTURE *****                           
 n/a                                                                        
                          ***** ALTERATION *****                           
 Fresh, yellow green clay on outer surface, some orange brown.              
                        ***** VEINS/FRACTURES *****                        
                                                                                        
 none
 
 leg : 106                section:  01        unit/subunit :  0001
 hole: 0649C              top int:   9 cm     observer code:  KUE 
 core:  001D              pieces : 3                             
 
 rock name:  APHYRIC BASALT
 
 contact  :  n/a
 
                         ***** MAIN COMMENTS *****                         
 Glass: glassy margin, fresh, no contacts.                                  
 
                          ***** PHENOCRYSTS *****                          
 phenocryst name    %    size            description        
 Plagioclase        n/a  n/a              Single euhedral phenocryst        
                                                                            
                                                                            
                                                                            
                                                                            
 
 
 
                          ***** GROUNDMASS *****                           
 Glassy to very fine grained.                                               
                             ***** COLOR *****                             
 Gray                                                                       
                           ***** VESICLES *****                            
      percent: 3    
         size: < 1 mm                                  
        shape: Round                                   
 distribution: Even distribution                       
                                                                                          
 Some filled by orange brown clay.
                           ***** STRUCTURE *****                           
 n/a                                                                        
                          ***** ALTERATION *****                           
 Fresh, orange brown coating on outer surface.                              
                        ***** VEINS/FRACTURES *****                        
                                                                                        
 One fracture filled with single crystal of pyrite.
 

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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