Core Data from the Deep Sea Drilling Project

Leg : 14    Top/Bottom Interval(mm) :   00/  50  Age: LOWER OLIGOCENE
Hole: 144A  Depth Top of Layer(m)   :   20.00    Age: LOWER OLIGOCENE
Core:   1   Depth Bottom of Layer(m):   20.05    Age: 
Sect:  1    Thickness of Layer(m)   :    0.05
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
      0         0        28           /                  
 
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CLAY                                                        
Screen Lith    : CLAY                                                        
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   50/ 120  Age: LOWER OLIGOCENE
Hole: 144A  Depth Top of Layer(m)   :   20.05    Age: LOWER OLIGOCENE
Core:   1   Depth Bottom of Layer(m):   20.12    Age: 
Sect:  1    Thickness of Layer(m)   :    0.07
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     68         2        30       1.31/ 83              4
 
Processing Hist: Classification was successful.
Shipboard Lith : (FORAM) NANNO MARL OOZE                                     
Screen Lith    : CLAY MINERAL RICH NANNOFOSSIL RICH CARBONATE CHALK          
 
 
 
Leg : 14    Top/Bottom Interval(mm) :  120/1500  Age: LOWER OLIGOCENE
Hole: 144A  Depth Top of Layer(m)   :   20.12    Age: LOWER OLIGOCENE
Core:   1   Depth Bottom of Layer(m):   21.50    Age: 
Sect:  1    Thickness of Layer(m)   :    1.38
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     94         3         3       1.37/ 79             80
 
Processing Hist: Classification was successful.
Shipboard Lith : FORAM NANNO CHALK OOZE                                      
Screen Lith    : NANNOFOSSIL RICH CARBONATE CHALK                            
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: LOWER OLIGOCENE
Hole: 144A  Depth Top of Layer(m)   :   21.50    Age: LOWER OLIGOCENE
Core:   1   Depth Bottom of Layer(m):   23.00    Age: 
Sect:  2    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     60         4        36       1.48/ 73            149
 
Processing Hist: Classification was successful.
Shipboard Lith : NANNO FORAM CHALK OOZE                                      
Screen Lith    : CLAY MINERAL RICH NANNOFOSSIL RICH MARLY CARBONATE CHALK    
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: LOWER OLIGOCENE
Hole: 144A  Depth Top of Layer(m)   :   23.00    Age: LOWER OLIGOCENE
Core:   1   Depth Bottom of Layer(m):   24.50    Age: 
Sect:  3    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     68         7        26       1.53/ 70            155
 
Processing Hist: Classification was successful.
Shipboard Lith : FORAM NANNO OOZE                                            
Screen Lith    : CLAY MINERAL RICH NANNOFOSSIL RICH FORAMINIFERA CHALK       
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: LOWER OLIGOCENE
Hole: 144A  Depth Top of Layer(m)   :   24.50    Age: LOWER OLIGOCENE
Core:   1   Depth Bottom of Layer(m):   26.00    Age: 
Sect:  4    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     75         0         0       1.53/ 70            157
 
Processing Hist: 
Shipboard Lith : FORAM OOZE                                                  
Screen Lith    : CHALK.                                                      
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: LOWER OLIGOCENE
Hole: 144A  Depth Top of Layer(m)   :   26.00    Age: LOWER OLIGOCENE
Core:   1   Depth Bottom of Layer(m):   27.50    Age: 
Sect:  5    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     72         5        23       1.58/ 67            152
 
Processing Hist: Classification was successful.
Shipboard Lith : FORAM CHALK OOZE                                            
Screen Lith    : CLAY MINERAL RICH NANNOFOSSIL RICH CARBONATE CHALK          
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: LOWER OLIGOCENE
Hole: 144A  Depth Top of Layer(m)   :   38.25    Age: LOWER OLIGOCENE
Core:   2   Depth Bottom of Layer(m):   39.75    Age: 
Sect:  1    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
      0         0         0       1.49/ 73            155
 
Processing Hist: 
Shipboard Lith : ****** NO LITH GIVEN ***                                    
Screen Lith    : CLAY MINERAL RICH NANNOFOSSIL RICH CARBONATE CHALK          
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: LOWER OLIGOCENE
Hole: 144A  Depth Top of Layer(m)   :   39.75    Age: LOWER OLIGOCENE
Core:   2   Depth Bottom of Layer(m):   41.25    Age: 
Sect:  2    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
      0         0         0       1.40/ 78            142
 
Processing Hist: 
Shipboard Lith : ****** NO LITH GIVEN ***                                    
Screen Lith    : CLAY MINERAL RICH NANNOFOSSIL RICH CARBONATE CHALK          
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: LOWER OLIGOCENE
Hole: 144A  Depth Top of Layer(m)   :   41.25    Age: LOWER OLIGOCENE
Core:   2   Depth Bottom of Layer(m):   42.75    Age: 
Sect:  3    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
      0         0         0       1.36/ 80            157
 
Processing Hist: 
Shipboard Lith : ****** NO LITH GIVEN ***                                    
Screen Lith    : CLAY MINERAL RICH NANNOFOSSIL RICH CARBONATE CHALK          
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: LOWER OLIGOCENE
Hole: 144A  Depth Top of Layer(m)   :   42.75    Age: LOWER OLIGOCENE
Core:   2   Depth Bottom of Layer(m):   44.25    Age: 
Sect:  4    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     68         5        27       1.56/ 68            157
 
Processing Hist: Classification was successful.
Shipboard Lith : NANNO FORAM CHALK OOZE                                      
Screen Lith    : CLAY MINERAL RICH NANNOFOSSIL RICH CARBONATE CHALK          
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: LOWER OLIGOCENE
Hole: 144A  Depth Top of Layer(m)   :   44.25    Age: LOWER OLIGOCENE
Core:   2   Depth Bottom of Layer(m):   45.75    Age: 
Sect:  5    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     65         6        29       1.56/ 68            159
 
Processing Hist: Classification was successful.
Shipboard Lith : NANNO FORAM CHALK OOZE                                      
Screen Lith    : CLAY MINERAL RICH NANNOFOSSIL RICH CARBONATE CHALK          
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: LOWER OLIGOCENE
Hole: 144A  Depth Top of Layer(m)   :   45.75    Age: LOWER OLIGOCENE
Core:   2   Depth Bottom of Layer(m):   47.25    Age: 
Sect:  6    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
    107         4         0       1.57/ 67            153
 
Processing Hist: Classification was successful.
Shipboard Lith : FORAM NANNO OOZE                                            
Screen Lith    : FORAMINIFERA RICH CARBONATE RICH  CHALK                     
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: UPPER PALEOCENE
Hole: 144A  Depth Top of Layer(m)   :  140.16    Age: UPPER PALEOCENE
Core:   3   Depth Bottom of Layer(m):  141.66    Age: 
Sect:  1    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     36         2        62       1.73/ 58            149
 
Processing Hist: Classification was successful.
Shipboard Lith : FORAM NANNO CHALK OOZE                                      
Screen Lith    : NANNOFOSSIL RICH MARLY CARBONATE CHALK                      
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: UPPER PALEOCENE
Hole: 144A  Depth Top of Layer(m)   :  141.66    Age: UPPER PALEOCENE
Core:   3   Depth Bottom of Layer(m):  143.16    Age: 
Sect:  2    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     39         0         0       1.81/ 53            155
 
Processing Hist: 
Shipboard Lith : ZEOLITIC FORAM NANNO MARL MUD                               
Screen Lith    : CALCAREOUS SEDIMENT.                                        
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/ 430  Age: UPPER PALEOCENE
Hole: 144A  Depth Top of Layer(m)   :  143.16    Age: UPPER PALEOCENE
Core:   3   Depth Bottom of Layer(m):  143.59    Age: 
Sect:  3    Thickness of Layer(m)   :    0.43
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     62         0        38       1.55/ 68             44
 
Processing Hist: Classification was successful.
Shipboard Lith : FORAM NANNO MARL MUD                                        
Screen Lith    : CLAY MINERAL RICH NANNOFOSSIL RICH CARBONATE CHALK          
 
 
 
Leg : 14    Top/Bottom Interval(mm) :  430/ 850  Age: UPPER PALEOCENE
Hole: 144A  Depth Top of Layer(m)   :  143.59    Age: UPPER PALEOCENE
Core:   3   Depth Bottom of Layer(m):  144.01    Age: 
Sect:  3    Thickness of Layer(m)   :    0.42
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     90         0        10       1.69/ 60             45
 
Processing Hist: Classification was successful.
Shipboard Lith : CHLORITIC CALCISILTITE                                      
Screen Lith    : CARBONATE CHALK                                             
 
 
 
Leg : 14    Top/Bottom Interval(mm) :  850/1500  Age: UPPER PALEOCENE
Hole: 144A  Depth Top of Layer(m)   :  144.01    Age: UPPER PALEOCENE
Core:   3   Depth Bottom of Layer(m):  144.66    Age: 
Sect:  3    Thickness of Layer(m)   :    0.65
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     71         0        29       1.82/ 53             69
 
Processing Hist: Classification was successful.
Shipboard Lith : FORAM CARBONATE SILT                                        
Screen Lith    : ISOTROPIC MINERAL RICH FORAMINIFERA RICH CARBONATE CHALK    
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: UPPER PALEOCENE
Hole: 144A  Depth Top of Layer(m)   :  144.66    Age: UPPER PALEOCENE
Core:   3   Depth Bottom of Layer(m):  146.16    Age: 
Sect:  4    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     52         1        47       1.83/ 52            156
 
Processing Hist: Classification was successful.
Shipboard Lith : ZEOLITIC (FORAM)NANNO MARL CHALK OOZE                       
Screen Lith    : NANNOFOSSIL RICH MARLY CARBONATE LIMESTONE                  
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: UPPER PALEOCENE
Hole: 144A  Depth Top of Layer(m)   :  146.16    Age: UPPER PALEOCENE
Core:   3   Depth Bottom of Layer(m):  147.66    Age: 
Sect:  5    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     91         0         9       1.79/ 54            157
 
Processing Hist: Classification was successful.
Shipboard Lith : ZEOLITIC NANNO FORAM MARL                                   
Screen Lith    : ZEOLITE RICH NANNOFOSSIL RICH CARBONATE RICH  CHALK         
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: MAESTRICHTIAN
Hole: 144A  Depth Top of Layer(m)   :  147.66    Age: MAESTRICHTIAN
Core:   3   Depth Bottom of Layer(m):  149.16    Age: 
Sect:  6    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     64         4        33       1.71/ 59            158
 
Processing Hist: Classification was successful.
Shipboard Lith : ZEOLITE NANNO FORAM MARL                                    
Screen Lith    : ZEOLITE RICH NANNOFOSSIL RICH CARBONATE RICH  CHALK         
 
 
 
Leg : 14    Top/Bottom Interval(mm) :  900/1000  Age: UPPER SENONIAN
Hole: 144A  Depth Top of Layer(m)   :  171.90    Age: MAESTRICHTIAN
Core:   4   Depth Bottom of Layer(m):  172.00    Age: CAMPANIAN
Sect:  1    Thickness of Layer(m)   :    0.10
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     40        25        33           /                  
 
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : NANNO MARL MUD                                              
Screen Lith    : MARLY NANNOFOSSIL OOZE                                      
 
 
 
Leg : 14    Top/Bottom Interval(mm) : 1000/1100  Age: UPPER SENONIAN
Hole: 144A  Depth Top of Layer(m)   :  172.00    Age: MAESTRICHTIAN
Core:   4   Depth Bottom of Layer(m):  172.10    Age: CAMPANIAN
Sect:  1    Thickness of Layer(m)   :    0.10
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     12        30        58       1.45/ 75              6
 
Processing Hist: Classification was successful.
Shipboard Lith : SILICIFIED MUDSTONE                                         
Screen Lith    : QUARTZ RICH CLAY MINERAL RICH MUDSTONE                      
 
 
 
Leg : 14    Top/Bottom Interval(mm) : 1100/1500  Age: UPPER SENONIAN
Hole: 144A  Depth Top of Layer(m)   :  172.10    Age: MAESTRICHTIAN
Core:   4   Depth Bottom of Layer(m):  172.50    Age: CAMPANIAN
Sect:  1    Thickness of Layer(m)   :    0.40
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     38         2        60       1.39/ 78             21
 
Processing Hist: Classification was successful.
Shipboard Lith : ZEOLITIC NANNO MARL MUD                                     
Screen Lith    : CLAY MINERAL RICH MARLY NANNOFOSSIL LIMESTONE               
 
 
 
Leg : 14    Top/Bottom Interval(mm) :   00/1500  Age: UPPER SENONIAN
Hole: 144A  Depth Top of Layer(m)   :  172.50    Age: MAESTRICHTIAN
Core:   4   Depth Bottom of Layer(m):  174.00    Age: CAMPANIAN
Sect:  2    Thickness of Layer(m)   :    1.50
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     30         1        69       1.63/ 64            151
 
Processing Hist: 
Shipboard Lith : FORAM NANNO MARL MUD                                        
Screen Lith    : MARLYCALCAREOUS OOZE.                                       
 
 
 
Leg : 14    Top/Bottom Interval(mm) : 1050/1060  Age: LOWER SENONIAN
Hole: 144A  Depth Top of Layer(m)   :  181.05    Age: SANTONIAN
Core:   5   Depth Bottom of Layer(m):  181.06    Age: CONIACIAN
Sect:  1    Thickness of Layer(m)   :    0.01
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
      0         0         0           /                  
 
Processing Hist: 
Shipboard Lith : CALCAREOUS ORGANIC ZEOLITIC SHALE                           
Screen Lith    : MARLYCALCAREOUS OOZE.                                       
 
 
 
Leg : 14    Top/Bottom Interval(mm) : 1060/1260  Age: LOWER SENONIAN
Hole: 144A  Depth Top of Layer(m)   :  181.06    Age: SANTONIAN
Core:   5   Depth Bottom of Layer(m):  181.26    Age: CONIACIAN
Sect:  1    Thickness of Layer(m)   :    0.20
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
      0         0         0           /                  
 
Processing Hist: 
Shipboard Lith : CLAYEY LIMESTONE                                            
Screen Lith    : MARLYCALCAREOUS OOZE.                                       
 
 
 
Leg : 14    Top/Bottom Interval(mm) : 1260/1500  Age: LOWER SENONIAN
Hole: 144A  Depth Top of Layer(m)   :  181.26    Age: SANTONIAN
Core:   5   Depth Bottom of Layer(m):  181.50    Age: CONIACIAN
Sect:  1    Thickness of Layer(m)   :    0.24
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
      0         0         0           /                  
 
Processing Hist: 
Shipboard Lith : CALCAREOUS ORGANIC ZEOLITIC SHALE                           
Screen Lith    : MARLYCALCAREOUS OOZE.                                       
 
 
 
Leg : 14    Top/Bottom Interval(mm) :  750/ 950  Age: CONIACIAN
Hole: 144A  Depth Top of Layer(m)   :  189.75    Age: CONIACIAN
Core:   6   Depth Bottom of Layer(m):  189.95    Age: 
Sect:  1    Thickness of Layer(m)   :    0.20
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
      0         0         0       1.15/ 93              5
 
Processing Hist: 
Shipboard Lith : CALCAREOUS ZEOLITIC ORGANIC SHALE                           
Screen Lith    : MARLYCALCAREOUS OOZE.                                       
 
 
 
Leg : 14    Top/Bottom Interval(mm) :  950/ 970  Age: CONIACIAN
Hole: 144A  Depth Top of Layer(m)   :  189.95    Age: CONIACIAN
Core:   6   Depth Bottom of Layer(m):  189.97    Age: 
Sect:  1    Thickness of Layer(m)   :    0.02
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
      0         0         0           /                  
 
Processing Hist: 
Shipboard Lith : CLAYEY LIMESTONE                                            
Screen Lith    : MARLYCALCAREOUS OOZE.                                       
 
 
 
Leg : 14    Top/Bottom Interval(mm) :  970/1450  Age: CONIACIAN
Hole: 144A  Depth Top of Layer(m)   :  189.97    Age: CONIACIAN
Core:   6   Depth Bottom of Layer(m):  190.45    Age: 
Sect:  1    Thickness of Layer(m)   :    0.48
 
       Average Percent          G.R.A.P.E. Avg   # G.R.A.P.E.
Calcareous Siliceous Detrital  Density/Porosity   meas Avg'd
========== ========= ========  ================  ============
     50         2        48       1.44/ 75             48
 
Processing Hist: Classification was successful.
Shipboard Lith : CALCAREOUS ZEOLITIC ORGANIC SHALE                           
Screen Lith    : CLAY MINERAL RICH CARBONATE RICH MARLY CHALK
Introduction
Cite as: Deep Sea Drilling Project (1989): Archive of Core and Site/Hole Data and Photographs from the Deep Sea Drilling Project (DSDP). National Geophysical Data Center, NOAA. doi:10.7289/V54M92G2 [access date]
These Web pages are from the Core Data from the Deep Sea Drilling Project Legs 1-96 CD-ROM produced in 1989 and modified in 2000 by the U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, National Geophysical Data Center (now part of the National Centers for Environmental Information), and collocated World Data Center for Marine Geology and Geophysics, Boulder (now part of the World Data Service for Geophysics). Data were compiled in cooperation with the U.S. Science Support Program, of the Joint Oceanographic Institutions, Inc. (now the Consortium for Ocean Leadership), and the U.S. National Science Foundation.
Please see NOAA's privacy and disclaimer information. Send questions or comments to mgg.info@noaa.gov.

Department of Commerce > NOAA > NESDIS > NCEI > doi:10.7289/V54M92G2