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NOAA/NGDC
WDC MGG Seafloor Series Vol I

Core Data from the Deep Sea Drilling Project


Leg :  8    Depth Top/Bottom of Layer(m) :   528.28/  529.42
Hole:  71A  Depth to Top of Core(m)      :   528.00
Core:   1   Depth Top/Bottom Interval(mm):  280/1420
Sect:  1
 
Visual Text Description:
 NANNO CHALK;C 5B9/1-BLUISH WHITE,5G6/1-GREENISH GREY;S GREENISH GREY 
"VARVES" AT 47-52CM AND 109-136CM OR FINE LAMINAE;H HARD,WELL INDURATED,
CAN SCRATCH WITH FINGERNAIL;O CONTAINS SOME PARTLY DISSOCIATED SILICIOUS 
FOSSILS AND VOLCANIC GLASS;O FRAGMENTS UP TO 10CM LONG;Z 11121210 
 
 
Leg :  8    Depth Top/Bottom of Layer(m) :   553.00/  554.50
Hole:  71A  Depth to Top of Core(m)      :   553.00
Core:   2   Depth Top/Bottom Interval(mm):   00/1500
Sect:  1
 
Visual Text Description:
 LIMESTONE WITH CHERT INTERGROWTHS;C 5G8/1-LIGHT GREENISH GREY,5Y6/1-LIGHT 
OLIVE GREY,5GY6/1-GREENISH GREY;S GREENISH GREY BELOW 100CM,LIGHT OLIVE 
GREY NON-CALCAREOUS CHERT REPLACEMENT WITH IRREGULAR EMBAYED BOUNDARIES 
AND LIMESTONE "HORSES" AT 50-53CM 68-72CM,CHERT WHISPS 92-100CM AND 
140-148CM,STYLOLITE LIKE FRACTURE WITH APPARENT OFFSET AT 125CM 45DEGREES 
OFF HORIZONTAL,0-100CM HAS FINE IRREGULAR LENTICULAR MOTTLES;H HARD;D 
FRAGMENTS UP TO 30CM LONG;Z 12130000 
 
 
Leg :  8    Depth Top/Bottom of Layer(m) :   554.50/  554.84
Hole:  71A  Depth to Top of Core(m)      :   553.00
Core:   2   Depth Top/Bottom Interval(mm):   00/ 340
Sect:  2
 
Visual Text Description:
 LIMESTONE;C 5G8/1-LIGHT GREENISH GREY,5GY6/1-GREENISH GREY;S 0-15CM HAS 
GREENISH GREY INTERGROWTHS OFCHERT,20-34CM HAS FINE LENTICULAR MOTTLES;D 
FRAGMENTS UP TO 10CM LONG;H HARD;Z 12130000 
 
 
Leg :  8    Depth Top/Bottom of Layer(m) :   555.00/  556.50
Hole:  71A  Depth to Top of Core(m)      :   555.00
Core:   3   Depth Top/Bottom Interval(mm):   00/1500
Sect:  1
 
Visual Text Description:
 LIMESTONE WITH CHERT INTERGROWTHS;C 5G8/1-LIGHT GREENISH GREY,
5GY6/1-GREENISH GREY;S CHERT WHISPS AT 5CM 20CM 61-63CM 88CM 92CM AND 97CM,
THIN GREENISH GREY LENTICULAR MOTTLES POSSIBLY COMPRESSED BURROW MOTTLES,
105-107CM HAS CHERT INTERGROWTH,123-127CM AHS PECULIAR 3MM THICK WHITE 
LAMINAE WITH RIPPLE LIKE MARKINGS POSSIBLY SHEARS WITH ATTENDANT DRAGGING 
OF LAMINAE;H HARD;Z 12130000 
 
 
Leg :  8    Depth Top/Bottom of Layer(m) :   556.50/  557.82
Hole:  71A  Depth to Top of Core(m)      :   555.00
Core:   3   Depth Top/Bottom Interval(mm):   00/1320
Sect:  2
 
Visual Text Description:
 LIMESTONE;C 5GY7/1-GREENISH GREY,5Y8/1,5Y5/1-OLIVE GREY,5YR5/4-MODERATE 
YELLOWISH BROWN,5GY6/1-GREENISH GREY;S 0-54CM IS GREENISH GREY WITH THIN 
LENTICULAR LAMINAE OF LIGHTER AND DARKER COLOR,55-132CM IS 5Y8/1 AND 
GREENISH GREY WITH OLIVE GREY CHERT INTERGROWTHS AT 60CM 62CM 71-76CM AND 
116-120CM,MODERATE YELLLOWISH BROWN INTERGROWTHS OF CHERT AT 71-76CM AND 
116-120CM,WHISPS AND INTERGROWTHS OF OLIVE GREY CHERT AT 110-115CM;D 
FRAGMENTS UP TO 30CM LONG;H HARD;Z 12130000

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These Web pages are from the Core Data from the Deep Sea Drilling Project Legs 1-96 CD-ROM produced 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, 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.