Table T4. X-ray diffraction results, carbonate contents, and total and organic carbon contents expressed as CaCO3 and C, respectively (see "Organic and Inorganic Geochemistry") for Hole 1140A.
 
Core, section,
interval (cm)		 Depth (mbsf) Minerals CaCO3
(wt%)		 Carbon (wt%)
Total Organic
Unit I  
     
183-1140A-  
     
1R-1, 12 cm 0.12 opal-A, quartz, sanidine, plagioclase?, clay, maghemite, (calcite) 2 0.23 0.03
1R-1, 90 cm 0.90 calcite, opal-A, (feldspar) 52 6.39 0.08
2R-1, 25 cm 9.75
23    
2R-1, 39 cm 9.89
27 3.73 0.51
2R-1, 90 cm 10.40 calcite, opal-A 73    
3R-1, 90 cm 19.50 calcite 83 10.08 0.07
4R-1, 90 cm 28.80 calcite, opal-A 71 8.53 0.02
5R-CC, 26 cm 37.46 calcite, (opal-A, feldspar) 77    
6R-1, 90 cm 47.40 calcite, (feldspar) 78    
7R-1, 90 cm 56.50 calcite, (opal-A) 72 8.76 0.09
8R-CC, 10 cm 64.70 calcite, (clay) 87 10.5 0
9R-1, 90 cm 74.60 calcite, (alkali feldspar) 75    
10R-1, 90 cm 84.19 calcite, clay, (alkali feldspar) 76 9.18 0.08
11R-CC, 6 cm 92.96 calcite 87    
12R-CC, 2 cm 102.51 calcite, (clay) 91 10.89 0
13R-1, 90 cm 113.09 calcite, (clay, feldspar) 81    
14R-1, 92 cm 122.60 calcite, opal-A, clay, alkali feldspar, (quartz) 51 6.16 0
15R-CC, 20 cm 131.58 calcite, (alkali feldspar, clay)     78
16R-1, 90 cm 141.89 calcite, (opal-A, alkali feldspar, clay) 64    
18R-1, 90 cm 161.19 calcite 90 10.81 0
19R-1, 90 cm 170.80 calcite, (clay) 73    
20R-1, 90 cm 180.39 calcite, (clay) 69    
21R-1, 90 cm 189.99 calcite, opal-A, (clay) 72 8.64 0.02
22R-1, 90 cm 199.60 calcite 88    
23R-1, 90 cm 209.19 calcite 84 10.04 0.01
24R-1, 90 cm 218.90 calcite, (clay, clinoptilolite, glauconite) 73    
25R-1, 90 cm 228.50 calcite, dolomite (<5%), clay, glauconite, (feldspar, chlorite) 68    
25R-5, 37 cm 233.97 calcite, dolomite (<10%), clay, (glauconite, chlorite, feldspar) 74 8.94 0
25R-5, 91 cm   dolomite (>95%), calcite      
32R3, 84 cm   dolomite, clay, (feldspar?)      

Note: Minerals in parentheses indicate the presence of only trace amounts.