Table T4.

Table T4. X-ray diffraction results and carbonate contents expressed as CaCO₃ for Hole 1137A.

Core, section, interval (cm)	Depth (mbsf)	Minerals	CaCO₃(wt%)
Unit I
183-1137A-
1R-1, 89	0.89	Opal-A, opal-CT, calcite, ?orthoclase, (quartz)	51
Unit II
183-1137A-
2R-1, 59	10.09	Calcite	88
3R-1, 89	19.49	Calcite	92
4R-1, 89	28.49	Calcite	95
5R-1, 89	37.69	Calcite	91
6R-1, 89	46.89	Calcite	89
7R-1, 89	56.09	Calcite	92
8R-1, 89	65.69	Calcite	95
9R-1, 89	75.39	Calcite	94
11R-1, 89	94.59	Calcite	95
12R-1, 91	104.21	Calcite	95
13R-1, 89	113.79	Calcite	92
14R-1, 89	123.49	Calcite	95
15R-1, 89	133.09	Calcite	95
16R-1, 89	142.69	Calcite	95
17R-1, 89	152.29	Calcite	95
18R-1, 88	161.88	Calcite	94
19R-1, 89	171.59	Calcite	96
21R-1, 87	190.77	Calcite	93
Unit III
183-1137A-
22R-1, 6	199.56	—	77
23R-2, 10	210.68	—	76
24R-1, 40	219.20	Quartz, glass/opal-A, opal-CT, glauconite, calcite, hematite, marcasite, pyrite	3