Table T2. Results of X-ray diffraction analyses before and after boiling clay in HCl.

Table T2. Results of X-ray diffraction analyses before and after boiling clay in HCl.


				Measured peak area		Scaled peak area*
Core, section, interval (cm)	Treatment	Depth (mbsf)	Facies	Quartz	Chlorite + Kaolinite	Quartz	Chlorite + Kaolinite	Area ratio^†
190-1173A-
72X-1, 126	Untreated	678.00	LSB	970	7945	970	7945	0.12
72X-1, 126	+ HCl			1137	1097	970	936
73X-1, 117	Untreated	687.50	LSB	1379	3531	1379	3531	0.00
73X-1, 117	+ HCl			1195	0	1379	0
190-1177A-
32R-1, 64	Untreated	598.44	LSBt	752	3596	752	3596	0.28
32R-1, 64	+ HCl			1166	1576	752	1016
46R-1, 120	Untreated	733.70	LSBt	1245	2482	1245	2482	0.60
46R-1, 120	+ HCl			1482	1775	1245	1491
55R-1, 120	Untreated	830.00	Volc-rich	1049	2198	1049	2198	0.10
55R-1, 120	+ HCl			720	144	1049	210

Notes: LSB = lower Shikoku Basin, LSBt = lower Shikoku Basin turbidite, volc-rich = volcaniclastic rich. * = Peak area scaled by factors that set quartz (100) before HCl to quartz (100) after HCl. † = Ratio of peak area for scaled treated sample:peak area for untreated sample.