Pore Changes in Purple Mudstone Based on the Analysis of Dry-Wet Cycles Using Nuclear Magnetic Resonance

Table 2

EDS major element ratio analysis results.

Rock samples	Element type and content (%)
	C	O	Na	Mg	Al	Si	S	K	Ca	Fe
Purple mudstone sample no. 1	21.04	43.00	1.83	0.82	6.48	18.23	0.07	1.98	4.70	1.86
Purple mudstone sample no. 2	14.64	52.02	0.61	1.47	5.71	18.18	0.07	1.41	4.06	1.82
Purple mudstone sample no. 3	15.36	53.72	0.76	1.20	5.04	18.45	0.05	1.21	2.61	1.60