The Role of Microfabric and Laminae on Pore Structure and Gas Transport Pathways of Marine Shales from Sichuan Basin, China

Table 1

Lithofacies, TOC, and mineralogy compositions of the Longmaxi shale samples. TOC and mineral content are presented in weight percent (wt %).

Sample	Depth (m)	Lithofacies	TOC	Quartz	Total feldspar	Carbonates	Pyrite	Total clays	I/S	Illite	Chlorite
JYA-1	2527.8	CM	0.5	33.3	8.6	0.0	1.8	56.3	19.7	11.3	25.3
JYA-2	2531.1	CM	0.3	31.1	6.2	0.0	0.0	62.7	18.8	17.6	26.3
JYA-3	2537.1	CM	0.6	30.5	7.0	2.2	1.5	58.8	21.2	16.5	21.2
JYA-4	2540.5	CM	1.0	32.2	8.1	2.2	1.9	55.6	20.0	16.7	18.9
JYA-5	2543.1	CM	1.4	34.7	4.2	5.0	3.3	52.8	15.8	15.8	21.1
JYA-6	2549.2	M	2.3	32.3	6.0	10.9	3.9	46.9	19.2	10.8	16.9
JYA-7	2551.2	CM	1.5	33.1	3.7	3.7	1.7	57.8	16.8	17.9	23.1
JYA-8	2553.1	CM	1.7	35.3	5.7	2.3	1.5	55.2	17.7	16.6	21.0
JYA-9	2563.1	M	1.4	37.4	8.2	10.0	3.0	41.4	17.4	14.9	9.1
JYA-10	2563.4	M	2.0	38.1	7.6	9.1	4.0	41.2	14.4	14.4	12.4
JYA-11	2569.3	M	1.4	35.9	9.7	11.7	1.9	40.8	16.7	11.4	12.6
JYA-12	2579.4	M	2.3	37.2	6.2	5.9	2.2	48.5	17.5	15.5	15.5
JYA-13	2582.0	S	2.5	38.4	9.3	11.9	5.5	34.9	12.2	16.1	6.6
JYA-14	2585.4	S	3.1	40.6	7.6	9.8	5.1	36.9	19.2	11.4	6.3
JYA-15	2587.2	S	3.0	44.7	7.2	6.8	4.1	37.2	18.2	14.1	4.8
JYA-16	2593.0	M	1.4	30.6	7.5	36.6	3.4	21.9	10.7	7.0	4.2
JYA-17	2594.0	S	2.6	41.3	7.0	13.9	4.0	33.8	15.6	11.8	6.4
JYA-18	2597.3	S	3.0	47.1	7.2	12.6	6.6	26.5	13.0	10.3	3.2
JYA-19	2600.1	S	3.0	45.2	7.9	14.5	4.0	28.4	13.6	11.1	3.7
JYA-20	2603.3	S	3.0	38.5	12.9	19.4	4.9	24.3	10.5	11.2	2.7
JYA-21	2606.2	S	4.0	53.2	10.5	7.3	3.8	25.2	13.6	8.8	2.8
JYA-22	2612.2	S	4.4	49.3	8.10	6.3	4.3	32.0	16.3	14.1	1.6
JYA-23	2615.3	S	5.3	58.4	3.50	8.1	5.5	24.5	13.2	8.3	2.9