Porosity Development Controlled by Deep-Burial Diagenetic Process in Lacustrine Sandstones Deposited in a Back-Arc Basin (Makó Trough, Pannonian Basin, Hungary)

Table 2

Composition of sandstones in selected samples derived by point counting, based on 300 counts per thin section.

			Detrital grains						Detrital and diagenetic	Diagenetic minerals
FORMATION	Depth (m)	Well	Quartz	K-feldspar	Plagioclase	Calcite lithoclast	Dolomite	Mica	Chlorite	Kaolinite	Calcite cement	Replacive calcite	Ankerite	Albite	Pore	Pyrite
Algyő	3012.0	KV1	55.2	7.6	3.2	4.4	6.8	7.2	1.2	2.4	3.2			1.2	7.6
Algyő	3012.0	KV1	60.0	4.1	2.4	0.8	7.3	7.8	0.4	2.4	4.1			0.8	9.8
Algyő	3020.7	KV2	48.2	3.9		8.0	9.6	9.7		1.0	1.9			5.5	12.2
Algyő	3036.0	KV2	58.2	3.6	2.4	1.2	11.6	6.0		2.8	4.0			2.0	8.4
Algyő	3039.3	KV2	47.4	9.3	4.9	3.6	11.3	8.5		0.8	14.2
Algyő	3051.8	KV2	51.4	4.8		4.8	4.4	12.4		0.0	8.4			8.4	5.6
Szolnok	3035.0	SzK1	35.5	0.4		19.4	10.7	8.3	0.8		19.8		5.0
Szolnok	3035.0	Szk1	44.0	0.4	12.5	2.2	12.1	6.0	0.4	12.9			9.1			0.4
Szolnok	3410.2	M7	54.4	9.2		2.3	5.7	5.4	5.4	6.9	9.2	0.0		1.5
Szolnok	3410.2	M7	36.7	4.2		9.6	14.2	10.0	9.6	9.2	6.3		0.0	0.4
Szolnok	3413.0	M7	48.4	5.0	5.4	2.9	16.8	8.6	7.2	0.7	1.8	0.0	1.1	2.2
Szolnok	3419.2	M7	40.3	3.4	4.7	4.7	15.4	4.9	6.9	2.5	14.8	0.0	2.0	0.5
Szolnok	3421.2	M7	46.2	5.3	6.3	1.3	10.0	5.4	10.0	1.1	12.3	0.0	1.7	0.5
Szolnok	3602.0	Mcs1	49.1	1.3	1.3	3.8	10.3	2.1	3.4		18.4	0.4		9.4		0.4
Szolnok	3602.0	Mcs1	35.3	3.4		2.9	10.9	7.1	0.4		26.9		2.1	10.9
Szolnok	4099.5	M7	31.1	0.0	4.9	8.8	14.1	9.9	7.5	1.8	6.0	5.0	1.1	9.9
Szolnok	4099.5	M7	39.9	5.8	3.4	9.6	10.7	6.5	8.2	0.3	5.8	2.4	1.0	6.2
Szolnok	4103.5	M7	34.1	2.7	1.6	0.0	12.2	9.8	7.1	0.4	16.9	0.0	2.4	12.9
Szolnok	4313.0	M6	52.3	0.8		0.4	5.3	11.1	6.6	0.0	12.3			11.1
Szolnok	4313.0	M6	47.2	3.3		1.1	10.0	10.0	4.6	0.0	14.4			9.5
Szolnok	4313.0	M6	38.0	4.8	4.8	8.3	10.0	12.7	1.7	2.6	7.4			9.6
Endrőd	4060.0	Mcs1	23.7	0.0		9.7	7.6	10.6	4.2		39.4	0.4	0.8	3.4
Endrőd	4060.0	Mcs1	35.3	0.0		5.6	8.4	14.9	8.4		17.7	2.8	0.8	5.6		0.4
Endrőd	4553.0	M6	31.1	0.0		9.2	14.3	5.9	3.4		23.5	1.3	0.4	10.9
Endrőd	4553.0	M6	41.2	0.0		1.4	3.8	16.3	5.4		23.8		0.5	7.5
Endrőd	5471.7	M7	11.0	0.0	2.4	0.0	5.2	18.9	15.5		10.0	19.9	4.5	10.0		2.7
Endrőd	5471.7	M7	7.8	0.0	0.8	4.7	2.7	19.5	18.3		1.9	23.0	3.1	15.2		3.1