Home Geologische Onderzoeken Stratigraphy Mesofossil content and Bryozoa

6.1 Fossil content, general
6.2 Fossil content, Bryozoa
 

To compare the mesofossil contents in general and the Bryozoa content in particular, samples were taken in the Curfs and ENCI quarries in the Meerssen chalk (see 2 Methods). In the Curfs quarry the samples were taken from the Caster horizon and from the bioclast grit layer above the Berg en Terblijt hardground. In the ENCI quarry, a sample was taken from stage E in section E3 (see Fig. 4 in 5.4 ENCI Quarry). In the three locations significant samples were taken; 8000, 2000, and 3000 mesofossils were sorted. In the B+T sample from the Curfs quarry, a large percentage of Bryozoa could not be identified due to encrusting by algae.
 

6.1 Fossil content, general
 

Fossil type	Number Curfs Caster	Number Curfs B+T	Number ENCI		Percentage Curfs Caster	Percentage Curfs B+T	Percentage ENCI
Bryozoa (sorted)	1910	453	287		23,6	21.6	9,5
Orbitoides sp. (large Foraminifer)	4065	432	2416		50,2	20,6	79,6
Siderolites calcitrapoides	719	21	265		8,9	1,0	8,7
Echinoid parts	99	452	7		1,2	21,5	0,2
Malacostraca parts	35	7	2		0,4	0,3	0,1
Brachiopod (species 30)	360	203	7		4,4	9,7	0,2
Brachiopod (species 31)	73	6	4		0,9	0,3	0,1
Brachiopod (species 60)	-	185	-		-	8,8	-
Belemnite fragm.	-	21	-		-	1,0	-
Unsorted fragments (mostly Bryozoa)	835	320	48		10,3	15,2	1,6
Total	8096	2101	3036

6.2 Fossil content, Bryozoa
 

Fossil type	Number Curfs Caster	Number Curfs B+T	Number ENCI		Percentage Curfs Caster	Percentage Curfs B+T	Percentage ENCI
Species 1	491	14	39		25,7	3,1	13,5
Species 2	14	-	4		0,7	-	1,4
Species 3	212	12	17		11,1	2,6	5,9
Species 4	57	4	12		3,0	0,9	4,2
Species 5	10	-	4		0,5	-	1,4
Species 6	11	-	2		0,6	-	0,7
Species 7	1	1	1		0,1	0,2	0,3
Species 8	5	1	2		0,3	0,2	0,7
Species 9	2	-	-		0,1	-	-
Species 10	15	5	8		0,8	1,1	2,8
Species 11	2	-	2		0,1	-	0,7
Species 12	29	-	2		1,5	-	0,7
Species 13	329	41	47		17,2	9,1	16,4
Species 14	105	22	11		5,5	4,9	3,8
Species 15	1	-	1		0,1	-	0,3
Species 16	3	2	-		0,2	0,4	-
Species 17	20	3	6		1,0	0,7	2,1
Species 18	5	-	-		0,3	-	-
Species 19	3	-	1		0,2	-	0,3
Species 20	7	-	1		0,4	-	0,3
Species 21	25	-	3		1,3	-	1,0
Species 22	10	4	-		0,5	0,9	-
Species 23	9	-	-		0,5	-	-
Species 24	3	-	1		0,2	-	0,3
Species 25	40	-	-		2,1	-	-
Species 26	372	331	68		19,2	73,1	23,7
Species 27	75	-	-		3,9	-	-
Species 28	17	10	5		0,9	2,2	1,7
Species 29	37	-	45		1,9	-	15,7
Species 37	-	-	3		-	-	1,0
Species 38	-	-	1		-	-	0,3
Species 39	-	-	1		-	-	0,3
Species 61	-	1	-		-	0,2	-
Species 62	-	1	-		-	0,2	-
Species 63	-	1	-		-	0,2	-
Total	1910	453	287

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