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Pollen diagrams In Sandomierz Basin

pleszew site, where the relations between man and the natural environment were studied in detail (Wasylikowa et al. 1985). The sediment, 4.30 m thick, cenerally includes peats (Th), gyttja (Ld), gyttja with silt and peat (Ld, Ag, Th) and sand (Ga). Pieces of charcoal (anth.) and broken molluscan shells (part. test. moll.) are visible there. The materiał obtained from the central core segment was analysed every 3—10 cm. Only a few samples were examined from the upper and bottom parts.

In the fossil palaeochannel at Branice (Starkel 1984; Kalicki, Starkel 1987) the profile B 15 was taken from clays and silts (As/Ag), 45 cm thick, and from clays and silts with peats (As/Ag, Th) and sand (As/Ag, Th, Ga) lying between two gravel horizons (Gg) exposed in the gravel pit. The profile was analysed every 5 cm.

The core G 3 bis which was obtained from the oxbow lakę at Grobla (Gębica, Starkel 1987; Starkel et al. 1988) in the northern part of the Niepołomice Forest contained peaty silts (Th, Ag) interbedded with sterile clays (As) and sands (Ga). Pieces of charcoal are visible there. About 1 m of sediments was examined by pollen analysis, one sample every 10 cm.

The profile Dr 10 was collected from the Vistula palaeochannel fills which are exposed in the present bank of the Drwinka river (Gębica, Starkel 1987) situated between the northern and Southern parst of Niepołomice Forest. The sediment, 117 cm thick, is composed of clays and silts (As/Ag), peats (Th), peaty silts (Th, Ag) and gyttja (Ld). It was analysed every 3 — 5 cm.

Two profiles (Pł 17, Pł 40) were taken from the peat bog at Podłęże (Lipka et al. 1975) near the south-western periphery of the Niepołomice Forest at distances of some hundred metres from each other. Bottom sediments consisting of peats (Th), gyttja (Ld), clays and silts (As/Ag), gyttja with silts (Ld,

Table 1. ^l4C dates for the profiles examined

Site	Symbol	N um ber of sample	Depth		Age BP
Pleszów	PI 86-1	Gd-2692	0.48	-0.51	3 260 ±80
		Gd-5143	1.23	-1.28	4 310 ±70
		Gd-4157	3.06	-3.11	11 570±130
		Gd-2693	3.45	— 3.55	12 540 ±150
Branice	B 15	Gd-2087	0.10	-0.30	10 920 ±230
Grobla	G 3 bis	Gd-1787	2.07	-2.12	10 520 ± 110
Drwinka	Dr 10	Gd-3135	0.47	-0.54	7 980 ±70
		Gd-5055	0.71	-0.75	9 520±110
		Gd-1849	0.75	— 0.79	8 760 ±90
Podłężówka	Pł 17	Gd-5147	0.69	-0.73	7 430 ± 80
		Gd-2676	1.88	-1.91	11 850±170
		Gd-2677	2.32	— 2.35	12 650 ± 200
Podłężówka	Pł 40	Gd-2590	3.09	-3.14	11 420± 150
Wielkie	Pel 4	Gd-4236	0.22	-0.27	9 250 ± 170
Błoto		Gd-4243	0.27	-0.30	11 250 ± 250
w Szaro wie		Gd-2 794	0.41	-0.47	10 550 ± 170

Evolution of the Yistuln.