| Schiff: FS Poseidon | PO 79 / Mecklenburger-Bucht-Vejsnaes Flach / 20.11.1981-26.11.1981 | ||||
| Datum: 21.11.1981 | Wassertiefe: 32.2 m | Typ: Vibrocorer VK 600 | Teufe: 2.5 - 295 cm | Gewinn: 295 cm | |
| Position: | Breite: 54.6977 / Länge: 10.328 | Decca: Rot H 17.57 / Grün I 43.98 / Violett | |||
| Merkmale: | |||||
| Bemerkungen: Sediment sequence: 0-12 cm: dark grey, fine sandy clay with Arctica islandica, Abra alba and Buccinum undatum; 12-27 cm: grey, clayey sand with shell fragments; 27-114 cm: grey, fine to medium grained sand with humus flecks (mottling) and streaks, and subrounded pebbles, forming a 0.5-1 cm layer at 113-114 cm; 114-250 cm (Younger Dryas, PZ IV): greyish brown silt, humus-rich in upper section, less in lower part, with fine grained sand intercalations, brown, medium to coarse grained sand pockets at 160-162 cm, and layers at 220-223 cm and at 230-235 cm; 250-253 cm: brown humus layer; 253-272 cm: yellowish brown, clayey silt with thin humus layers; 272-280 cm: grey, clayey silt, strongly humus, with streaks of fine grained sand; 280-296 cm: grey, clayey silt, with fine grained sand streaks. | |||||
| Literatur: Kyaw Winn, Fritz-Rudolf Averdieck and Friedrich Werner (1982): Spät- und postglaziale Entwicklung des Vejsnaes-Gebietes (Westliche Ostsee).- Meyniana, 34:1-28. Kyaw Winn & Fritz-Rudolf Averdieck, (1984): Post-Boreal development of the Wastern Baltic: Comparison of two local sediment basins,- Meyniana, 36:35-50 cm. | |||||
| Radiographien: Dr. Kyaw Winn | Archiviert: Dr. Kyaw Winn (01.12.2008) | ||||
| von (cm) | bis (cm) | Breite (cm) | Bemerkungen | ||
| 2.5 | 47 | 14 | Top 26 cm of sediment was strongly bioturbated with overprinting of earlier traces, especially through mollusk activity. Large structureless burrows as well as those with parallel layering were observed. Segments of hollow and sediment-filled worm tubes were also preserved. Less bioturbated, with some sediment layering and a few mm-size worm tubes. | ||
| 47 | 102 | 14 | Slightly bioturbated with well preserved sediment layering and some sediment-filled worm burrows at 47-72 cm. A few small dropstones at 48- 80 cm. Stronger bioturbation below 80 cm, with 2-3 mm and ~2 cm-size, sediment-filled, vertical and horizontal burrows. | ||
| 102 | 157 | 14 | Some tears to 209 cm. A few layers were locally bioturbated, e.g. at 206-209 cm, and 216-219 cm.Scattered Ostracoda at 260-270 cm. | ||
| 157 | 212 | 14 | Seldom bioturbated. Long root with bark at 157-184 cm, burrow with irregular sides from 157-186 cm and with linear borders from 184.5-190 cm. | ||
| 212 | 267.5 | 14 | Layering was preserved at 215-225 cm and below 260 cm. Irregular erosional border at 225-232 cm. Faint traces visible at 228-250 cm, with convex upwards structure at 235 cm. | ||
| 267.5 | 295 | 14 | Sediment gave a churned up appearance, except between 268-273 cm. Individual burrows were only faintly preserved. Plant remains. | ||
| Bemerkungen zu den Radiographien: | |||||