SEABED SAMPLING

A total of 27 cores were recovered during the cruise. Some of them were opened and described (Fig.20) and described onboard. One of the SW-104 cores were split every 2cm and sampled. The grabs (Fig.21) were washed and described for shell and coral samples. Table 6 gives sampling information.

Tables 7 and 8 describe the sediment samples collected with the grab SW of the Hersek Delta and 2 core catches in Gemlik. Figure 22 presents the volume magnetic susceptibility data for the analyzed cores.

figure

Figure 20: Example of a gravity core opened on board.

figure

Figure 21: Gulf of Izmit. Grab location on ''mounds''.

Table 6: Cruise MARM05: sampling notes for coring operations.

CORE	TYPE	MOUNT	PENETRATION	REC.	SPEED	NOTES
SA-101	SW104	1x130	105	99	0.8	Extruded
SA-102	COR2	2x600	570	198	1.2	Opened/splitted to ITU-ISMAR
SA-103	SW104	1x130	105	99	0.8	To ITU
PI-104	COR2	1x400	370	210	0.8	To ITU
PI-105	COR2	1x400	360	236	0.6	To ISMAR
PI-106	COR2	1x600	400	225	1.0	To ISMAR
PI-107	COR2	1x600	475	374	1.0	To ITU
PI-108	COR2	1x600	462	372	1.1	To ISMAR
PI-109	COR2	1x600	600	355	1.15	Opened/splitted To ITU-ISMAR
PI-110	COR2	1x600	450	313	1.1	Opened/splitted To ITU-ISMAR
IZ-111	SW104	1x130	135	135	0.5	To ISMAR
IZ-112	SW104	1x130	133	132	0.4	Extruded
IZ-113	SW104	1x130	133	133	0.4	To ITU
IZ-114	COR2	2x600	1060	272	0.7	To ISMAR
IZ-115	COR2	1x600	600	229	0.33	To ITU
IZ-116	COR2	1x600	430	249	0.52	To ITU
IZ-117	COR2	1x600	700	250	0.80	Opened/splitted ToITU-ISMAR
IZ-118	COR2	1x600	550	207	0.34	To ISMAR
IZ-119	COR2	1x600	600	267	0.28	O pened/splitted ITU-ISMAR
IZ-120	COR2	1x600	250	152	1.25	To ISMAR
IZ-121	COR2	1x600	280	170	1.20	To ITU
IZ-122	COR2	1x600	200		1.0	Empty(gravel in catcher)bent at 0.5m
						saved sample outside pipe
GE-123	COR2	1x600	355	231	0.38	To ISMAR
GE-124	COR2	1x600	360	208	0.55	To ITU
GE-125	COR2	1x600	440	233	0.41	To ITU
GE-126	COR2	1x600	435	266	0.36	To ISMAR, P1 5cm polyst. at BOT
SA-127	COR2	1x600	660	363	0.30	To ISMAR
SA-128	COR2	2x600	1089	340	1.06	To ISMAR
						P1 2.5cm polystyrol at BOT (washed)

Table 7: Cruise MARM05: grab description.

GRAB	DESCRIPTION	PALEONTOLOGY
01	Depth: 56.4 m., 65l of mud; the upper part (about 10 cm) is very organic mud (N2), plastic with some clasts and bio-clasts; lower part is less plastic mud (5GY 4/1) with molluscs (Turritella communis), woods, seeds and industrial scoria. A minicore was taken.	-bottom- Cuspidaria rostrata, C.cuspidata, C.abbreviata, T.communis, N.cochlear, Miniacina mineata, serpulids, Nucula gr.hanley (N.sulcata-N.hanley), Timoclea ovata, Corbula gibba, Thyasira flexuosa, Scapharca demiri, Myrtea spinifera, Dentalium sp., Epitonium commune, Xilophaga dorsalis, Cardiomya costellata, Mangelia sp., Capulus ungaricus, Abra longicallus, Acteon tornatilis, Aequipecten spp., Kelliella abyssicola, Alvania spp., Cylichna crossei, Roxania(?) sp. -top- very similar assemblages less abundant species and specimens.
02	Depth: 56.4 m. grab full, the upper 2 cm. are soapy brownish mud; the lower part is bioclastic mud with shell layers of N.cochlear and Chama gryphoides. Shell layers are 3-4 cm. thick, there are interbedded by 5-10 cm of mud. The colour is omogeneous in thickness (5Y 5/2). A minicore was taken.	N.cochlear, C.gryphoides, Cuspidaria rostrata, C.cuspidata, C.abbreviata, Delectopecten vitreus, Saccella commutata, A.longicallus, Mathilda cochlaeformis, M.spinifera, Arca noae, Hiatella artica, Pododesmus sp., C.gibba, Pitar rudis, X.dorsalis, Plagiocardium papillosum, Dentalium spp., T.communis, Heliacus architae, Chlamys sp., Emarginula adriatica, A.tornatilis, C.crossei, Mangelia sp.
03	Depth: 56.5 m; grab is full (similar grab 02) surface is very rich in organic matter, (5GY-5/2) very plastic with layer N.cochlear, living ophiura	N.sulcata, T.comunis, T.flexuosa, A.longicallus, M.spinifera, C.gibba, Pododesmus sp., S.commutata, C.crossei, H artica, H. architae, M.mineata, Calliotropis ottoi, M.cochleaformis, Mathilda retusa, E adriatica, Cariophyllia sp., A.noae, C ungaricus, D. vitreus, Mangelia sp., X.dorsalis, P.papillosum, P.rudis, Venus sp., Dentalium spp., K.abissicula, Alvania spp., S.demiri
04	Depth: 56.1 m; same of GRAB03; grab is full (similar grab 02) surface is very rich in organic matter, (5GY-5/2) very plastic with layer N.cochlear, living ophiura, crabs, octocorals	Cariophylla sp., M.mineata, T.communis, A.longicallus, T.flexuosa, C.gryphoides, N.cochlear, C.gibba, Pododesmus sp., S.commutata, E.adriatica, Dentalium spp., M.cochlaeformis, C.crossei, C.ottoi, M.spinifera, H.architae, N.sulcata, C.cuspidata, C.rostrata, C.costellata, A.tornatilis
05	Depth: 53.9 m; about 60l of mud, upper 10 cm. (10Y 4/2) are incoherent with a lot of bioturbation pocket; the lower part is plastic mud with molluscs like N.cochlear and polychaetes (5GY 5/2). A minicore was taken.	Dentalium spp., C.gibba, C.gryphoides, Pododesmus sp., Rissoa sp., A.longicallus, T.flexuosa, S.demiri, M.spinifera, Nassarius sp., N.sulcata, T.communis, T.ovata, P.papillosum, S.commutata, A.noae, Cariophyllia sp., H.architae, Calliostoma sp., C.ungaricus, A.tornatilis, Chlamys sp., Aequipecten sp., M.miniata, C.rostrata, C.costellata, C.cuspidata, H.artica, C.crossei, Calyptrea chinensis
06	Depth: 60.2 m; grab is full, plastic mud (5G 4/1) reddish on surface (about 1 cm. on surface), with bioturbation pocket with molluscs and living shrimp	Mysella bidentata, T.flexuosa, C.gibba, M.spinifera, C.ungaricus, S.commutata, H.architae, T.communis, N.sulcata, T.ovata, P.rudis, S.demiri, C.rostrata, C.costellata, C.cuspidata, C.chinensis, A.noae, Pteria hirundo, H.artica, Cariophyllia sp., Nassarius spp., Dentalium spp., Epitonium spp., Mangelia spp.
07	Depth: 62.4 m; about 60l of mud (5GY 5/2), the upper part is md with bioclasts, lower part is plastic mud	Alvania sp., T.flexuosa, P.papillosum, Chlamys sp., A.longicallus, R.labiosa, M.spinifera, P.hirundo, N.sulcata, S.commutata, C.gibba, S.demiri, T.communis, C.crossei, Nassaris spp., Epitonium sp., H.architae, C.abbreviata, C.costellata, C.cuspidata

Table 8: Cruise MARM05: core catcher description.

CORE	DESCRIPTION	PALEONTOLOGY
GE-124	core catcher, external tube; Sandy mud and fine sand, greysh, with marine and lagoonal malacofauna, partly reworked	Turricaspia(?) sp., Didacna(?) sp., Monodacna(?) sp., Dreissena rostriformis, P.rudis, N.hanley, C.gibba, T.communis
GE-126	core catcher; Fine sand and sandy mud, reddish, probably lacustrine facies or lagoonal, with caspian and mediterranean malacofauna, both rewoked.	Theodoxius sp., Turricaspia(?) sp., Monodacna(?) sp., Didacna(?) sp., Hydrobia sp., D.rostriformis

figure

Figure 22: Magnetic susceptibility data of the cores. The red lines are the SW-104 corer data. Log10 of susceptibility data were taken for ease of confrontability for the different sampling areas.