Preface The expedition ARK XIX/3 with the German icebreaking RV ...

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Sedimentary rocks: rounded quartz, rounded feldspar, coarse grained sandstone, middle grained sandstone, fine grained sandstone, siltstone, limestone, flint, chalk, weakly-consolidated bituminous siltstone, black shale, till. Metamorphic rocks: quartz with fragments of shists or mica shists, sand- to clay-rich shist / sericite shist / phyllite, quartzite with observable grain contours, quartzite without observable grains, muscovite mica shist, biotite mica shist, gneiss, serpentinite / meta-gabbro. 2° 3° 4° 5° 6° 79°20' 79°20' SH1 HGIII HGIV 79°10' 79°10' HGII 79° 0' 79° 0' HGV SH2 78°50' 78°50' plutonic 78°40' volcanic sedimentary S3 78°40' metamorphic chalk, flint from the North Sea 2° 3° 4° 5° 6° Fig. C5-1: Distribution of rock types in the uppermost 20 cm of the sediments for locations from which more than 80 gravel grains were counted. - 255 -
The most frequent rock type is sandstone (44 %; Fig. C5-2d), of which fine sandstone (26 %) is more frequent then the middle sandstone (15 %) and the coarse sandstone (3 %). Together with siltstones (19 %, Fig. C5-2a) and quartzites (11 %; Figs C5-2c, C5-2f) siliciclastic sediments and meta-sediments build up 74 % of the ice-rafted material. They probably originate from Svålbard for the major part. Some clasts give more detailed information about their source areas (Fig. C5-2c). Red fine- to middle-grained sandstones (0.9 % of the clasts; Fig. C5-2e) occur in Devonian redbeds on northern Spitsbergen and Eastern Greenland. Weakly consolidated black organic-rich siltstones (1.6 %) occur in Tertiary sediments on West Spitsbergen near Longyearbyen and Ny Ålesund, where they have been mined for brown coals. Black shales (6.9 %) occur in Jurassic deposits on Spitsbergen. In three clasts imprints of Lias ammonites were discovered. Granites and granodiorites (2.5 %; Fig. C5-2f) are frequent in the Scandinavian shield. Gabbros (0.3 %) occur on Franz Josef Land and in Norway. Basalts (0.6 %) originate from Tertiary or Quaternary volcanism in Eastern Greenland (e.g. Geikie Plateau), on Jan Mayen Island and on the Iceland-Faeroe- Shetland Ridge. A single 5 mm large, angular, white, non-floating pumice fragment in PS64/417 GKG (HG-V, 0 - 20 cm depth) has certainly been erupted from an Iceland volcano and was transported with sea ice to the core location. Volcanic clasts are more frequent in the westernmost locations (HG-IV, HG-V; see Fig. C5-1). Chalk (2.4 %; Fig. C5-2b) and flint (0.9 %, Fig. C5-2e) are present in almost all locations (Fig. C5- 1). These are indications for Cretaceous source rocks in the southern North Sea area. The origin of one serpentinite clast (PS64/437, HG-III, 10 - 20 cm) is uncertain, it might originate from submarine outcrops of meta-basalts on the Vesteris Ridge east of the Molloy Hole. Rocks for which an origin on Spitsbergen is certain (Tertiary, Jurassic and Devonian sediments) comprise 2.5 % of the sediments, but many of the siliciclastic sediments will originate from Svålbard as well. Medium- to high-grade metamorphic rocks and plutonites from southern source areas (Eastern Greenland around Scoresby Sund, Iceland, Norway) or from a small metamorphic belt along the western coast of Spitsbergen make up 7.2 % of the IRD. - 256 -
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Preface The expedition ARK XIX/3 wi
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B. 1 Cruise leg ARK XIX/3b: An intr
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The ARK XIX/3 expedition A. 1 Itine
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positioning and navigation of the "
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was followed to obtain video materi
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On Friday morning the 20 th of June
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Fig. A1-2: The working area of the
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"Polarstern" (actual air temperatur
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6000" was still at depth "Polarster
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aseline navigation antennae which a
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Fig. A1-3: Entire cruise track of R
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At end of the leg pressure rising b
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The temperatures during the cruise
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Most frequent wind direction was so
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A. 3.1 High resolution seabed mappi
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On the other hand, the accuracy of
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The sampling campaign was also unde
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Hydrosweep DS2 is installed onboard
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Fig. A4.2-2: Normalized backscatter
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In addition to the micro bathymetry
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ackscatter value of -37.0dB, -38.9d
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athymetry and angular backscatter d
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A. 4.3 Sedimentary and hydrodynamic
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glacial periods. There is also evid
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Fig. A4.3.2-2: Visualisation of dif
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It seems that all the mounds along
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Visible calcareous fauna removed (b
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Fig. A4.3.3-2 Location of SAMS Phot
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Box Core Sample Log Sheet Station N
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A. 4.3.4 Influence of mound topogra
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A. 4.3.5 Photo lander deployment on
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- UMI data logger controlling a tra
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Fig. A4.3.5-3. Close-up view of the
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Lineated features are present NE of
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CARACOLE Cruise Report 30/07/2001 (
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intermediate nepheloid layers (Dick
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Fig. A4.4.1-2. Location of main stu
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A. 4.4.3 Biogeoprocesses along the
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in the database with the exact posi
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The areas with significant benthic
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predators and strong bottom current
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faunal distribution. Palaentologica
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ocks predate the last glaciation, s
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A. 4.4.6 Biological and geological
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Hovland M, Croker PF, Martin M (199
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Live fauna Sediments Live fauna and
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sites can subsequently be transport
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4) The NSOW has similar water mass
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0 100 200 300 400 500 600 700 800 P
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A. 4.8 Deep water coral ecology and
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and video observations made. On ret
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Fig. A4.8.2-2: This orange, planar
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Fig. A4.8.2-4: Feather-shaped alcyo
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Fig. A4.8.2-7: Top left) Yellow alc
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scour or demersal trawling. The gro
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survey at frequencies of 38, 70, 12
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"Belgica mounds" - Porcupine Seabig
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"Twin mounds" - Porcupine Bank 14°
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corals were alive, relatively abund
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Network Setup for Tests The setup f
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are only initial testings and much
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pressure produced as a consequence
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surrounded by elevated sediment fea
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B. 2 Microbathymetry on ROV "Victor
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Pitch correction Due to assembling
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Maps Complete area Håkon Mosby Mud
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B. 3 Geochemistry, geophysics and s
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Heat Flow HMMV 2m # # # # # # # # #
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Lat_dec. Lon_dec Name k T_0m PS64/s
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Temperature / Gravity Corer # GC9 #
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Table B3.2-1: Technical specificati
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Sound velocity: As the cores all co
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Fig. B3.3-1: Display of a 4 km long
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sediment cores varies between 166 t
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Fig. B3.4-1b: Lithological descript
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Fig. B3.4-1d: Lithological descript
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Fig. B3.4-1f: Lithological descript
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hydrotroilite and gas hydrate, this
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As an example, a echo sounder image
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B. 5 Biological investigations at t
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- How much methane is oxidized aero
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profiler). Bottom water samples hav
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the water column was measured using
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1 kg of tubeworms in wet weight. Th
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B. 5.2 Microscale analysis of the s
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Laboratory measurements Central sit
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Page 225 and 226: References Milkov, A., Vogt, P., Ch
Page 227 and 228: ROV "Victor 6000" The ROV "Victor 6
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Page 253 and 254: material via the Transpolar Drift t
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Page 261 and 262: C. 6 Debris on the seafloor at “H
Page 263 and 264: Results A summary of the results is
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Page 283 and 284: - Molecular phylogeny and phylogeog
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Station Date Time PositionLat Posit
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E. Participating institutes / compa
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Acronym Participants iSiTEC GmbH IS
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F. Participants F. 1 Participants A
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F. 2 Participants ARK XIX/3b Armand
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F. 3 Participants ARK XIX/3c Bauerf
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Preface The expedition ARK XIX/3 with the German icebreaking RV ...

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