Hydrodynamic properties and grain-size characteristics of volcaniclastics deposits on the Mid-Atlantic Ridge north of Iceland (Kolbeinsey Ridge)
Surface sediments from a transect across the mid-ocean ridge north of Iceland (Kolbeinsey Ridge) have been analyzed according to their compositional, textural and hydromechanical characteristics. The results were used to reconstruct sediment formation and depositional processes. The ridge sediments...
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Society for Sedimentary Geology
1993
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Online Access: | https://oceanrep.geomar.de/id/eprint/29022/ https://oceanrep.geomar.de/id/eprint/29022/1/Oehmig.pdf http://jsedres.geoscienceworld.org/content/63/1/140.abstract https://doi.org/10.1306/D4267AAF-2B26-11D7-8648000102C1865D |
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ftoceanrep:oai:oceanrep.geomar.de:29022 2023-05-15T16:47:49+02:00 Hydrodynamic properties and grain-size characteristics of volcaniclastics deposits on the Mid-Atlantic Ridge north of Iceland (Kolbeinsey Ridge) Oehmig, Reinhard Wallrabe-Adams, Hans-Joachim 1993 text https://oceanrep.geomar.de/id/eprint/29022/ https://oceanrep.geomar.de/id/eprint/29022/1/Oehmig.pdf http://jsedres.geoscienceworld.org/content/63/1/140.abstract https://doi.org/10.1306/D4267AAF-2B26-11D7-8648000102C1865D en eng Society for Sedimentary Geology https://oceanrep.geomar.de/id/eprint/29022/1/Oehmig.pdf Oehmig, R. and Wallrabe-Adams, H. J. (1993) Hydrodynamic properties and grain-size characteristics of volcaniclastics deposits on the Mid-Atlantic Ridge north of Iceland (Kolbeinsey Ridge). Journal of Sedimentary Petrology, 63 (1). pp. 140-151. DOI 10.1306/D4267AAF-2B26-11D7-8648000102C1865D <https://doi.org/10.1306/D4267AAF-2B26-11D7-8648000102C1865D>. doi:10.1306/D4267AAF-2B26-11D7-8648000102C1865D info:eu-repo/semantics/restrictedAccess Article PeerReviewed 1993 ftoceanrep https://doi.org/10.1306/D4267AAF-2B26-11D7-8648000102C1865D 2023-04-07T15:19:46Z Surface sediments from a transect across the mid-ocean ridge north of Iceland (Kolbeinsey Ridge) have been analyzed according to their compositional, textural and hydromechanical characteristics. The results were used to reconstruct sediment formation and depositional processes. The ridge sediments are dominated by volcaniclastic particles of hyaloclastic and pyroclastic origin. These particles show a wide variety in size, shape and density. Single-grain settling velocities of the different glass types reveal the suitability of this parameter as a reflector of the particle properties of size, shape and density, which are also known to be relevant to grain transport. Observations concerning different current expositions of central ridge sediments, combined with the parameters of settling velocity distribution, grain-size distribution and sediment particle composition, were applied to distinguish between transport association with rare, easily movable glass shards and poorly sorted sediments in sheltered ponds. A bimodal settling velocity distribution of steep ridge-flank sediments probably indicates the effect of sediment admixture from poorly sorted mass flows. Alternating coarse- and fine-grained layers characterize the transition between ridge-glass sands and the ridge-adjacent plain, which is dominated by slow-settling pelagic material. Article in Journal/Newspaper Iceland Kolbeinsey OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Kolbeinsey ENVELOPE(-18.687,-18.687,67.149,67.149) Kolbeinsey Ridge ENVELOPE(-16.917,-16.917,68.833,68.833) Mid-Atlantic Ridge Journal of Sedimentary Research 63 1 140 151 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Surface sediments from a transect across the mid-ocean ridge north of Iceland (Kolbeinsey Ridge) have been analyzed according to their compositional, textural and hydromechanical characteristics. The results were used to reconstruct sediment formation and depositional processes. The ridge sediments are dominated by volcaniclastic particles of hyaloclastic and pyroclastic origin. These particles show a wide variety in size, shape and density. Single-grain settling velocities of the different glass types reveal the suitability of this parameter as a reflector of the particle properties of size, shape and density, which are also known to be relevant to grain transport. Observations concerning different current expositions of central ridge sediments, combined with the parameters of settling velocity distribution, grain-size distribution and sediment particle composition, were applied to distinguish between transport association with rare, easily movable glass shards and poorly sorted sediments in sheltered ponds. A bimodal settling velocity distribution of steep ridge-flank sediments probably indicates the effect of sediment admixture from poorly sorted mass flows. Alternating coarse- and fine-grained layers characterize the transition between ridge-glass sands and the ridge-adjacent plain, which is dominated by slow-settling pelagic material. |
format |
Article in Journal/Newspaper |
author |
Oehmig, Reinhard Wallrabe-Adams, Hans-Joachim |
spellingShingle |
Oehmig, Reinhard Wallrabe-Adams, Hans-Joachim Hydrodynamic properties and grain-size characteristics of volcaniclastics deposits on the Mid-Atlantic Ridge north of Iceland (Kolbeinsey Ridge) |
author_facet |
Oehmig, Reinhard Wallrabe-Adams, Hans-Joachim |
author_sort |
Oehmig, Reinhard |
title |
Hydrodynamic properties and grain-size characteristics of volcaniclastics deposits on the Mid-Atlantic Ridge north of Iceland (Kolbeinsey Ridge) |
title_short |
Hydrodynamic properties and grain-size characteristics of volcaniclastics deposits on the Mid-Atlantic Ridge north of Iceland (Kolbeinsey Ridge) |
title_full |
Hydrodynamic properties and grain-size characteristics of volcaniclastics deposits on the Mid-Atlantic Ridge north of Iceland (Kolbeinsey Ridge) |
title_fullStr |
Hydrodynamic properties and grain-size characteristics of volcaniclastics deposits on the Mid-Atlantic Ridge north of Iceland (Kolbeinsey Ridge) |
title_full_unstemmed |
Hydrodynamic properties and grain-size characteristics of volcaniclastics deposits on the Mid-Atlantic Ridge north of Iceland (Kolbeinsey Ridge) |
title_sort |
hydrodynamic properties and grain-size characteristics of volcaniclastics deposits on the mid-atlantic ridge north of iceland (kolbeinsey ridge) |
publisher |
Society for Sedimentary Geology |
publishDate |
1993 |
url |
https://oceanrep.geomar.de/id/eprint/29022/ https://oceanrep.geomar.de/id/eprint/29022/1/Oehmig.pdf http://jsedres.geoscienceworld.org/content/63/1/140.abstract https://doi.org/10.1306/D4267AAF-2B26-11D7-8648000102C1865D |
long_lat |
ENVELOPE(-18.687,-18.687,67.149,67.149) ENVELOPE(-16.917,-16.917,68.833,68.833) |
geographic |
Kolbeinsey Kolbeinsey Ridge Mid-Atlantic Ridge |
geographic_facet |
Kolbeinsey Kolbeinsey Ridge Mid-Atlantic Ridge |
genre |
Iceland Kolbeinsey |
genre_facet |
Iceland Kolbeinsey |
op_relation |
https://oceanrep.geomar.de/id/eprint/29022/1/Oehmig.pdf Oehmig, R. and Wallrabe-Adams, H. J. (1993) Hydrodynamic properties and grain-size characteristics of volcaniclastics deposits on the Mid-Atlantic Ridge north of Iceland (Kolbeinsey Ridge). Journal of Sedimentary Petrology, 63 (1). pp. 140-151. DOI 10.1306/D4267AAF-2B26-11D7-8648000102C1865D <https://doi.org/10.1306/D4267AAF-2B26-11D7-8648000102C1865D>. doi:10.1306/D4267AAF-2B26-11D7-8648000102C1865D |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1306/D4267AAF-2B26-11D7-8648000102C1865D |
container_title |
Journal of Sedimentary Research |
container_volume |
63 |
container_issue |
1 |
container_start_page |
140 |
op_container_end_page |
151 |
_version_ |
1766037923832004608 |