Gravel and sand flotation: a sediment dispersal process important in certain nearshore environments
Small rafts of floating sediment, predominantly of granule and small pebble size, were observed along a tidewater coast on James Ross Island, Antarctica. The sediment was lifted from the beach by the advancing tidewater and kept afloat by surface tension. The current transported the rafts at least 1...
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SEPM Society for Sedimentary Geology
1994
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ftulundlup:oai:lup.lub.lu.se:8fa0052f-e21c-4e26-b58c-28381036084b 2023-05-15T13:40:19+02:00 Gravel and sand flotation: a sediment dispersal process important in certain nearshore environments Möller, Per Ingólfsson, Ólafur 1994 https://lup.lub.lu.se/record/8fa0052f-e21c-4e26-b58c-28381036084b eng eng SEPM Society for Sedimentary Geology https://lup.lub.lu.se/record/8fa0052f-e21c-4e26-b58c-28381036084b Journal of Sedimentary Research; 64(4), pp 894-898 (1994) ISSN: 1938-3681 Geology contributiontojournal/article info:eu-repo/semantics/article text 1994 ftulundlup 2023-02-01T23:39:04Z Small rafts of floating sediment, predominantly of granule and small pebble size, were observed along a tidewater coast on James Ross Island, Antarctica. The sediment was lifted from the beach by the advancing tidewater and kept afloat by surface tension. The current transported the rafts at least 100-150 m off the beach, where the rafts broke up due to wind agitation of the sea surface and the gravel sank. This process can transport considerable volumes of sediment from the beach: it is estimated that flotation at the Naze launch ea. 500 kg per kilometer of shoreline per tidal cycle during calm and dry weather conditions, which for one summer season might end up in a total of 0.022 tons of sediment per meter of shoreline. The resulting sediments and sedimentary structures are concluded to be similar to those resulting from iceberg-, sea ice-, and algae rafting, and sediment gravity flows. Floating can be an important way of rafting gravels into fine-grained sublittoral or shallow-marine facies, and should be included when dealing with processes related to sedimentation in the nearshore marine environment. Article in Journal/Newspaper Antarc* Antarctica James Ross Island Ross Island Sea ice Lund University Publications (LUP) Naze ENVELOPE(-57.517,-57.517,-63.917,-63.917) Ross Island The Naze ENVELOPE(-57.533,-57.533,-63.950,-63.950) |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology |
spellingShingle |
Geology Möller, Per Ingólfsson, Ólafur Gravel and sand flotation: a sediment dispersal process important in certain nearshore environments |
topic_facet |
Geology |
description |
Small rafts of floating sediment, predominantly of granule and small pebble size, were observed along a tidewater coast on James Ross Island, Antarctica. The sediment was lifted from the beach by the advancing tidewater and kept afloat by surface tension. The current transported the rafts at least 100-150 m off the beach, where the rafts broke up due to wind agitation of the sea surface and the gravel sank. This process can transport considerable volumes of sediment from the beach: it is estimated that flotation at the Naze launch ea. 500 kg per kilometer of shoreline per tidal cycle during calm and dry weather conditions, which for one summer season might end up in a total of 0.022 tons of sediment per meter of shoreline. The resulting sediments and sedimentary structures are concluded to be similar to those resulting from iceberg-, sea ice-, and algae rafting, and sediment gravity flows. Floating can be an important way of rafting gravels into fine-grained sublittoral or shallow-marine facies, and should be included when dealing with processes related to sedimentation in the nearshore marine environment. |
format |
Article in Journal/Newspaper |
author |
Möller, Per Ingólfsson, Ólafur |
author_facet |
Möller, Per Ingólfsson, Ólafur |
author_sort |
Möller, Per |
title |
Gravel and sand flotation: a sediment dispersal process important in certain nearshore environments |
title_short |
Gravel and sand flotation: a sediment dispersal process important in certain nearshore environments |
title_full |
Gravel and sand flotation: a sediment dispersal process important in certain nearshore environments |
title_fullStr |
Gravel and sand flotation: a sediment dispersal process important in certain nearshore environments |
title_full_unstemmed |
Gravel and sand flotation: a sediment dispersal process important in certain nearshore environments |
title_sort |
gravel and sand flotation: a sediment dispersal process important in certain nearshore environments |
publisher |
SEPM Society for Sedimentary Geology |
publishDate |
1994 |
url |
https://lup.lub.lu.se/record/8fa0052f-e21c-4e26-b58c-28381036084b |
long_lat |
ENVELOPE(-57.517,-57.517,-63.917,-63.917) ENVELOPE(-57.533,-57.533,-63.950,-63.950) |
geographic |
Naze Ross Island The Naze |
geographic_facet |
Naze Ross Island The Naze |
genre |
Antarc* Antarctica James Ross Island Ross Island Sea ice |
genre_facet |
Antarc* Antarctica James Ross Island Ross Island Sea ice |
op_source |
Journal of Sedimentary Research; 64(4), pp 894-898 (1994) ISSN: 1938-3681 |
op_relation |
https://lup.lub.lu.se/record/8fa0052f-e21c-4e26-b58c-28381036084b |
_version_ |
1766132217050824704 |