Entrainment of planktonic foraminifera: effect of bulk density
ABSTRACT Depositional hydrodynamics have been studied using settling rate distributions of Norwegian deep sea sediments (between Jan Mayen Island and the Vøring Plateau), together with Shields’ critical shear stress velocities. Planktonic foraminifera are the dominant sand sized component of these s...
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crwiley:10.1111/j.1365-3091.1993.tb01366.x 2024-06-02T08:09:39+00:00 Entrainment of planktonic foraminifera: effect of bulk density OEHMIG, REINHARD 1993 http://dx.doi.org/10.1111/j.1365-3091.1993.tb01366.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3091.1993.tb01366.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3091.1993.tb01366.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Sedimentology volume 40, issue 5, page 869-877 ISSN 0037-0746 1365-3091 journal-article 1993 crwiley https://doi.org/10.1111/j.1365-3091.1993.tb01366.x 2024-05-03T11:52:57Z ABSTRACT Depositional hydrodynamics have been studied using settling rate distributions of Norwegian deep sea sediments (between Jan Mayen Island and the Vøring Plateau), together with Shields’ critical shear stress velocities. Planktonic foraminifera are the dominant sand sized component of these sediments. The bulk density of the foraminifera was calculated from their settling velocity, sieve size and shape. Density decreases from 2·39 g cm −3 at 0·05 mm diameter to 1·37 g cm −3 at 0·35 mm diameter. These density and size data were used to construct a threshold sediment movement curve. From the similarity in their Shield's critical shear‐stress velocities and the observed correlation of foraminifera size with decreasing percentage of fine fraction, it is concluded that the two components, the sand size foraminifera and the quartz and carbonate silt, are transport‐equivalent. Article in Journal/Newspaper Jan Mayen Jan Mayen Island Planktonic foraminifera Wiley Online Library Jan Mayen Vøring Plateau ENVELOPE(4.000,4.000,67.000,67.000) Sedimentology 40 5 869 877 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
ABSTRACT Depositional hydrodynamics have been studied using settling rate distributions of Norwegian deep sea sediments (between Jan Mayen Island and the Vøring Plateau), together with Shields’ critical shear stress velocities. Planktonic foraminifera are the dominant sand sized component of these sediments. The bulk density of the foraminifera was calculated from their settling velocity, sieve size and shape. Density decreases from 2·39 g cm −3 at 0·05 mm diameter to 1·37 g cm −3 at 0·35 mm diameter. These density and size data were used to construct a threshold sediment movement curve. From the similarity in their Shield's critical shear‐stress velocities and the observed correlation of foraminifera size with decreasing percentage of fine fraction, it is concluded that the two components, the sand size foraminifera and the quartz and carbonate silt, are transport‐equivalent. |
format |
Article in Journal/Newspaper |
author |
OEHMIG, REINHARD |
spellingShingle |
OEHMIG, REINHARD Entrainment of planktonic foraminifera: effect of bulk density |
author_facet |
OEHMIG, REINHARD |
author_sort |
OEHMIG, REINHARD |
title |
Entrainment of planktonic foraminifera: effect of bulk density |
title_short |
Entrainment of planktonic foraminifera: effect of bulk density |
title_full |
Entrainment of planktonic foraminifera: effect of bulk density |
title_fullStr |
Entrainment of planktonic foraminifera: effect of bulk density |
title_full_unstemmed |
Entrainment of planktonic foraminifera: effect of bulk density |
title_sort |
entrainment of planktonic foraminifera: effect of bulk density |
publisher |
Wiley |
publishDate |
1993 |
url |
http://dx.doi.org/10.1111/j.1365-3091.1993.tb01366.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3091.1993.tb01366.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3091.1993.tb01366.x |
long_lat |
ENVELOPE(4.000,4.000,67.000,67.000) |
geographic |
Jan Mayen Vøring Plateau |
geographic_facet |
Jan Mayen Vøring Plateau |
genre |
Jan Mayen Jan Mayen Island Planktonic foraminifera |
genre_facet |
Jan Mayen Jan Mayen Island Planktonic foraminifera |
op_source |
Sedimentology volume 40, issue 5, page 869-877 ISSN 0037-0746 1365-3091 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-3091.1993.tb01366.x |
container_title |
Sedimentology |
container_volume |
40 |
container_issue |
5 |
container_start_page |
869 |
op_container_end_page |
877 |
_version_ |
1800755404732366848 |