Structure and directional properties of some valley sandur deposits in southern Iceland
ABSTRACT Sediments in the valley sandurs of Markarfljot and Landmannalaugar accrete in complex lateral (transverse) bars. Directional structures within the bars are more variable in orientation than the channels which contain them. This greater variability is mainly due to the diversification of the...
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crwiley:10.1111/j.1365-3091.1974.tb01789.x 2024-06-09T07:47:09+00:00 Structure and directional properties of some valley sandur deposits in southern Iceland BLUCK, B. J. 1974 http://dx.doi.org/10.1111/j.1365-3091.1974.tb01789.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3091.1974.tb01789.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3091.1974.tb01789.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Sedimentology volume 21, issue 4, page 533-554 ISSN 0037-0746 1365-3091 journal-article 1974 crwiley https://doi.org/10.1111/j.1365-3091.1974.tb01789.x 2024-05-16T14:25:59Z ABSTRACT Sediments in the valley sandurs of Markarfljot and Landmannalaugar accrete in complex lateral (transverse) bars. Directional structures within the bars are more variable in orientation than the channels which contain them. This greater variability is mainly due to the diversification of the flow, at the low stage, as it moves through the accretion topography of the sandur. Different directional structures preferentially record different stages of the flow: imbrication and lineation form mainly in response to the high flow stage, and have a low degree of dispersion; cross‐stratification records the low stage of flow, and has a wide dispersion. Cross‐stratification is produced in four main ways: by small deltas, by megaripples, by ripple topped bars, and by migrating accretionary bar banks. Small deltas form at low flow stage; accretionary banks at high. Article in Journal/Newspaper Iceland Landmannalaugar Wiley Online Library Landmannalaugar ENVELOPE(-19.060,-19.060,63.991,63.991) Sedimentology 21 4 533 554 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
ABSTRACT Sediments in the valley sandurs of Markarfljot and Landmannalaugar accrete in complex lateral (transverse) bars. Directional structures within the bars are more variable in orientation than the channels which contain them. This greater variability is mainly due to the diversification of the flow, at the low stage, as it moves through the accretion topography of the sandur. Different directional structures preferentially record different stages of the flow: imbrication and lineation form mainly in response to the high flow stage, and have a low degree of dispersion; cross‐stratification records the low stage of flow, and has a wide dispersion. Cross‐stratification is produced in four main ways: by small deltas, by megaripples, by ripple topped bars, and by migrating accretionary bar banks. Small deltas form at low flow stage; accretionary banks at high. |
format |
Article in Journal/Newspaper |
author |
BLUCK, B. J. |
spellingShingle |
BLUCK, B. J. Structure and directional properties of some valley sandur deposits in southern Iceland |
author_facet |
BLUCK, B. J. |
author_sort |
BLUCK, B. J. |
title |
Structure and directional properties of some valley sandur deposits in southern Iceland |
title_short |
Structure and directional properties of some valley sandur deposits in southern Iceland |
title_full |
Structure and directional properties of some valley sandur deposits in southern Iceland |
title_fullStr |
Structure and directional properties of some valley sandur deposits in southern Iceland |
title_full_unstemmed |
Structure and directional properties of some valley sandur deposits in southern Iceland |
title_sort |
structure and directional properties of some valley sandur deposits in southern iceland |
publisher |
Wiley |
publishDate |
1974 |
url |
http://dx.doi.org/10.1111/j.1365-3091.1974.tb01789.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3091.1974.tb01789.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3091.1974.tb01789.x |
long_lat |
ENVELOPE(-19.060,-19.060,63.991,63.991) |
geographic |
Landmannalaugar |
geographic_facet |
Landmannalaugar |
genre |
Iceland Landmannalaugar |
genre_facet |
Iceland Landmannalaugar |
op_source |
Sedimentology volume 21, issue 4, page 533-554 ISSN 0037-0746 1365-3091 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-3091.1974.tb01789.x |
container_title |
Sedimentology |
container_volume |
21 |
container_issue |
4 |
container_start_page |
533 |
op_container_end_page |
554 |
_version_ |
1801378064925458432 |