Particle Size Specific Magnetic Properties Across the Norwegian‐Greenland Seas: Insights Into the Influence of Sediment Source and Texture on Bulk Magnetic Records
We make fundamental observations of the particle size variability of magnetic properties from 71 core tops that span the southern Greenland and Norwegian Seas. These data provide the first detailed regional characterization of how bulk magnetic properties vary with sediment texture, sediment source,...
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ftwestwashington:oai:cedar.wwu.edu:geology_facpubs-1099 2023-05-15T16:27:22+02:00 Particle Size Specific Magnetic Properties Across the Norwegian‐Greenland Seas: Insights Into the Influence of Sediment Source and Texture on Bulk Magnetic Records Hatfield, Robert G. Wheeler, Benjamin H. Reilly, Brendan T. Stoner, Joseph S. Housen, Bernard A. 2019-02-01T08:00:00Z application/pdf https://cedar.wwu.edu/geology_facpubs/100 https://cedar.wwu.edu/cgi/viewcontent.cgi?article=1099&context=geology_facpubs English eng Western CEDAR https://cedar.wwu.edu/geology_facpubs/100 https://cedar.wwu.edu/cgi/viewcontent.cgi?article=1099&context=geology_facpubs Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author’s written permission. Geology Faculty Publications Northern Basaltic Province Magnetic susceptibility Nordic Seas Magnetic grain size Sediment transport Geology text 2019 ftwestwashington 2022-09-14T06:04:53Z We make fundamental observations of the particle size variability of magnetic properties from 71 core tops that span the southern Greenland and Norwegian Seas. These data provide the first detailed regional characterization of how bulk magnetic properties vary with sediment texture, sediment source, and sediment transport. Magnetic susceptibility (MS) and hysteresis parameters were measured on the bulk sediment and the five constituent sediment particle size fractions (clay, fine silt, medium silt, coarse silt, and sand). The median MS value of the medium silt size fraction is ~3–5 times higher than that of the sand and clay size fractions and results in a strong sensitivity of bulk MS to sediment texture. Hysteresis properties of the clay size fraction are relatively homogeneous and contrast that silt and sand size fractions which show regional differences across the study area. These coarser fractions are more transport limited and using medium silt hysteresis measurements and low temperature MS behavior we establish three endmembers that effectively explain the variability observed across the region. We model the response of bulk magnetic properties to changes in sediment texture and suggest that variations in sediment source are required to explain the bulk magnetic property variability observed in cores across the southern Greenland and Norwegian Seas. These findings imply that sediment source has a greater influence on driving bulk magnetic property variability across this region than has previously been assumed. Text Greenland Nordic Seas Western Washington University: CEDAR (Contributing to Education through Digital Access to Research) Greenland |
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Open Polar |
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Western Washington University: CEDAR (Contributing to Education through Digital Access to Research) |
op_collection_id |
ftwestwashington |
language |
English |
topic |
Northern Basaltic Province Magnetic susceptibility Nordic Seas Magnetic grain size Sediment transport Geology |
spellingShingle |
Northern Basaltic Province Magnetic susceptibility Nordic Seas Magnetic grain size Sediment transport Geology Hatfield, Robert G. Wheeler, Benjamin H. Reilly, Brendan T. Stoner, Joseph S. Housen, Bernard A. Particle Size Specific Magnetic Properties Across the Norwegian‐Greenland Seas: Insights Into the Influence of Sediment Source and Texture on Bulk Magnetic Records |
topic_facet |
Northern Basaltic Province Magnetic susceptibility Nordic Seas Magnetic grain size Sediment transport Geology |
description |
We make fundamental observations of the particle size variability of magnetic properties from 71 core tops that span the southern Greenland and Norwegian Seas. These data provide the first detailed regional characterization of how bulk magnetic properties vary with sediment texture, sediment source, and sediment transport. Magnetic susceptibility (MS) and hysteresis parameters were measured on the bulk sediment and the five constituent sediment particle size fractions (clay, fine silt, medium silt, coarse silt, and sand). The median MS value of the medium silt size fraction is ~3–5 times higher than that of the sand and clay size fractions and results in a strong sensitivity of bulk MS to sediment texture. Hysteresis properties of the clay size fraction are relatively homogeneous and contrast that silt and sand size fractions which show regional differences across the study area. These coarser fractions are more transport limited and using medium silt hysteresis measurements and low temperature MS behavior we establish three endmembers that effectively explain the variability observed across the region. We model the response of bulk magnetic properties to changes in sediment texture and suggest that variations in sediment source are required to explain the bulk magnetic property variability observed in cores across the southern Greenland and Norwegian Seas. These findings imply that sediment source has a greater influence on driving bulk magnetic property variability across this region than has previously been assumed. |
format |
Text |
author |
Hatfield, Robert G. Wheeler, Benjamin H. Reilly, Brendan T. Stoner, Joseph S. Housen, Bernard A. |
author_facet |
Hatfield, Robert G. Wheeler, Benjamin H. Reilly, Brendan T. Stoner, Joseph S. Housen, Bernard A. |
author_sort |
Hatfield, Robert G. |
title |
Particle Size Specific Magnetic Properties Across the Norwegian‐Greenland Seas: Insights Into the Influence of Sediment Source and Texture on Bulk Magnetic Records |
title_short |
Particle Size Specific Magnetic Properties Across the Norwegian‐Greenland Seas: Insights Into the Influence of Sediment Source and Texture on Bulk Magnetic Records |
title_full |
Particle Size Specific Magnetic Properties Across the Norwegian‐Greenland Seas: Insights Into the Influence of Sediment Source and Texture on Bulk Magnetic Records |
title_fullStr |
Particle Size Specific Magnetic Properties Across the Norwegian‐Greenland Seas: Insights Into the Influence of Sediment Source and Texture on Bulk Magnetic Records |
title_full_unstemmed |
Particle Size Specific Magnetic Properties Across the Norwegian‐Greenland Seas: Insights Into the Influence of Sediment Source and Texture on Bulk Magnetic Records |
title_sort |
particle size specific magnetic properties across the norwegian‐greenland seas: insights into the influence of sediment source and texture on bulk magnetic records |
publisher |
Western CEDAR |
publishDate |
2019 |
url |
https://cedar.wwu.edu/geology_facpubs/100 https://cedar.wwu.edu/cgi/viewcontent.cgi?article=1099&context=geology_facpubs |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Nordic Seas |
genre_facet |
Greenland Nordic Seas |
op_source |
Geology Faculty Publications |
op_relation |
https://cedar.wwu.edu/geology_facpubs/100 https://cedar.wwu.edu/cgi/viewcontent.cgi?article=1099&context=geology_facpubs |
op_rights |
Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author’s written permission. |
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1766016532235681792 |