Paleoceanographic signi¢cance of sediment color on western North Atlantic drifts: II. Late Pliocene^Pleistocene sedimentation
Reflectance spectra collected during ODP Leg 172 were used in concert with solid phase iron chemistry, carbonate content, and organic carbon content measurements to evaluate the agents responsible for setting the color in sediments. Factor analysis has proved a valuable and rapid technique to detect...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.542.7167 2023-05-15T17:30:24+02:00 Paleoceanographic signi¢cance of sediment color on western North Atlantic drifts: II. Late Pliocene^Pleistocene sedimentation Liviu Giosan Roger D. Flood Robert C. Aller The Pennsylvania State University CiteSeerX Archives 2002 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.542.7167 http://www.whoi.edu/science/GG/coastal/publications/pdfs/GiosanFloodAller2002.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.542.7167 http://www.whoi.edu/science/GG/coastal/publications/pdfs/GiosanFloodAller2002.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.whoi.edu/science/GG/coastal/publications/pdfs/GiosanFloodAller2002.pdf re£ectance spectra carbonate iron minerals reduction Blake^Bahama Outer Ridge Bermuda Rise text 2002 ftciteseerx 2016-01-08T11:08:37Z Reflectance spectra collected during ODP Leg 172 were used in concert with solid phase iron chemistry, carbonate content, and organic carbon content measurements to evaluate the agents responsible for setting the color in sediments. Factor analysis has proved a valuable and rapid technique to detect the local and regional primary factors that influence sediment color. On the western North Atlantic drifts, sediment color is the result of primary mineralogy as well as diagenetic changes. Sediment lightness is controlled by the carbonate content while the hue is primarily due to the presence of hematite and Fe2þ/Fe3þ changes in clay minerals. Hematite, most likely derived from the Permo-Carboniferous red beds of the Canadian Maritimes, is differentially preserved at various sites due to differences in reductive diagenesis and dilution by other sedimentary components. Various intensities for diagenesis result from changes in organic carbon content, sedimentation rates, and H2S production via anaerobic methane oxidation. Iron monosulfides occur extensively at all high sedimentation sites especially in glacial periods suggesting increased high terrigenous flux and/or increased reactive iron flux in glacials. 7 2002 Elsevier Science B.V. All rights reserved. Text North Atlantic Unknown |
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ftciteseerx |
language |
English |
topic |
re£ectance spectra carbonate iron minerals reduction Blake^Bahama Outer Ridge Bermuda Rise |
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re£ectance spectra carbonate iron minerals reduction Blake^Bahama Outer Ridge Bermuda Rise Liviu Giosan Roger D. Flood Robert C. Aller Paleoceanographic signi¢cance of sediment color on western North Atlantic drifts: II. Late Pliocene^Pleistocene sedimentation |
topic_facet |
re£ectance spectra carbonate iron minerals reduction Blake^Bahama Outer Ridge Bermuda Rise |
description |
Reflectance spectra collected during ODP Leg 172 were used in concert with solid phase iron chemistry, carbonate content, and organic carbon content measurements to evaluate the agents responsible for setting the color in sediments. Factor analysis has proved a valuable and rapid technique to detect the local and regional primary factors that influence sediment color. On the western North Atlantic drifts, sediment color is the result of primary mineralogy as well as diagenetic changes. Sediment lightness is controlled by the carbonate content while the hue is primarily due to the presence of hematite and Fe2þ/Fe3þ changes in clay minerals. Hematite, most likely derived from the Permo-Carboniferous red beds of the Canadian Maritimes, is differentially preserved at various sites due to differences in reductive diagenesis and dilution by other sedimentary components. Various intensities for diagenesis result from changes in organic carbon content, sedimentation rates, and H2S production via anaerobic methane oxidation. Iron monosulfides occur extensively at all high sedimentation sites especially in glacial periods suggesting increased high terrigenous flux and/or increased reactive iron flux in glacials. 7 2002 Elsevier Science B.V. All rights reserved. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Liviu Giosan Roger D. Flood Robert C. Aller |
author_facet |
Liviu Giosan Roger D. Flood Robert C. Aller |
author_sort |
Liviu Giosan |
title |
Paleoceanographic signi¢cance of sediment color on western North Atlantic drifts: II. Late Pliocene^Pleistocene sedimentation |
title_short |
Paleoceanographic signi¢cance of sediment color on western North Atlantic drifts: II. Late Pliocene^Pleistocene sedimentation |
title_full |
Paleoceanographic signi¢cance of sediment color on western North Atlantic drifts: II. Late Pliocene^Pleistocene sedimentation |
title_fullStr |
Paleoceanographic signi¢cance of sediment color on western North Atlantic drifts: II. Late Pliocene^Pleistocene sedimentation |
title_full_unstemmed |
Paleoceanographic signi¢cance of sediment color on western North Atlantic drifts: II. Late Pliocene^Pleistocene sedimentation |
title_sort |
paleoceanographic signi¢cance of sediment color on western north atlantic drifts: ii. late pliocene^pleistocene sedimentation |
publishDate |
2002 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.542.7167 http://www.whoi.edu/science/GG/coastal/publications/pdfs/GiosanFloodAller2002.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
http://www.whoi.edu/science/GG/coastal/publications/pdfs/GiosanFloodAller2002.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.542.7167 http://www.whoi.edu/science/GG/coastal/publications/pdfs/GiosanFloodAller2002.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766126777703333888 |