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The Origin and Nature of Magnetic Particles From Soils and Sediments Constrained by Hydrodynamics and Geochemistry Around a Tropical Lagoon System
Magnetic iron oxides are commonly enriched in soils and sediments on Earth's surface. Magnetic properties are widely employed in soil taxonomy, sediment tracing and paleoclimate reconstruction as indicators of associated pedogenic and depositional processes. However, in coastal regions, frequen...
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Published in: | Journal of geophysical research. Oceans 2024-09, Vol.129 (9), p.n/a |
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description | Magnetic iron oxides are commonly enriched in soils and sediments on Earth's surface. Magnetic properties are widely employed in soil taxonomy, sediment tracing and paleoclimate reconstruction as indicators of associated pedogenic and depositional processes. However, in coastal regions, frequent shifts in pedogenesis and diagenesis accompanied by changes in hydrodynamic and geochemical conditions from land to sea can influence the formation and preservation of magnetic particles in sediment sequences. To discern the origin and nature of magnetic particles driven by these processes, we systematically examined soils and sediments around a tropical lagoon that has been closing for two hundred years. We found that the finest superparamagnetic particles are enriched along with hematite from inland soils with high‐Fe and high‐Al backgrounds, which was driven by pedogenesis. Single‐domain ferrimagnetic particles are enriched along with amorphous iron oxides in the lagoon with high‐Mg and high‐Mn backgrounds, which was driven by early diagenesis in quiet and reducing depositional environments. Coarse titanomagnetite particles are strongly enriched in inshore sediments with high‐Si and high‐Ti backgrounds, which was driven by seawater elutriation. However, magnetic particles in barrier bar soils have mixed features depending on the neighboring environment. Identifying magnetic particles derived from different soils and sediments in tropical coastal regions can assist in tropical coastal paleoclimate and paleoenvironment reconstruction on the basis of magnetic properties along coastal sediment sequences.
Plain Language Summary
Magnetic particles and iron oxides in soils and sediments can be used for sediment tracing and paleoclimate reconstructions. Interpretations are more complex in coastal environments and are accompanied by paleoenvironmental changes. In this study, we collected samples from around a tropical lagoon to systematically analyze the effects of different coastal locations on magnetic particles and iron oxides in soils and sediments. We find that the finest magnetic particles are enriched along with hematite in inland soils. Medium‐sized magnetic particles are enriched along with amorphous iron oxides in the lagoon in quiet and reducing environments. The coarsest magnetic particles are enriched in inshore sediments as a result of seawater waves. However, magnetic particles in barrier bar soils have mixed features depending on the surrounding environme |
doi_str_mv | 10.1029/2024JC020913 |
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Plain Language Summary
Magnetic particles and iron oxides in soils and sediments can be used for sediment tracing and paleoclimate reconstructions. Interpretations are more complex in coastal environments and are accompanied by paleoenvironmental changes. In this study, we collected samples from around a tropical lagoon to systematically analyze the effects of different coastal locations on magnetic particles and iron oxides in soils and sediments. We find that the finest magnetic particles are enriched along with hematite in inland soils. Medium‐sized magnetic particles are enriched along with amorphous iron oxides in the lagoon in quiet and reducing environments. The coarsest magnetic particles are enriched in inshore sediments as a result of seawater waves. However, magnetic particles in barrier bar soils have mixed features depending on the surrounding environment. Our work assists in discerning magnetic iron oxides from different soils and sediments for paleoclimate and paleoenvironmental reconstruction research in tropical coastal areas.
Key Points
Soil and sediment samples around a tropical lagoon were analyzed via geochemical and magnetic methods
Different origins of magnetic particles are associated with hydrodynamic and geochemical backgrounds
Different types of magnetic particles can be used to reconstruct coastal paleoenvironments</description><identifier>ISSN: 2169-9275</identifier><identifier>EISSN: 2169-9291</identifier><identifier>DOI: 10.1029/2024JC020913</identifier><language>eng</language><publisher>Washington: Blackwell Publishing Ltd</publisher><subject>Aluminum ; Chemical analysis ; Coastal effects ; Coastal environments ; Coastal plains ; Coastal processes ; Coastal sediments ; Coastal zone ; Coastal zones ; Diagenesis ; Earth surface ; Elutriation ; Enrichment ; Geochemistry ; Haematite ; Hematite ; Hydrodynamics ; Iron ; Iron oxides ; Lagoons ; Magnesium ; Magnetic properties ; magnetism ; Oxides ; Paleoclimate ; paleoclimate reconstruction ; Paleoclimatology ; pedogenesis ; Reconstruction ; Seawater ; Sediment ; Sedimentary environments ; Sediments ; Sequences ; Soil ; Soil analysis ; Soil formation ; Soil properties ; Soils ; Taxonomy ; Tracing ; Water analysis</subject><ispartof>Journal of geophysical research. Oceans, 2024-09, Vol.129 (9), p.n/a</ispartof><rights>2024. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-a2174-abb0660dab2aa0116736b9600ce3864dede5dfd1fcfd74bc3f55446f168e7d363</cites><orcidid>0009-0002-6888-6170 ; 0000-0002-6005-2617 ; 0009-0006-1433-7351</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Zhang, Xinming</creatorcontrib><creatorcontrib>Long, Xiaoyong</creatorcontrib><creatorcontrib>Xiong, Chunlin</creatorcontrib><creatorcontrib>Liu, Chuan</creatorcontrib><creatorcontrib>Song, Yanwei</creatorcontrib><title>The Origin and Nature of Magnetic Particles From Soils and Sediments Constrained by Hydrodynamics and Geochemistry Around a Tropical Lagoon System</title><title>Journal of geophysical research. Oceans</title><description>Magnetic iron oxides are commonly enriched in soils and sediments on Earth's surface. Magnetic properties are widely employed in soil taxonomy, sediment tracing and paleoclimate reconstruction as indicators of associated pedogenic and depositional processes. However, in coastal regions, frequent shifts in pedogenesis and diagenesis accompanied by changes in hydrodynamic and geochemical conditions from land to sea can influence the formation and preservation of magnetic particles in sediment sequences. To discern the origin and nature of magnetic particles driven by these processes, we systematically examined soils and sediments around a tropical lagoon that has been closing for two hundred years. We found that the finest superparamagnetic particles are enriched along with hematite from inland soils with high‐Fe and high‐Al backgrounds, which was driven by pedogenesis. Single‐domain ferrimagnetic particles are enriched along with amorphous iron oxides in the lagoon with high‐Mg and high‐Mn backgrounds, which was driven by early diagenesis in quiet and reducing depositional environments. Coarse titanomagnetite particles are strongly enriched in inshore sediments with high‐Si and high‐Ti backgrounds, which was driven by seawater elutriation. However, magnetic particles in barrier bar soils have mixed features depending on the neighboring environment. Identifying magnetic particles derived from different soils and sediments in tropical coastal regions can assist in tropical coastal paleoclimate and paleoenvironment reconstruction on the basis of magnetic properties along coastal sediment sequences.
Plain Language Summary
Magnetic particles and iron oxides in soils and sediments can be used for sediment tracing and paleoclimate reconstructions. Interpretations are more complex in coastal environments and are accompanied by paleoenvironmental changes. In this study, we collected samples from around a tropical lagoon to systematically analyze the effects of different coastal locations on magnetic particles and iron oxides in soils and sediments. We find that the finest magnetic particles are enriched along with hematite in inland soils. Medium‐sized magnetic particles are enriched along with amorphous iron oxides in the lagoon in quiet and reducing environments. The coarsest magnetic particles are enriched in inshore sediments as a result of seawater waves. However, magnetic particles in barrier bar soils have mixed features depending on the surrounding environment. Our work assists in discerning magnetic iron oxides from different soils and sediments for paleoclimate and paleoenvironmental reconstruction research in tropical coastal areas.
Key Points
Soil and sediment samples around a tropical lagoon were analyzed via geochemical and magnetic methods
Different origins of magnetic particles are associated with hydrodynamic and geochemical backgrounds
Different types of magnetic particles can be used to reconstruct coastal paleoenvironments</description><subject>Aluminum</subject><subject>Chemical analysis</subject><subject>Coastal effects</subject><subject>Coastal environments</subject><subject>Coastal plains</subject><subject>Coastal processes</subject><subject>Coastal sediments</subject><subject>Coastal zone</subject><subject>Coastal zones</subject><subject>Diagenesis</subject><subject>Earth surface</subject><subject>Elutriation</subject><subject>Enrichment</subject><subject>Geochemistry</subject><subject>Haematite</subject><subject>Hematite</subject><subject>Hydrodynamics</subject><subject>Iron</subject><subject>Iron oxides</subject><subject>Lagoons</subject><subject>Magnesium</subject><subject>Magnetic properties</subject><subject>magnetism</subject><subject>Oxides</subject><subject>Paleoclimate</subject><subject>paleoclimate reconstruction</subject><subject>Paleoclimatology</subject><subject>pedogenesis</subject><subject>Reconstruction</subject><subject>Seawater</subject><subject>Sediment</subject><subject>Sedimentary environments</subject><subject>Sediments</subject><subject>Sequences</subject><subject>Soil</subject><subject>Soil analysis</subject><subject>Soil formation</subject><subject>Soil properties</subject><subject>Soils</subject><subject>Taxonomy</subject><subject>Tracing</subject><subject>Water analysis</subject><issn>2169-9275</issn><issn>2169-9291</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp90M1Kw0AQB_AgCpbamw-w4NXqfmWTHEuwraVasfUcNtlJuyXZrbsJktfwiU2tiCfn8h-GHzMwQXBN8B3BNLmnmPJFiilOCDsLBpSIZJzQhJz_9lF4GYy83-O-YhJzngyCz80O0MrprTZIGoWeZdM6QLZET3JroNEFepGujwo8mjpbo7XVlf-2a1C6BtN4lFrjGye1AYXyDs075azqjKx1caIzsMUOat2rDk2cbfuZRBtnD7qQFVrKrbUGrTvfQH0VXJSy8jD6yWHwNn3YpPPxcjV7TCfLsaQk4mOZ51gIrGROpcSEiIiJPBEYF8BiwRUoCFWpSFmUKuJ5wcow5FyURMQQKSbYMLg57T04-96Cb7K9bZ3pT2aM4CSMCAmP6vakCme9d1BmB6dr6bqM4Oz4-Ozv43vOTvxDV9D9a7PF7DWlAsecfQHnWYXM</recordid><startdate>202409</startdate><enddate>202409</enddate><creator>Zhang, Xinming</creator><creator>Long, Xiaoyong</creator><creator>Xiong, Chunlin</creator><creator>Liu, Chuan</creator><creator>Song, Yanwei</creator><general>Blackwell Publishing Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7TN</scope><scope>F1W</scope><scope>H96</scope><scope>KL.</scope><scope>L.G</scope><orcidid>https://orcid.org/0009-0002-6888-6170</orcidid><orcidid>https://orcid.org/0000-0002-6005-2617</orcidid><orcidid>https://orcid.org/0009-0006-1433-7351</orcidid></search><sort><creationdate>202409</creationdate><title>The Origin and Nature of Magnetic Particles From Soils and Sediments Constrained by Hydrodynamics and Geochemistry Around a Tropical Lagoon System</title><author>Zhang, Xinming ; Long, Xiaoyong ; Xiong, Chunlin ; Liu, Chuan ; Song, Yanwei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a2174-abb0660dab2aa0116736b9600ce3864dede5dfd1fcfd74bc3f55446f168e7d363</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Aluminum</topic><topic>Chemical analysis</topic><topic>Coastal effects</topic><topic>Coastal environments</topic><topic>Coastal plains</topic><topic>Coastal processes</topic><topic>Coastal sediments</topic><topic>Coastal zone</topic><topic>Coastal zones</topic><topic>Diagenesis</topic><topic>Earth surface</topic><topic>Elutriation</topic><topic>Enrichment</topic><topic>Geochemistry</topic><topic>Haematite</topic><topic>Hematite</topic><topic>Hydrodynamics</topic><topic>Iron</topic><topic>Iron oxides</topic><topic>Lagoons</topic><topic>Magnesium</topic><topic>Magnetic properties</topic><topic>magnetism</topic><topic>Oxides</topic><topic>Paleoclimate</topic><topic>paleoclimate reconstruction</topic><topic>Paleoclimatology</topic><topic>pedogenesis</topic><topic>Reconstruction</topic><topic>Seawater</topic><topic>Sediment</topic><topic>Sedimentary environments</topic><topic>Sediments</topic><topic>Sequences</topic><topic>Soil</topic><topic>Soil analysis</topic><topic>Soil formation</topic><topic>Soil properties</topic><topic>Soils</topic><topic>Taxonomy</topic><topic>Tracing</topic><topic>Water analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Xinming</creatorcontrib><creatorcontrib>Long, Xiaoyong</creatorcontrib><creatorcontrib>Xiong, Chunlin</creatorcontrib><creatorcontrib>Liu, Chuan</creatorcontrib><creatorcontrib>Song, Yanwei</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Journal of geophysical research. Oceans</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Xinming</au><au>Long, Xiaoyong</au><au>Xiong, Chunlin</au><au>Liu, Chuan</au><au>Song, Yanwei</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Origin and Nature of Magnetic Particles From Soils and Sediments Constrained by Hydrodynamics and Geochemistry Around a Tropical Lagoon System</atitle><jtitle>Journal of geophysical research. Oceans</jtitle><date>2024-09</date><risdate>2024</risdate><volume>129</volume><issue>9</issue><epage>n/a</epage><issn>2169-9275</issn><eissn>2169-9291</eissn><abstract>Magnetic iron oxides are commonly enriched in soils and sediments on Earth's surface. Magnetic properties are widely employed in soil taxonomy, sediment tracing and paleoclimate reconstruction as indicators of associated pedogenic and depositional processes. However, in coastal regions, frequent shifts in pedogenesis and diagenesis accompanied by changes in hydrodynamic and geochemical conditions from land to sea can influence the formation and preservation of magnetic particles in sediment sequences. To discern the origin and nature of magnetic particles driven by these processes, we systematically examined soils and sediments around a tropical lagoon that has been closing for two hundred years. We found that the finest superparamagnetic particles are enriched along with hematite from inland soils with high‐Fe and high‐Al backgrounds, which was driven by pedogenesis. Single‐domain ferrimagnetic particles are enriched along with amorphous iron oxides in the lagoon with high‐Mg and high‐Mn backgrounds, which was driven by early diagenesis in quiet and reducing depositional environments. Coarse titanomagnetite particles are strongly enriched in inshore sediments with high‐Si and high‐Ti backgrounds, which was driven by seawater elutriation. However, magnetic particles in barrier bar soils have mixed features depending on the neighboring environment. Identifying magnetic particles derived from different soils and sediments in tropical coastal regions can assist in tropical coastal paleoclimate and paleoenvironment reconstruction on the basis of magnetic properties along coastal sediment sequences.
Plain Language Summary
Magnetic particles and iron oxides in soils and sediments can be used for sediment tracing and paleoclimate reconstructions. Interpretations are more complex in coastal environments and are accompanied by paleoenvironmental changes. In this study, we collected samples from around a tropical lagoon to systematically analyze the effects of different coastal locations on magnetic particles and iron oxides in soils and sediments. We find that the finest magnetic particles are enriched along with hematite in inland soils. Medium‐sized magnetic particles are enriched along with amorphous iron oxides in the lagoon in quiet and reducing environments. The coarsest magnetic particles are enriched in inshore sediments as a result of seawater waves. However, magnetic particles in barrier bar soils have mixed features depending on the surrounding environment. Our work assists in discerning magnetic iron oxides from different soils and sediments for paleoclimate and paleoenvironmental reconstruction research in tropical coastal areas.
Key Points
Soil and sediment samples around a tropical lagoon were analyzed via geochemical and magnetic methods
Different origins of magnetic particles are associated with hydrodynamic and geochemical backgrounds
Different types of magnetic particles can be used to reconstruct coastal paleoenvironments</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2024JC020913</doi><tpages>16</tpages><orcidid>https://orcid.org/0009-0002-6888-6170</orcidid><orcidid>https://orcid.org/0000-0002-6005-2617</orcidid><orcidid>https://orcid.org/0009-0006-1433-7351</orcidid></addata></record> |
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subjects | Aluminum Chemical analysis Coastal effects Coastal environments Coastal plains Coastal processes Coastal sediments Coastal zone Coastal zones Diagenesis Earth surface Elutriation Enrichment Geochemistry Haematite Hematite Hydrodynamics Iron Iron oxides Lagoons Magnesium Magnetic properties magnetism Oxides Paleoclimate paleoclimate reconstruction Paleoclimatology pedogenesis Reconstruction Seawater Sediment Sedimentary environments Sediments Sequences Soil Soil analysis Soil formation Soil properties Soils Taxonomy Tracing Water analysis |
title | The Origin and Nature of Magnetic Particles From Soils and Sediments Constrained by Hydrodynamics and Geochemistry Around a Tropical Lagoon System |
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