Sedimentary CaCO3 Accumulation in the Deep West Pacific Ocean
Distribution of calcium carbonate (CaCO3) in marine sediment has been studied over the last century, and influence by multiple factors with regard to dissolution and dilution of sedimentary CaCO3 has long been established. There is still lack of quantification on the influence of those factors, so i...
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| Format: | Article |
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Frontiers Media S.A.
2022-04-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.857260/full |
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| author | Handan Zhang Handan Zhang Handan Zhang Hong Che Jinqi Xia Qi Cheng Di Qi Junqian Cao Yiming Luo Yiming Luo Yiming Luo |
| author_facet | Handan Zhang Handan Zhang Handan Zhang Hong Che Jinqi Xia Qi Cheng Di Qi Junqian Cao Yiming Luo Yiming Luo Yiming Luo |
| author_sort | Handan Zhang |
| collection | DOAJ |
| description | Distribution of calcium carbonate (CaCO3) in marine sediment has been studied over the last century, and influence by multiple factors with regard to dissolution and dilution of sedimentary CaCO3 has long been established. There is still lack of quantification on the influence of those factors, so it remains elusive to determine which specific process is driving the down-core variation of CaCO3 content (wtCaCO3%) records. Here, based on a newly compiled CaCO3 data set and a carbonate model, depth-profiles of sedimentary wtCaCO3% from the West Pacific Ocean can be well illustrated, and influence from different factors on their distribution features can be quantified. The deep ocean circulation is found to largely shape the inter-basin disparity in sedimentary wtCaCO3% distribution between the equatorial regions (e.g., the Western Equatorial Pacific Ocean and the Central Pacific Ocean) and the north–west regions (the Philippine Sea and the Northwest Pacific Ocean) in our study region. Moreover, the slow carbonate dissolution rate in the deep Central Pacific Ocean guarantees better accumulation of CaCO3 at depth compared to that in other regions. However, enhanced dilution by non-carbonate materials of sedimentary CaCO3 on a topographic complex can potentially obstruct the dissolution profiles constituted by sedimentary wtCaCO3% in the pelagic ocean. The aforementioned assertion suggests that changes of wtCaCO3% accumulation in marine sediment in the West Pacific Ocean can be used to dictate past changes of the deep ocean circulation (2,500 to 3,000 m) in this area but constraint on the non-carbonate flux, especially on the topographic complex, should be necessary. |
| first_indexed | 2024-04-14T06:01:00Z |
| format | Article |
| id | doaj.art-8a8869858a5a4186913778f642f904b7 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-14T06:01:00Z |
| publishDate | 2022-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-8a8869858a5a4186913778f642f904b72022-12-22T02:08:46ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632022-04-011010.3389/feart.2022.857260857260Sedimentary CaCO3 Accumulation in the Deep West Pacific OceanHandan Zhang0Handan Zhang1Handan Zhang2Hong Che3Jinqi Xia4Qi Cheng5Di Qi6Junqian Cao7Yiming Luo8Yiming Luo9Yiming Luo10School of Marine Sciences, Sun Yat-Sen University, Zhuhai, ChinaSouthern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong, ChinaGuangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou, ChinaPilot National Laboratory for Marine Science and Technology, Qingdao, ChinaSchool of Marine Sciences, Sun Yat-Sen University, Zhuhai, ChinaSchool of Marine Sciences, Sun Yat-Sen University, Zhuhai, ChinaPolar and Marine Research Institute, College of Harbor and Coastal Engineering, Jimei University, Xiamen, ChinaSchool of Marine Sciences, Sun Yat-Sen University, Zhuhai, ChinaSchool of Marine Sciences, Sun Yat-Sen University, Zhuhai, ChinaSouthern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong, ChinaGuangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou, ChinaDistribution of calcium carbonate (CaCO3) in marine sediment has been studied over the last century, and influence by multiple factors with regard to dissolution and dilution of sedimentary CaCO3 has long been established. There is still lack of quantification on the influence of those factors, so it remains elusive to determine which specific process is driving the down-core variation of CaCO3 content (wtCaCO3%) records. Here, based on a newly compiled CaCO3 data set and a carbonate model, depth-profiles of sedimentary wtCaCO3% from the West Pacific Ocean can be well illustrated, and influence from different factors on their distribution features can be quantified. The deep ocean circulation is found to largely shape the inter-basin disparity in sedimentary wtCaCO3% distribution between the equatorial regions (e.g., the Western Equatorial Pacific Ocean and the Central Pacific Ocean) and the north–west regions (the Philippine Sea and the Northwest Pacific Ocean) in our study region. Moreover, the slow carbonate dissolution rate in the deep Central Pacific Ocean guarantees better accumulation of CaCO3 at depth compared to that in other regions. However, enhanced dilution by non-carbonate materials of sedimentary CaCO3 on a topographic complex can potentially obstruct the dissolution profiles constituted by sedimentary wtCaCO3% in the pelagic ocean. The aforementioned assertion suggests that changes of wtCaCO3% accumulation in marine sediment in the West Pacific Ocean can be used to dictate past changes of the deep ocean circulation (2,500 to 3,000 m) in this area but constraint on the non-carbonate flux, especially on the topographic complex, should be necessary.https://www.frontiersin.org/articles/10.3389/feart.2022.857260/fullsurface sedimentoverturning circulationnon-carbonate dilutionCaCO3Western Pacific |
| spellingShingle | Handan Zhang Handan Zhang Handan Zhang Hong Che Jinqi Xia Qi Cheng Di Qi Junqian Cao Yiming Luo Yiming Luo Yiming Luo Sedimentary CaCO3 Accumulation in the Deep West Pacific Ocean Frontiers in Earth Science surface sediment overturning circulation non-carbonate dilution CaCO3 Western Pacific |
| title | Sedimentary CaCO3 Accumulation in the Deep West Pacific Ocean |
| title_full | Sedimentary CaCO3 Accumulation in the Deep West Pacific Ocean |
| title_fullStr | Sedimentary CaCO3 Accumulation in the Deep West Pacific Ocean |
| title_full_unstemmed | Sedimentary CaCO3 Accumulation in the Deep West Pacific Ocean |
| title_short | Sedimentary CaCO3 Accumulation in the Deep West Pacific Ocean |
| title_sort | sedimentary caco3 accumulation in the deep west pacific ocean |
| topic | surface sediment overturning circulation non-carbonate dilution CaCO3 Western Pacific |
| url | https://www.frontiersin.org/articles/10.3389/feart.2022.857260/full |
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