On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil
Much of the present coastal plains in the Malay Peninsula were inundated by seawater some 6,000 years ago. That was the time when pyrite is believed to have been mineralized in the sediments of the seawater. This paper attempts to explain the process of pyrite mineralization in the coastal sediments...
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| Format: | Article |
| Language: | English |
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Malaysian Society of Soil Science
2013
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| Online Access: | http://psasir.upm.edu.my/id/eprint/29409/1/On%20the%20pyritization%20of%20the%20coastal%20sediments%20in%20the%20Malay%20Peninsula%20during%20the%20Holocene%20and%20its%20effects%20on%20soil.pdf |
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| author | Jusop, Shamshuddin Mohd Sufian Kang, Enio Kang Ishak, Che Fauziah Panhwar, Qurban Ali |
| author_facet | Jusop, Shamshuddin Mohd Sufian Kang, Enio Kang Ishak, Che Fauziah Panhwar, Qurban Ali |
| author_sort | Jusop, Shamshuddin |
| collection | UPM |
| description | Much of the present coastal plains in the Malay Peninsula were inundated by seawater some 6,000 years ago. That was the time when pyrite is believed to have been mineralized in the sediments of the seawater. This paper attempts to explain the process of pyrite mineralization in the coastal sediments during the Holocene as well as to show how pyrite oxidation affects plants and aquatic life in their vicinity. At that point in time, the sea level was 3-5 meters above the present level. Under reduced conditions, Fe3+ ions existing in the sediments were reduced to Fe2+ ions, while SO42- anions from seawater were reduced to S2- ions. These reactions were promoted by microorganisms feeding on the organic matter provided by native vegetation. Finally, the ferrous and polysulfide ions reacted to form pyrite (FeS2). Over the years, this pyrite accumulated in the sediments, occurring at varying depths. In some sediment of the coastal plains of the Malay Peninsula, there are considerable amounts of pyrite; however, they are environment-friendly. When the areas are developed for agriculture or otherwise, this pyrite is exposed to atmospheric conditions, resulting in its oxidation which in turn leads to acidity and the formation of yellowish jarosite [KFe3(SO4)2(OH)6]. Toxic amounts of Al and Fe are usually present in the soils and water in the area, affecting crop growth and aquatic life. |
| first_indexed | 2024-03-06T08:14:25Z |
| format | Article |
| id | upm.eprints-29409 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T08:14:25Z |
| publishDate | 2013 |
| publisher | Malaysian Society of Soil Science |
| record_format | dspace |
| spelling | upm.eprints-294092016-07-13T01:48:36Z http://psasir.upm.edu.my/id/eprint/29409/ On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil Jusop, Shamshuddin Mohd Sufian Kang, Enio Kang Ishak, Che Fauziah Panhwar, Qurban Ali Much of the present coastal plains in the Malay Peninsula were inundated by seawater some 6,000 years ago. That was the time when pyrite is believed to have been mineralized in the sediments of the seawater. This paper attempts to explain the process of pyrite mineralization in the coastal sediments during the Holocene as well as to show how pyrite oxidation affects plants and aquatic life in their vicinity. At that point in time, the sea level was 3-5 meters above the present level. Under reduced conditions, Fe3+ ions existing in the sediments were reduced to Fe2+ ions, while SO42- anions from seawater were reduced to S2- ions. These reactions were promoted by microorganisms feeding on the organic matter provided by native vegetation. Finally, the ferrous and polysulfide ions reacted to form pyrite (FeS2). Over the years, this pyrite accumulated in the sediments, occurring at varying depths. In some sediment of the coastal plains of the Malay Peninsula, there are considerable amounts of pyrite; however, they are environment-friendly. When the areas are developed for agriculture or otherwise, this pyrite is exposed to atmospheric conditions, resulting in its oxidation which in turn leads to acidity and the formation of yellowish jarosite [KFe3(SO4)2(OH)6]. Toxic amounts of Al and Fe are usually present in the soils and water in the area, affecting crop growth and aquatic life. Malaysian Society of Soil Science 2013 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/29409/1/On%20the%20pyritization%20of%20the%20coastal%20sediments%20in%20the%20Malay%20Peninsula%20during%20the%20Holocene%20and%20its%20effects%20on%20soil.pdf Jusop, Shamshuddin and Mohd Sufian Kang, Enio Kang and Ishak, Che Fauziah and Panhwar, Qurban Ali (2013) On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil. Malaysian Journal of Soil Science, 17. pp. 1-15. ISSN 1394-7990 http://www.msss.com.my/mjss/abs17.html |
| spellingShingle | Jusop, Shamshuddin Mohd Sufian Kang, Enio Kang Ishak, Che Fauziah Panhwar, Qurban Ali On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil |
| title | On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil |
| title_full | On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil |
| title_fullStr | On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil |
| title_full_unstemmed | On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil |
| title_short | On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil |
| title_sort | on the pyritization of the coastal sediments in the malay peninsula during the holocene and its effects on soil |
| url | http://psasir.upm.edu.my/id/eprint/29409/1/On%20the%20pyritization%20of%20the%20coastal%20sediments%20in%20the%20Malay%20Peninsula%20during%20the%20Holocene%20and%20its%20effects%20on%20soil.pdf |
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